Dynaco is the very soul of high fidelity audio. The only things reused in this build is the chassis, cage, transformer, jacks, switches,and heat sinks. Power Transformer Index : 120 V, 208 V, 347 V or 600 V Pri. Found 200 records in Search of Dynaco-Doctor Forum. This tube is a drop-in replacement for KT88s no special re-wiring required! The KT120 is rated to have a plate dissipation of 60W compared with the 35W of the 6550, the 42W of the KT88, that's a lot of juice!. Archived from groups: rec. Read honest and unbiased product reviews from our users. He is asking $750, which is alittle more than the ones I found on eBay selling for $650. They have been fully tested and there are no opens or shorts and both are producing 70. Most power amps have input capacitors to block any DC from the preamp. That makes the transformer less efficient and run hotter. DIY and Hi-Fi Audio Schematics. The output transformer from one manual identifies the transformer "Z-216" and the other manual has "A-431" Does anyone know what the difference is? DynakitParts lists the transformer as A-431. pdf; Dynaco Stereo 35. David Hafler released the Dynaco ST-35 two-channel power tube amplifier nearly 50 years ago as a lower cost alternative to the popular ST-70. If it's the power transformer, you will need to. In the stock arrangement. audioXpress May 2017 is a very strong edition for all tube and audio electronics aficionados in general. Find Dynaco In Stock Now. 00: BC : Jun 07, 2019: 38 : FOR SALE: Dynaco Mark III / Mk III Mono Block Amplifier: Tube Amplifiers: USD $1350. The VTA ST-120 is a 60 WATT PER CHANNEL amplifier built on the same ST-70 stainless steel chassis as the amp pictured above. I built my first kit when I was in the 7th grade. Thanks for looking. Headphones were, at the time (early 1960s), not that common. pdf; Epicure Power Amplifier. I own a Dynaco ST-120 that I had upgraded by Van Alstine here in Minnesota. Not all transformers are shape-changing giant robots; most are simple electronic components that help your world run smoothly. Here at Dynakit™ you will find the right parts to restore, repair or upgrade your original Dynaco™ vacuum tube amplifier. I’ve built many complex electronic kits over my lifetime, and although it’s been many years since I’ve built anything, I still have the necessary soldering skills and tools to do so. Transformers; Troubleshooting and Triode Connecting. Dahl series of custom transformers & chokes to our. Vintage Dynaco St-120 Power Amplifier tested- Working order ( have extras ) Box and Original owners manual+ transistors for power amp (never needed to replace ) Dynaco Stereo 120 power amplifier. Dynaco is the very soul of high fidelity audio. The chassis and power transformer, heatsinks, speaker outputs and power switch/cord are original parts, everything else is new and upgraded to give this vintage amp a better sound and improved reliability. Dynaco 400 Assimilation The Dynaco 400 was the Tyranasaurus Rex of power amps in 1973. It was introduced in 1959 and was sold until mid-1990. One of the best custom builds of one our VTA amps I have seen. Mods:Acme silver plated IEC receptacleNeotech Legenburg cryo'd up-occ internal wiringCardas internal wiring where the rectangular Neotech too difficult to work. After an absence of several years, Pacific Audio Regenesis has re-emerged on the vacuum tube audio scene. Had a pair of Tube monoblocks come up for sale on CL here. Voltage selector PCB for transformers like the Hammond 300-series with multi-voltage primaries. Usually power transformer arcing will make noise equally in both channels. Output transformer of the larger ST-120. I had one to compare to, the box stock 120 WAS better in highs and low extension. The only things reused in this build is the chassis, cage, transformer, jacks, switches,and heat sinks. Heath stacked 4 insulated cans caps on the chassis. 150) Please excuse my ignorance but a little while ago, I got an ST-150 off E-bay to replace one of my ST-120's. After many years designing single ended amplifiers I have decided to start a series of test about the Push Pull amplifiers. The information is based on many years of experience in construction and measuring of tube amplifiers, development of modules for tube stage control & quality output transformers. Many audiophiles of certain ages have had first- hand exposure to Dynaco Stereo 70 (ST-70) tube or Stereo 120 (ST-120) solid-state amps. Just out of curiosity, has anyone upgraded the Dynaco Stereo 120 and Pat 4? I also have and use these and would do the updates if it makes sense. A "Sound Card Interface / AC RMS Voltmeter" you can build. It is the best value of all the Dynaco components and can deliver half again as much steady-state power at the audio extremes as many other units adbertised at twice the wattage. The early versions had part number PA 060. Stemming from over 6 decades of innovation, the latest Dynaco amplifiers and preamps deliver music with the dynamics and excitement that is only possible when mixing chemicals inside a glass tube. Transformer-based AC/DC converters. Hard to find parts including Dynakit™ original drop-in replacement components typically ship within 24 hours of ordering. By combining outstanding output transformers with simple but effective circuitry, they deliver audible performance that is comparable to some of today's highly regarded amps and preamps costing much more. com Everything from the transformers which he has custom wound right down to. I expect ~1uH but the (old) capacitors may have some steel in them. 150) Please excuse my ignorance but a little while ago, I got an ST-150 off E-bay to replace one of my ST-120's. Audio Asylum Trader. Its early popularity was due to a reasonable price coupled with good quality iron and a sound seemingly liked by all. 1: Jensen MOS-FET 150 (8. The VTA ST-120 is a 60 WATT PER CHANNEL amplifier built on the same ST-70 stainless steel chassis as the amp pictured above. Primary Inductance: 100 H @ 120 Hz. 2, users manual (zip file) Dynaco SCA-35 stereo integrated amplifier schematic page 1, page 2 Dynaco ST-35 stereo power amplifier schematic; Dynaco Stereo 70 amplifier manual w/schematic; Dynaco Stereo 70 Series II amplifier manual w/schematic. Thanks for looking. These were powerful, 35W per channel stereo amps typically using a pair of 6L6GC, EL34, or similar power tubes. 2% similar) I always combine shipping. This goal Was achieved by building into the transformers a large gin Of performance capabilities, over that normally expected in an output transformer. Find great deals on eBay for dynaco stereo 35 and dynaco st-35. Dynaco Transformer 454353 Z353 Rare Free Ship. Back to Dynaco Upgrades Page [Tube Data Page ][Tube & Tube Amp Links Page ][Dynaco Upgrades] [Dusty Files Part 1 Part 2][Other Triode Pages][Schematic Index][Studio Schematics][Frequently Asked Questions][How To Find Us] Dynaco Stuff: Upgrade PC Boards for Mk2, Mk3, ST70. A nice pair of Dyna ST70 output transformers with cloth leads covered with shrink tubing for safety. Heath stacked 4 insulated cans caps on the chassis. You can make a Dynaco Stereo 120 sound great, and the only. Dynaco A-25 - $299. Like the original Dynaco (tm) units, they're the best bang for the buck available in output transformers. Dynaco had two types of PA 060 power transformers they used. I want to use the Dynaco to drive a 120 volt power circuit at variable frequencies up to about 3 kHz using a output transformer scheme I used with Sansui for last year. Retailing for $99. It doesn't have a conventional power transformer, instead, I am using two 12. I built this from a kit along with a Dynaco Stereo 120 power amp. Just out of curiosity, has anyone upgraded the Dynaco Stereo 120 and Pat 4? I also have and use these and would do the updates if it makes sense. 250 aluminum plate that was machine jeweled before the components were mounted. Not to say the 120 was exceptional, just that the st70 wasn't either :-) Stereophile review was accurate on this. The advantage of this choice is that original Dynaco accessories (such as the tube cage) can still be purchased and will fit. The output transformers have what you'd expect out of a Dynaco transformer, like healthy low frequency inductance , high resistance to distortion caused by output tube DC current imbalance, and low overall distortion. Trim to length and connect the four Left output transformer leads (Yellow, Orange, Brown, Black) to the Left speaker output terminals as shown in figure 1. Dynaco ST-70 Series 3 Amplifier. 99 in kit form ($129. 6 VAC > 240 VAC transformer for the plate voltage. Dynaco Stereo 120 PART - PAIR POWER TRANSFORMERS. Dynaco Stereo 400 Super Amp Review,1975,6 pgs,Full Test. It will also need the power supply modernized if that has not been done already. I have a new stainless chassis, the driver board, all the components for it, tube sockets, etcI'd let it go for the same thing I paid and have receipts. VI mono power amplifier of 1976, which produced 120 watts (continuous). No only has dynaco been defunct since the 70s, but this is an entirely different amp than the original I'd love to hear one of these though. Panor/Dynaco's most ambitious stereo tube amplifier was the Stereo 160, a 75wpc, all-tube stereo power amplifier with switchable pentode/triode modes, adjustable tube bias potentiometers, and 6550 output tubes. Need vacuum tubes? Want to build your own amplifier? Have an unhealthy HiFi obsession? We've got you covered. Well known as the best-selling tube amp of all time, the iconic Dynaco Stereo 70 amplifier has been revamped and redesigned in a Series 3 model in the relaunched Hafler-Dynaco line, now under the auspices of Radial Engineering Ltd. The transformer, rectifier diodes and power supply filtering section are not included. Then there's the well known Counterpoint SA-12/100, long-time favorites of mine, and for good reasons; a 3 for both sound and power, and a 1 in cost (Total 7). Where Z P is the primary winding impedance, Z S is the secondary winding impedance, (N P /N S) is the transformers turns ratio, and (V P /V S) is the transformers voltage ratio. The Dynaco Stereo 80 is an all silicon transistor basic power amplifier for use with separate preamplifiers such as the Dynaco PAT-4 or PAT-5, or for use with tape recorders or tuners such as the FM-5 or AF-6, which have their own volume controls. Dynaco Transformer 454353 Z353 Rare Free Ship. Archived from groups: rec. Dynaco Transformer 454353 Z353 Rare Free Ship. To add confusion to all of this, over the years the power transformer also changed. The output transformers are relatively complex in winding structure, the chassis solid, if undistinguished looking, and the original tubes supplied superb (Mullard EL-34s for much of the 60s), all for $99 as a kit! A used Dynaco Stereo-70 was my first tube power amplifier (way back in 1982). com The Dynaco SCA-80Q was an integrated amp that combined a preamp based on the PAT-4 with a power amp based on the Stereo 80. This transformer weighs about 5 pounds more than an original PA-060 power transformer. It's the baby brother of the Dynaco ST70 and tends to be overlooked by many vintage amplifier aficionados. I am offering for sale a pair of Power transformers removed from operating equipment. Dynaco St-70 - $750. Toroidal Transformers. pdf; Dynaco Stereo 416. While Panor owns the Dynaco brand name and trademark, there is no longer any direct connection with the company founded by David Hafler. Stemming from over 6 decades of innovation, the latest Dynaco amplifiers and preamps deliver music with the dynamics and excitement that is only possible when mixing chemicals inside a glass tube. 2% similar) I always combine shipping. 1: Jensen MOS-FET 150 (8. Akitika makes complete stereo preamp and power amp kits. The heart of the Stereo 35 is the special Dynaco Z-565 output transformer, a patented design tailored specifically to this circuit. The curse is that the clunky slide-switches and obsolete parts (the stereo/mono switch, for example) are ALSO preserved. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. The SCA-35 is a one piece combined pre and power amplifier. Dynaco Transformer 454353 Z353 Rare Free Ship. Dynaco 400 Assimilation The Dynaco 400 was the Tyranasaurus Rex of power amps in 1973. The output transformers have what you'd expect out of a Dynaco transformer, like healthy low frequency inductance , high resistance to distortion caused by output tube DC current imbalance, and low overall distortion. Dynaco ST 120 Very Special Unit-This is about as far as you can get from a stock stereo 120. A Customized Dynaco ST35 Kit The ST35, also known as the Stereo 35, was released by Dynaco in 1963. pdf; Lecson API Power Amplifier. 408 T0668 IJIYI\faCD iNc. Class D Replacement for Dynaco ST-120 ?? Results 1 to 7 of 7 Dayton Audio DTA-120 Class T Digital Mini Amplifier 60 WPC I have looked at all the suggestions in your two posts and have decided I would try removing all the boards and transformer from the Dynaco 120 case and replace them. These amps smoked the Dynaco from the beginning of the bandwith to the last and final note. The company was incorporated in October 1955, with business premises located at 617 N. The SCA-35 originally did not include a headphone jack. This module has been designed to maintain a constant bias voltage through all power output tubes for your ST70 or ST120 stereo power amp. Largely thanks to those massive Sangamo caps and overly sized power transformer. INTRODUCTION. com replaces the old incandescent lamp in your PAS preamp and SCA-35 Amp. Where Z P is the primary winding impedance, Z S is the secondary winding impedance, (N P /N S) is the transformers turns ratio, and (V P /V S) is the transformers voltage ratio. The Dynaco (or Dynakit) Stereo 70 (also known as the ST-70) vacuum tube amplifier was one of the most popular tube amps of its time. Find helpful customer reviews and review ratings for SainSmart Assembled 6N3 HiFi Buffer Audio Tube Headphone Amplifier Pre-amp Kit with Transformer at Amazon. At some point, the Dynaco Quadaptor function was built in, and the result was the SCA-80Q. And since the four output transformers are in parallel, the winding ratio remains constant, so the same 4300 ohms is reflected with the 8-ohm load. Akitika makes complete stereo preamp and power amp kits. Features1) Input selector for phono, tape head and three high level sources2) Exclusive…. You can make a Dynaco Stereo 120 sound great, and the only. Continuing my quest for quality music, I ordered a Dynaco VTA ST-120 tube amplifier kit from Bob Latino at www. All new wiring and all 3 PCB boards and every capacitor are brand new specially designed upgrades made just for the Dynaco Stereo 120. Dynaco Stereo 120. Its electrical performance is matched only by manufactured amplifiers that cost far more. FOR SALE: Dynaco Stereo 120 Power Amplifier - Modernized Rebuild: Solid State Amplifiers: CAD $500. ST-70 TRANSFORMER SET Includes (2) A-470 output transformers and (1) PA 060 (120) vac power transformer. Dynaco is the very soul of high fidelity audio. sure will jump in. Re: Dynaco ST 120 Upgrade info Daniel at updatemydynaco supplied it, as I wrote, he was very helpful. Trim to length and connect the four Left output transformer leads (Yellow, Orange, Brown, Black) to the Left speaker output terminals as shown in figure 1. Slug turns easily with proper nylon hex tool. In 1968, that was the good life!. VI mono power amplifier of 1976, which produced 120 watts (continuous). SUPER FIDELITY • OUTPUT TRANSFORMERS The new line of DYNACO output transformers incorporates the first basic advance in output transformer design since the introduction of interleaved windings. Where Z P is the primary winding impedance, Z S is the secondary winding impedance, (N P /N S) is the transformers turns ratio, and (V P /V S) is the transformers voltage ratio. 25% of websites need less resources to load. The top plate is made of aluminum and is 4 mm thick. This is a design by Dan Joffe of Updateyourdynaco. In the stock arrangement. If you have built any of these circuits, we would love to hear from you so send us your comments. The GZ34/5AR4 is. Because of early problems involving circuit, power supply, and transistor failures, the ST 120 was not as popular as earlier Dynaco tube amplifiers. Find helpful customer reviews and review ratings for SainSmart Assembled 6N3 HiFi Buffer Audio Tube Headphone Amplifier Pre-amp Kit with Transformer at Amazon. To add confusion to all of this, over the years the power transformer also changed. These amps smoked the Dynaco from the beginning of the bandwith to the last and final note. 8K Push-Pull with 25% Ultra Linerar Taps to 8 & 16 ohms 17. A Dynaco Stereo 120 after years of service. I think he charged me around $35 for it. Continuing my quest for quality music, I ordered a Dynaco VTA ST-120 tube amplifier kit from Bob Latino at www. slowly turn the dial towards 120; if using the dim-bulb tester, follow the instructions on the page. 95: PA211 Power Transformer Dyna PAS for Dynaco Replacement MADE IN USA $89. 250 aluminum plate that was machine jeweled before the components were mounted. Vintage, Assorted DYNACO Parts and Components for models: PAS-3, PAT-4, and Stereo 120A Amplifiers / Pre-amplifiers: Chassis, Covers, Chokes, Tubes, Caps, Transformer, Terminals, Switches, Pots, and much more! Many difficult to source items. New Controll Transformer Bk-10kva 10kw Single Input And Output Customised Made. The new USA made power transformer has a higher stack lamination than the original Dynaco power transformer and is rated for 120 volts instead of 115 like the old design. Output Transformer Ndb 280w 1. Wanted – HH Scott We are Buying HH Scott audio equipment The older the better, I have a soft-spot for HH Scott, because my first high end power amp was an HH Scott LK-150 power amp which I have to this day. Dynaco Transformer Catalog • LICENSED UNDER U. • Philadelphia. The GZ34/5AR4 is. In 1998, I spotted a Dynaco 400 in a used equipment shop, paid. Dynaco Stereo Preamp Schematic. It got a bit warm around the heat sinks, but not so warm that I couldn't keep my fingers on it. Dynaco 400 Assimilation The Dynaco 400 was the Tyranasaurus Rex of power amps in 1973. You can make a Dynaco Stereo 120 sound great, and the only. Dynaco sold more than 300,000 Stereo 70 power amplifiers over the life of that product. Dynaco Pas 3 Sale. Do the cap mods first, it will totally change the sound of the amp for little or nothing. Dynaco is also well known for its line of transistor components. "I took the new "Dynaco-Akitika Stereo 120" for a "road test" yesterday - played Saint-Saens Organ Symphony (CD) at about max listening volume for about 40 minutes - the house shook, wall hangings were vibrating, but the amp didn't even work hard. This is a design by Dan Joffe of Updateyourdynaco. Channel A&B sounded very nice, and had no noticeable problems. PP balanced the magnetic field and allowed ungapped output transformers, with their much greater efficiency and lower losses. Dynaco ST 120 Very Special Unit-This is about as far as you can get from a stock stereo 120. Mods:Acme silver plated IEC receptacleNeotech Legenburg cryo'd up-occ internal wiringCardas internal wiring where the rectangular Neotech too difficult to work. Re: Dynaco ST 120 Upgrade info Daniel at updatemydynaco supplied it, as I wrote, he was very helpful. The 2 ampere slo-blo fuse supplied for standard 120 volt wiring or for the 100 volt option should be replaced with a 1 ampere slo-blo fuse when the amplifier is wired for 220 or 240 volt AC lines. The Dynaco (or Dynakit) Stereo 70 (also known as the ST-70) vacuum tube amplifier was one of the most popular tube amps of its time. Focusing on Output Transformer in stock online. The SCA-35 originally did not include a headphone jack. The board is designed to mount to two of the transformer's mounting screws. It had a sticker on the front which says "MOS-FET 150" by Jensen's Stereo Shop, 2202 River H. Dynaco part number one used if transformer for fm-3 tuner(posted on March 7th, 2019). In later years, the company began to produce a line of solid-state audio components, commencing in 1966 with the introduction of the Stereo 120 power amplifier (60 wpc). Any questions, please ask. This video describes the installation of the complete rebuild kit into a Dynaco Stereo 120 power amplifier. 99 in kit form ($129. Audio Asylum Trader. Scan of the Dynaco Dynakit Stereo 70 (ST70) Tube Amplifier Schematic from the instructions manual. Will Vincent Dynaco ST 70 look on Audiokarma as there had been a couple of the VTA ST-120's for sale on there. 6 VAC > 240 VAC transformer for the plate voltage. The ST-120 kit now comes standard with a 16 gauge heavy duty stainless steel chassis to better support the three transformers. Dynaco Stereo 120. 9k Pp Ct Modern Design And Build By Redradia For Sale Online. 408 T0668 IJIYI\faCD iNc. Dynaco Transformer 454353 Z353 Rare Free Ship. Bob Latino Dynaco ST-120 for sale. The new USA made power transformer has a higher stack lamination than the original Dynaco power transformer and is rated for 120 volts instead of 115 like the old design. ST-35 Output Transformer Z565. They both use EL34's as outputs and a single dual pentode/triode as the input and phase inverter. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. The early versions had part number PA 060. Below you will found our manuals on the Dynaco The Dynaco Stereo 120 is an all silicon transistor basic power amplifier. Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: [email protected] Well known as the best-selling tube amp of all time, the iconic Dynaco Stereo 70 amplifier has been revamped and redesigned in a Series 3 model in the relaunched Hafler-Dynaco line, now under the auspices of Radial Engineering Ltd. Channel A&B sounded very nice, and had no noticeable problems. A Customized Dynaco ST35 Kit The ST35, also known as the Stereo 35, was released by Dynaco in 1963. My uncle had the Stereo 120, PAT-4 Preamp, FM-3 tuner, and A-25 Loudspeakers. Dynakit St-70 Schematic Introduced in 1959, the ST 70 was available as a kit (Dynakit) intended for I have also located transformer or output. The SCA-80Q is designed for use with either 50 Hz or 60 Hz current. ST-70 TRANSFORMER SET Includes (2) A-470 output transformers and (1) PA 060 (120) vac power transformer. I am often asked how upgrading an amplifier’s transformers will improve tone. It will also need the power supply modernized if that has not been done already. Using the original ST-120 stainless chassis as a template, the top was hand-cut using a drill and a Dremel tool. For sale is a fully restored Dynaco ST-70 stereo tube power amp. com main page is 151. The Heathkits have solid state rectification where the Dynaco is tube rectified. The most common and inexpensive plugpack power supply type you'll see is the chunky transformer based plug. As to SETs, they were obsolete by the 1920s when Push-Pull configurations were developed as a way of avoiding the horrendous distortion caused by single-ended DC through the output transformer. There wasn't anything wrong with the 80, but I wanted the increased power and the sound improvements that the 120 upgrades would provide in the studio. Stereo Amplifiers, Pre-amps and Integrated amps: Vintage stereo control power amp / preamps & amplifiers, integrated amplifier / amp for sale that have been completely serviced / refurbished / restored with a warranty; by B&K AV2500 5-channel power amp, Dynaco, Fisher Studio Standard CA, Hafler, Kenwood Basic C, KA KC, KM, NHT SA-3 subwoofer power amp, Onkyo A, Pioneer SA, SAE Mark, Sansui AU. Hard to find parts including Dynakit™ original drop-in replacement components typically ship within 24 hours of ordering. For sale is a fully restored Dynaco ST-70 stereo tube power amp. The early Dynaco 70 that has transformers similar. Dynaco Transformers brochure. Power Transformer Index : 120 V, 208 V, 347 V or 600 V Pri. FOR SALE: Dynaco Stereo 120 Power Amplifier - Modernized Rebuild: Solid State Amplifiers: CAD $500. 2, users manual (zip file) Dynaco SCA-35 stereo integrated amplifier schematic page 1, page 2 Dynaco ST-35 stereo power amplifier schematic; Dynaco Stereo 70 amplifier manual w/schematic; Dynaco Stereo 70 Series II amplifier manual w/schematic. 3060 Jefferson St. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Heavier construction, runs cooler, gives better regulation, won't buzz & hum like some originals do. The Dynaco (or Dynakit) Stereo 70 (also known as the ST-70) vacuum tube amplifier was one of the most popular tube amps of its time. 1: Direct drop in. updatemydynaco. com Everything from the transformers which he has custom wound right down to. Not all transformers are shape-changing giant robots; most are simple electronic components that help your world run smoothly. The eBay vendor had taken care with the packing, but it was clear this amp had seen better days. Vintage Dynaco St-120 Power Amplifier tested- Working order ( have extras ) Box and Original owners manual+ transistors for power amp (never needed to replace ) Dynaco Stereo 120 power amplifier. You would need to buy transformers, tubes, wires, and a few hardware odds/ends. Dynaco St-70 - $750. The kit seems well thought out and seems to be a bargain to me. Below you will found our manuals on the Dynaco The Dynaco Stereo 120 is an all silicon transistor basic power amplifier. After an absence of several years, Pacific Audio Regenesis has re-emerged on the vacuum tube audio scene. DYNACO 120 A STEREO POWER AMPLIFIER SOLD (Click on above thumbnails to enlarge photos) warranty DYNACO PAT-4 STEREO PRE-AMPLIFIER MADE IN THE USA! Preamp amp Circa 19 67-73 SOLD 9/20/08 NEW LISTING 4/25/16 (Click on above thumbnails to enlarge photos) warranty VINTAGE DYNACO PRE-AMP DYNACO PAT-4 STEREO PRE-AMPLIFIER #5899 MADE IN THE USA. The GT-102 Audio Power Amplifier kit delivers more than 50 Watts per channel and boasts an amazing 136 dB signal to noise ratio. Here is some info from the unofficial Dynaco site. It came with the original warranty card, owners manual, schematic and sales M5G DV 10X5 * Cambridge Audio 840c. I built up a Williamson 40-40 stereo power amplifier (from a 70's issue of Audio Amateur) in the carcass to use at work. I built this from a kit along with a Dynaco Stereo 120 power amp. [citation needed] Throughout the original Sunn Amplifier line they employed Dynaco designed and built transformers (up to the 120 watt MK VI transformer set) and Hafler based power amp designs until Sunn stopped producing the original line of tube amplifiers in favor or the solid-state Concert and Coliseum models. ; All fire: EI105 power transformer, EI86(Z11) output transformer, EI48 filter inductor and all large filter electrolytic capacitor; High quality gold-plated RCA lotus socket and horn socket; All-mirror stainless steel body, front. In addition to the upgraded chassis, the ST-120 also sports larger transformers than the original Dynaco amps, allowing for higher power output. pdf; Lecson Power Amplifier - 1974. The output transformers are the same ultralinear design. 18 watching. Dynaco 400 Assimilation The Dynaco 400 was the Tyranasaurus Rex of power amps in 1973. • Philadelphia. See my 'Nostalgia as selective memory' views :-). I gave this amp a 30min bench test. The most common and inexpensive plugpack power supply type you'll see is the chunky transformer based plug. 3060 Jefferson St. I will dare to say it: the BIA 120 is the missing link, that wondrous piece of mythical tube gear that bridges tube and solid state amplification! It has the best sonic qualities of both types of circuitry, with none of the flaws of either. But they are relatively "infamous" for melting down a channel without warning. ST-70 TRANSFORMER SET Includes (2) A-470 output transformers and (1) PA 060 (120) vac power transformer. It was a Knight-Kit Ocean Hopper receiver followed by an EMC 107A VTVM, Heathkit OM-3 oscilloscope, Precise 630 Signal Generator, Heathkit AA-32 amplifier, Dynaco Stereo 120 power amplifier and a PAT4A preamplifier. Hafler DH-101 - Click here. Toroidal Transformers. The output transformers have what you'd expect out of a Dynaco transformer, like healthy low frequency inductance , high resistance to distortion caused by output tube DC current imbalance, and low overall distortion. The PA 060 transformer used in the very early kits had a very low 'stack' about 1 " /25. Other highly regarded tube products included the PAS-2 and the PAS-3X stereo preamps, and the FM-3 tuner. Find helpful customer reviews and review ratings for SainSmart Assembled 6N3 HiFi Buffer Audio Tube Headphone Amplifier Pre-amp Kit with Transformer at Amazon. Later versions, especially with the black cage had a fancy "Dynaco" logo on the chassis and cage. Dynaco; Philadelphia PA, build 1960, 8 pictures, 2 schematics, 4 tubes, United States of America , semiconductors, Audio. The Tape Monitor switch is used to check recording from the tape input. Dynaco screwed up large designed around a dead valve, they obviously had no concern about future maintenance. Toroidal Transformers. Exact drop-in replacement for Dynakit ST-70 amplifier. Dynaco MK III Tube Monoblock amps. 2% similar) I always combine shipping. I was never a fan of the original stereo 70 as anything other than a platform for building a new amp on. For sale is a fully restored Dynaco ST-70 stereo tube power amp. Dynaco ST-70 Series 3 Amplifier. The original ST-70 came from the factory with Mullard EL34 (they were actually labeled Dynaco). This was Dyna’s first transistor amplifier, introduced in 1966 and sold for more than 10 years. Using the original ST-120 stainless chassis as a template, the top was hand-cut using a drill and a Dremel tool. A Dynaco Stereo 120 after years of service. Dynaco ST-70 Quad-Cap Upgrade Assembly, Installation & Setup Manual Page 4 CAE Dynaco QUAD Cap Replacement Module PC-S7U R2, 4-04 3. Found 200 records in Search of Dynaco-Doctor Forum. These were powerful, 35W per channel stereo amps typically using a pair of 6L6GC, EL34, or similar power tubes. It came with the original warranty card, owners manual, schematic and sales M5G DV 10X5 * Cambridge Audio 840c. This classic power amp is in great all original cosmetic condition! After the restoration, the sound is punchy on the low end and clear and incredibly detailed in the highs. I was never a fan of the original stereo 70 as anything other than a platform for building a new amp on. P782 EXP 240V Export Power Transformer for Dynaco MkII & MkIII Sunn MADE IN USA $179. Slug turns easily with proper nylon hex tool. The VTA ST-120 is a 60 WATT PER CHANNEL amplifier built on the same ST-70 stainless steel chassis as the amp pictured above. They were removed from two Dynaco Stereo 120 amplifiers that I used the chassis only to do a rebuild using a Toroid power transformer and all new electronics. Stereo Amplifiers, Pre-amps and Integrated amps: Vintage stereo control power amp / preamps & amplifiers, integrated amplifier / amp for sale that have been completely serviced / refurbished / restored with a warranty; by B&K AV2500 5-channel power amp, Dynaco, Fisher Studio Standard CA, Hafler, Kenwood Basic C, KA KC, KM, NHT SA-3 subwoofer power amp, Onkyo A, Pioneer SA, SAE Mark, Sansui AU. Amplifier British Amorphous 8C Advanced Core Output Transformer HIFI Audio Model No: WVT. The most common and inexpensive plugpack power supply type you'll see is the chunky transformer based plug. The chassis size and shape of the ST-120 is identical to that of the Dynaco Stereo-70 power amplifier. These bigger transformers for the ST-120 have been custom built for Bob to the exact same specifications (material type/interleaving/winding etc) as how the original A-470 transformers were made. The curse is that the clunky slide-switches and obsolete parts (the stereo/mono switch, for example) are ALSO preserved. The company was incorporated in October 1955, with business premises located at 617 N. It is the best value of all the Dynaco components and can deliver half again as much steady-state power at the audio extremes as many other units adbertised at twice the wattage. Super cool KT88 variant made by New Sensor in Russia. Dynaco Transformer 454353 Z353 Rare Free Ship. I want to use the Dynaco to drive a 120 volt power circuit at variable frequencies up to about 3 kHz using a output transformer scheme I used with Sansui for last year. pdf; Luxman MQ36. Shop with confidence. Dynaco™ replacement parts & vacuum tube audio amplifier kits. The output transformer is half again bigger than the Dynaco. The rest is all new. It was a Knight-Kit Ocean Hopper receiver followed by an EMC 107A VTVM, Heathkit OM-3 oscilloscope, Precise 630 Signal Generator, Heathkit AA-32 amplifier, Dynaco Stereo 120 power amplifier and a PAT4A preamplifier. Thousands of Dynaco PAS preamps and Stereo 70 & Mark-3 power amplifiers were manufactured during the 1950's thru the 1970's. A Dynaco Stereo 120 after years of service. Back to Dynaco Upgrades Page [Tube Data Page ][Tube & Tube Amp Links Page ][Dynaco Upgrades] [Dusty Files Part 1 Part 2][Other Triode Pages][Schematic Index][Studio Schematics][Frequently Asked Questions][How To Find Us] Dynaco Stuff: Upgrade PC Boards for Mk2, Mk3, ST70. Not all transformers are shape-changing giant robots; most are simple electronic components that help your world run smoothly. Pulled from a working amp for a project that never got started,tested and as good as the day they were made. All new wiring and all 3 PCB boards and every capacitor are brand new specially designed upgrades made just for the Dynaco Stereo 120. 2 Pp 100w Tube Output Transformer Kt88 El34 Kt 88. Heavier construction, runs cooler, gives better regulation, won't buzz & hum like some originals do.