DYNACO ST-70 6GH8A / 6GH8 PC-3 DRIVER BOARD PCBThis is Dynaco ST-70 driver board PC-3. It’s developed and designed to be drop in replacement and it follows original wire hole layout, but it’s modified to use widely available and better sounding 6GH8 / 6GH8A / 6KD8 / ECF82 tubes instead of obsolete and hard to find 7199 tubes. You can find many quality NOS tubes of any of these types for normal prices and you can enjoy tube rolling with this driver board. It’s also modified to accept modern and NOS coupling capacitors of various types and dimensions.It’s made of hi quality epoxy fiberglass FR4 material 1.6mm (0.062’) thickness, it’s double sided with solder rings on top layer. Solder reflow process is done on both layers and also inside every hole and blue solder mask is applied on both sides. All connections and elements on the board are silkscreened with original DYNACO numbering, so you can use original DYNACO ST-70 manual to complete it. DYNACO ST-70 Stereo 70 ST70 – 6GH8A 6GH8 PC-3A DRIVER BOARD PCB I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts.If you buy any item on ebay from me and for if you are not fully satisfied for any reason or have any complains, please send me message before leaving negative or neutral feedback or opening a case. I really do care about your satisfaction and I’ll do my best to solve any kind of problem.I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message.
Item Tag: ST-70
Dynaco Dynakit ST-70 Stereo Tube Amplifier
New main multi section cap. Selenium rectifier replaced with high speed diode. All products are fully tested. Faulty or under-spec components are replaced with modern high grade equivalents. Looks, sounds & performs beautifully.
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Dynakit ST-70 Stereo Tube Amplifier – New Mullard Tubes & PCB Tested/Working
This refurbished version includes new tubes and a new printed circuit board, ensuring high-quality sound output.
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Dynaco ST-70 Stereo Tube Amplifier Completely Restored With Upgrades!
Dynaco ST-70 tube amplifier with upgrades! Chassis is original Dynaco steel. All new tube sockets. It includes the bottom cover with new rubber feet and a cage. I can send them to you. They are both in nice condition and the cage is clean with the original brown paint.
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Dynaco ST-70 Tube Power Amplifier
Very nice amp , was redone on inside a few years ago
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Dynaco Dynakit ST-70 Tube Amplifier PARTIAL Restoration Kit repair service
Please note we also offer a FULL kit with INSTRUCTIONS ———–> LINKOr search for item (eBay item number:165635774974)The scarcity of good, honest techs who can do good and reasonably priced restoration/rebuild of audio equipment inspired me to create this restoration kit. In today’s day and age, it is difficult to find a knowledgeable technician who can service your audio gear properly. I have seen many poor quality restorations of equipment that cost way too much for their owners. In 99% of the cases, only a few parts were replaced, instead of a full and proper restoration job.A proper restoration must replace all electrolytic, paper, film, oil capacitors. Do not fall for partial kits. This is not a good or proper way to restore your audio equipment. It is the same as with car tires; one should never replace just one tire and keep the other worn-out tires on. A proper rebuild requires a full recap of all oil, paper, lytic capacitors.On the other hand, if one succeeds in finding a good tech, the wait time is usually 6-12 months for the unit to be serviced, and costs are sky-high. I have been servicing audio equipment for many years and have developed deep respect for all good equipment. Knowing how amazing and warm these units can sound, I decided to put together this kit. It includes very good upgrades and improvements that must be done to the unit. This restoration kit will make a huge difference in the sound quality. All the parts are of high-quality Japanese Nichicon / Rubycon / IC / United Chemi capacitors.I am extremely particular about the quality of the parts provided in this kit. Knowing how many bogus/fake caps, diodes, resistors, etc. are out there, I source all the parts from reputable wholesalers and buy them in bulk. Vintage audio equipment has the potential to deliver rich and authentic sound when it is properly restored. Not only can it enhance your listening experience, but it can also evoke memories and bring joy to your life. Let’s work together to bring your vintage gear back to its full potential, and make sure you have the music you deserve. ♩♬♫♪♫♩♬ “They Shall Have Music”- Avery FisherIncluded in this kit: 1. Power/Filter stage capacitors (Nichicon / Panasonic / United Chemi) electrolytic capacitors. Note, the image with silver multicap cans shown restaffed with new caps is for illustration purpose only. 2. Complete audio path upgrade with high quality US made (IC) or Panasonic audio grade film capacitors. FULL kit with INSTRUCTIONS ———–> LINK We also offer a great selection of Restoration Kits, LED conversion kits, Volume Controls, Rotary Switches and other rare/unique parts;Make sure to check our store ———> LINK (Use the search bar inside the shop to find what you need faster)We may also be interested in purchasing your equipment
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Dynaco ST-70 amp by Audio Van Alstine (AVA) Super 70i, Perfect Working Condition
The Audio by Van Alstine (AVA) Super 70i, a classic modification of the Dynaco Stereo 70, provides a warm, engaging tube sound with improved definition over the stock unit. While offering a lush midrange and good soundstage, This amplifier playing perfectly and sounding silky smooth, no humming or buzzing noise at all, Comes with (4) matching Mullard EL-34 Russian Tube, (1) RAYTHEON 5U4GB Rectifier tube and (2) driver tube made in china. Thanks for watching
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Dynaco Dynakit ST-70 Tube Amplifier Restoration Kit repair service fix
We may also be interested in purchasing your equipment. .. This listing is for 1 x FULL kit . Up for sale is Dynaco ST-70 restoration kit. This kit includes FULL restoration kit. ———- The scarcity of good, honest techs who can do a good and reasonably priced restoration/rebuild of audio equipment (especially tube gear) made me start offering this restoration kit.In today’s day and age it is very hard to come by a knowledgeable tech who can service your audio gear well. I have seen many poor quality restoration of equipment that cost way too much to its owners.In 99% of the cases there were only few parts replaced, instead of a full and proper restoration job. On the other hand, if one succeeded in finding a good tech, a wait time is usually 6-12 months for the unit to be serviced. In this kit I offer parts and instructions for a full/complete restoration of your audio equipment. I have been servicing audio equipment for many years and have developed deep respect toward all good equipment, especially tube gear. I really do think they sound amazing if properly restored. I have seen many bad quality restorations/fix jobs done to these units that made them sound cheap and very low quality. Knowing how amazing and warm these units can sound, I have decided to develop this kit to help you do a great job on your equipment. It includes very good upgrades and improvements that MUST be done to the unit. Please do your audio equipment a favor and replace the most important components that are most likely 90% dead. Power / Filter stage caps are those large silver cans mounted on top of the chassis and sometimes underneath. This restoration pack will make a huge difference in the sound quality. All the parts are of high quality Japanese Nichicon / Panasonic / IC / United Chemi capacitors. I provide several instructions on how to mount those new electrolytic caps. The best one is to rebuild those original cans. You will receive a step-by-step instructions and all the proper caps needed for that. This technique will keep the original look of the unit. I am extremely particular about the quality of the parts provided with this kit. Knowing how many bogus/fake caps, diodes, resistors etc. out there, I source all the parts from reputable whole-sellers and buy them in bulk. The knowledge that I am going to share with you have been acquired by me over many years serving audio equipment. Please be patient and let’s get your little birdy sing again. “They Shall Have Music” Avery FisherIncluded in this kit: 1. Power/Filter stage upgrade with authentic Nichicon / Panasonic / IC / United Chemi electrolytic capacitors. 2. Detailed instruction with colorful images, schematics, manuals (all of these are in electronic form, I consider these much better than printed version due to zoom availability). 3. Schematics 4. Complete audio path upgrade with high quality US made (IC) or Panasonic audio grade film capacitors. 5. Parts for compete recap of all the electrolytic capacitors. 6. Complete recap of all lytic, paper, film, oil caps. 7. Diodes. 8. Inrush thermistor (to limit the initial current inflow). 9. Bridge rectifier. 10. Transistors (PNP, NPN).. 11.Transistors (PNP, NPN). 12. 1 x main fuse 13. Instructions on how to clean the chassis and the glass. 14. Instructions on how to clean a faceplate 15. Instructions on how to polish knob covers. 16. Support/help to a reasonable extend in case you need it. (This is what makes us different from other sellers.)——–Also available NEW production volume control ———–> LINK We may also be interested in purchasing your equipment… Please note a proper restoration must replace all electrolytic caps on all boards. DO not fall for partial kits that restore just one board ( power supply, power amp etc). Not only they supply inferior quality caps, but also trying to sell you a very bad idea of doing a partial recap. This is not a good/proper way to restore your audio equipment. A proper rebuild requires a full recap of all the PCBs. requires a full recap of all the PCBs.