Vintage Tube Amp

Dynaco A-470 ST-70 Vintage Output Transformers Pair for Tube Amplifier.

Vintage Eico ST-70 Stereo Integrated Tube Amp Amplifier, For Parts Or Repair.

THIS WAS FOUND AT AN ESTATE AND HAS NOT BEEN USED FOR YEARS. THE FEW TUBES I TOOK OUT WERE ORIGINAL EICO. ONE OF THE METAL TUBE COVERS DOES NOT SEEM TO FIT ON THE TUBE RIGHT BUT WILL BE INCLUDED WITH THE AMPLIFIER. IT IS AS SHOWN. PLEASE LOOK AT ALL PHOTOS AND ASK ANY QUESTIONS YOU MAY HAVE. REMEMBER THAT I SELL MOSTLY ANTIQUE AND VINTAGE ITEMS AND THAT THEY ARE MOSTLY LIKELY NOT BE PERFECT DO TO THE NATURE OF THEIR AGE. IF YOU HAVE A PROBLEM PLEASE CONTACT ME BEFORE LEAVING FEEDBACK.

DYNACO STEREO70 vacuum tube power amplifier. Can be used with 100V, but sound quality will be inferior. We recommend using 117V. Size: Width 330mm x Depth 240mm x Height 165mm. We accept return items up to 60 days after the item has arrived. International Buyers – Please Note.

As always, these amps are wonderful but too bad I’m limited in space so I can’t keep all the gear I find! See photos for physical condition of the outside and inside of the amp. FYI, the mono switch is noisy if engaged, and the power switch can cause a small pop if not flipped quickly. They both will eventually need to be replaced but I don’t have the time. Restoration included: HIGH quality F&T electrolytic caps; new coupling caps for the driver board; replaced the selenium rectifier with a diode, and added diodes prior to the rectifier tube for added power supply stability. Swapped out the 7199s with a pair of 6UA8s from Tube Depot back in June. Probably have 10 hours on them. Tubes are not guaranteed as I don’t have a tube tester. Tubes included are 4 mixed EL-34s, and 2 6UA8s, Tung Sol GZ34. Here’s video of the actual unit in my system. Photos demonstrate the physical condition. I’m in Palm Springs, CA 92262.

Vintage Dynaco Dynakit Stereo 70 ST-70 Amplifier Tube Amp & Cage – Mullard Tubes. Fully tested and 100% functional; this amp will provide that nice warm tube sound to your home stereo system. Tubes are all excellent. The tube complement is all Mullard – 4 x EL34, 2 x ECF82 and 1 x GZ34. The speaker posts were upgraded by the original owner to banana jacks (the right jacks exhibit some wear but nothing that affects performance). In upgrading the jacks, the 16 ohm output has been disabled. The RCAs look to have also been upgraded. Cosmetically, it is overall very good exhibiting only normal wear from over the years. Includes original cage (one screw for the cage does not match). Also includes a copy of the manual/schematic.

Rectifier Tube replaced with Solid state device hence there is no tube in the socket. New Output tubes- Ruby tubes -2 matched sets. Bias set to 1.56 volts. All caps on board have been replaced (See Picture). New Power supply Multi cap. Replaced parts are shown in the pictures. We are a reputable Stereo Store with 45 years experience. Professionally Serviced, Cleaned and Tested by our Technicians. World Class packaging guaranteed to arrive as shown in the pictures. Lower 48 States only Please.

Vintage Dynaco Dynakit Stereo 70 ST-70 Amplifier Tube Amp & Cage – Mullard Tubes. Fully tested and 100% functional; this classic will add that warm tubey goodness to any home stereo hi-fi set up. Tubes are all excellent. The tube complement is all Mullard – 4 x EL34, 2 x ECF82 and 1 x GZ34. The speaker posts were upgraded by the original owner to banana jacks. In doing so the 16 ohm output has been disabled. The RCAs look to have also been upgraded. Cosmetically, it is overall very good exhibiting only normal wear from over the years. Includes original cage (one screw for the cage does not match). Also includes a copy of the manual/schematic.

Dynaco ST-70 With Highly Desirable Welborne Labs Mods! This amplifier has been fully tested and works great! All tubes tested strong! All matching GE power tubes! Bias was calibrated on both channels! If you have any questions please feel free to ask!

Dynaco ST-70 Tube Amplifier – Working – good condition. Please see the detailed photos for more on condition. Guaranteed to be as described. A picture is worth a thousand words, and I always picture the actual item(s) for sale, so please look carefully at the accompanying photo(s). What you see in the photos is what you get.