Vintage Tube Amp

Pair (2) Vintage Dynaco Mark III Mono Block PowerAmplifiers. These amps were recently serviced and have been given new filter capcans. They are currently tubed with Mullard EL34′s.

Pair of Dynaco Mark III Amplifiers Dynakit Vintage High-Fidelity UPGRADED. This is an outstanding pair of Mk3s that are very Clean. Both have upgraded VTA 6SN7 Driver boards, New quad Caps, pentrode/Triode switches and Brand New EH 6550′s. Both have been tested and work great. These are ready to go. They will be professionally packaged and insured.

Vintage Dynaco Dynakit Mark III KT88 Stereo Amplifier. This amplifier has been tested and serviced and is in good working condition. Has a set of Svetlana Power Tubes, one is labeled McIntosh and the other straight Svetlana. The 5AR4 Rectifier is an American Made Westinghouse, and the 6AN8 is a Sylvania. True Dynaco Dynakit MK III Monoblock manufactured in Philadelphia. One of the most highly regarded vintage audio tube amplifiers ever built.

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.

I bought this piece all dusty and without been used for years from a garage sale a few years ago, it had one broken tube. I’m adding pictures of the old capacitors, the old tubes (two are MULLARD Fat Brown base EL34 Xf1 still good and the other two are old xf2 black base EL34 tubes), the receipt for the service and a Manual I print out.

Dynaco ST-70 unbuilt kit. Original Dynaco Mullard tubes. I will protect the amp well. Tubes will be boxed separate do forces dont smash them. Cabinet shell has a few minor bends due to its travels.

For restoration or reconstruction, what you will get is exactly the pieces you see in the images.