I bought these in 2005 to build a tube audio stereo system. That system did not get built and now these original A-7s are available. Heathkit amps of the postwar era are beautiful straightforward designs that produce amazingly warm audio. The A-7 uses a 5Y3 rectifier, a 12SN7/12SL7 driver, and 12A6 output tubes. Please review the photos and forward any questions or comments.

Vintage The Fisher 55-A Tube Mono Block Amplifiers Set Of 2 Restored Rare. This wonderful pair of 1950s mono block amplifiers were just restored by my tech at Voorslag Audio in Providence, RI and are performing up to spec. They are very well known for their excellent work on vintage hifi gear. You don’t see a pair of these amps come around very often. Message me with any questions. Fully restored and gone over, all tubes tested and faulty components properly replaced and all bad connections buttoned up, all tubes tested and in green. Plenty of test hours ran on them and they sound terrific.

Works and plays music has some static will need some work. Speaker is not included I will remove the amp from the box.

Vintage Pair Pre-Owned in Very Good Condition. Some Wear Shown in Photos.

This mono block was pulled from a console cabinet stereo. It needs to be gone through… I’m pretty sure it came from a telefunken… There’s a chance it could have came from a grundig or something else german.

A Rare Gem for Audiophiles, Musicians, and Collectors. Step back in time with this authentic 1930s-1940s Williamson Dual Mono Block Tube Amplifier, a rare and historically significant piece of audio equipment that shaped the hi-fi revolution. Whether you’re a collector, audiophile, or musician, this amplifier combines vintage charm with functionality. Vintage Authenticity: Original components dating back to the 1930s and early 1940s, including rare vintage tubes. Fully Serviced: Recently serviced with minor updates to ensure modern compatibility while preserving its historical integrity. 15-Watt Output: Perfect for a range of audio applications, including guitar, bass, keys, or other audio sources. Original Patina: Retains its original finish, showcasing natural wear and patina for a truly authentic vintage look. Enhanced Functionality: Added tone potentiometer for superior sound control. Provenance: Previously owned by a WWII submarine sonar technician, adding a unique story to this amp’s legacy. Why This Amplifier Stands Out. Rare Collectible : Few amplifiers from this era remain in such functional condition. A true piece of audio history! Versatile Use: Suitable for musicians, studio owners, and vintage audio enthusiasts. Works with guitar, bass, keys, or any audio source. Historical Significance: Own a piece of the early hi-fi movement that transformed how we experience sound. Functional: Plays beautifully with only one microphonic tube replaced. Cosmetic: Features minor rusting, wear, and authentic patina, reflecting its age and history. Documentation: Includes a rough diagram from Lyle and extensive research about its origin and components. Who Is This For? This amplifier is ideal for. Collectors seeking a unique and rare addition to their vintage electronics collection. Musicians wanting a classic sound with a story behind it. Audiophiles who value the warm, rich tone of a true vintage tube amp. This one-of-a-kind amplifier won’t last long. Relive the golden era of hi-fi audio or add an authentic centerpiece to your collection. Don’t miss your chance to own a piece of audio history! Track Page Views With.

Eico HF-20 Tube Amplifier (2 monoblock included) tested – works but needs replacement of capacitors and some work. Transformers work quietly and do not heat up.

Uncertain of the brand of this amplifier. One rectifier tube is broken and a 12ax7 tube is missing.

Vintage The Fisher Model 100 Mono-Block Tube Amp Amplifier. I was told by someone familiar with these that it’s not a good idea to power them on without the right equipment. But most likely it will need servicing. It has cosmetic wear as shown and the is missing some screws and I could not get the cover back on all the way. Offers will be answered quickly, within hours or less, not days. No reasonable offer refused.