This is truly a great old amp. It is in rough condition but would make for a terrific project. The cabinet is rough. There is damage to the veneer on the cabinet. The large patch is with the item. There are a couple of other veneer damages. There should be two of the front bar applications. One of these is missing. The inside looks fairly clean. The plug needs replacing. When plugged in the amp powers up and does amplify but the amp starts humming. The humming gets louder and louder to an extreme pitch. I know nothing about amps and hope the description helps. I have no idea how much work it will take to restore this.
Vtg RARE 1950′s GEC UK EL34 Power Amplifier Mullard TUBE PARTRIDGE Transformer. This is believed to be a rare hand built GEC UK EL34 power amplifier with Partridge transformers which looks to be monophonic. The voltage jumper is set to the lowest voltage of 200-210V it does not go lower. Some of the wiring under the power amp has frayed coverings but the wiring and electronics look good with no burns or damp areas. One transformer has electricians tape across the front. The power tubes look to be Mullard EL34 but they are oxidized and assumed not to work.
FEWER THAN 900 EVER BUILT!! Up for sale is an extremely hard-to-find Gibson GA-77 Vanguard (GA-77RVT) combo amplifier – one of the scarcest major-brand tube amps of the 1960s, produced in very low numbers compared to Fender, Ampeg, or even Gibson’s own GA-75/GA-79 lines. These rarely come up for sale in any condition, and far fewer are still fully functional. This one has been recently serviced, recapped, and is ready to play. Why This Amp Is Rare. The GA-77/GA-77RVT was only built in small production runs, and Gibson documentation confirms far fewer were made than the GA-5, GA-8, GA-20, GA-40, or Maestro series. Survivors are scarce, especially with original components and a working reverb/tremolo circuit. These were expensive when new and were primarily ordered for regional pros – not mass-market stores – which means very few original units exist today. Original Jensen Special Design speaker (period-correct and highly desirable). 50-watt class, serious stage volume. Gibson’s highest-end combo of its era. Aluminum control panel, classic Gibson look. Beautiful vintage wood cabinet. Why Collectors Want This Model. The GA-77 Vanguard is widely considered one of the best-sounding and most powerful combos Gibson ever built – and also one of the hardest to find. Most Gibson models of the era had production numbers in the thousands. The GA-77 series had only a fraction of that, making clean examples extremely scarce. If you’re looking for something different than a Fender Twin or Ampeg Reverberocket – something rarer, richer, and historically important – this is the one.
Bogen Challenger CHS-100 Tube-Powered PA Amplifier Vintage Untested – Powers On. When plugged in this powers on (a light appears) but untested further.
This Little Powerhouse Player was amazing for 1950. A wonderful Sounding Player that millions of People have enjoyed throughout the Decades. With Great feathers like single wheel drive, Bearing Platter (increased from 5 bearings to 9). Radio Tube, Amplifier with a 4″x6″ Alnico style Speaker. American engineering will handle its seamless mechanical operation of record stacking up to a Dozen 45 Records. All aspects of this Player has been addressed. Completely Disassembled, Cleaned Repaired, repainted, And or Rebuilt. Painstakingly reassembled calibrated, adjusted, Tested and Tested again. I can’t think of a better use of American technology to bring back to life, for people to enjoy for the next eighty years.
Here’s a really cool tube amplifier. It has mic (or guitar) level input and also line-level input. The phono-plug mic-level input has sensitivity 0.02 V for full output and the RCA line-level input has sensitivity 0.3 V for full output. A two way speaker system in the front which sounds awesome and is really fantastic with a vintage microphone. There’s certainly some potential here for a busking guitar amp or a harmonica amp. All the electrolytics were replaced with F&T or other high quality replacements, Coupling capacitors were replaced as well. No more leaky drifting wax caps. They are well testing vintage tubes. A 6X4 Rectifier, 6V6 Power tube and 12AX7. It operates without issues. Its been brought up to electrical safety standard with a grounded AC cable and a fuse holder was added. These were not fused from the factory. It’s sure to leave you with a repair bill soon after.
Up for sale, a 1954 Gibson GA-20 in excellent condition and in perfect working order. Featuring original two-tone cosmetics, a Jensen P12R speaker, and a professionally serviced circuit, this GA-20 is the perfect mid-size combo from the golden age of tube amplification. In many ways analogous to Fender’s narrow panel tweed amps of the same era, the GA-20 features a four input design with a 6V6 power tube pair, 5Y3GT rectifier, and dual triode (12AX7, etc) tubes in the preamp. Offering distinctly different voicings between the single Microphone input and the three Instrument inputs, the GA-20 is at its most aggressive via the Mic channel. While this input does offer a modicum of clean headroom, it quickly overdrives with a sizzling, chewy sound that’s extremely smooth. The Tone control has an absolutely massive sweep, actually adding a bit more gain when turned up. Maxing out both Volume and Tone knobs yields a ripping, cutting sound that interacts equally well with single coils and humbuckers. The Instrument inputs have more range in the clean signal, with a full-bodied and sweet sound that works well with a host of effects pedals. Turning down the Tone knob on this channel and pushing the Volume can achieve a very nice bark and a spitty quality almost akin to certain fuzz boxes, depending on the guitar being used, and once again diming everything out delivers plenty of richness and roar. The point-to-point circuit has been professionally serviced and thoroughly recapped with premium tubular signal caps in the preamp and F&T power supply caps. The output transformer has been replaced with a vintage-accurate Mercury Magnetics ToneClone GA20-O, mounted to the speaker frame, while the original power transformer is intact, mounted to the back of the chassis. The speaker is the original Jensen P12R alnico magnet driver which has a dark blue/green frame. The speaker has been recently professionally reconed, and the date code on the edge of the frame is from the 9th week of’54. The original two-tone covering exhibits limited wear (particularly when considering the fragility of this material compared to a conventional tolex or tweed), primarily concentrated around the edges, and half of the gold Gibson badge is still intact on the amp’s face. The graphics on the brown faceplate are clean, the brown chickenhead knobs are present, and the leather handle has been replaced.
