Pair Allen Model 75 High Fidelity Mono Tube Amps With Tung Sol 6550’s
Item History & Price
| Reference Number: Avaluer:17898535 | Model: 75 |
| Brand: Allen |
This auction is for a pair of original Allen Model 75 tube monoblock amplifiers in excellent working condition. Allen made these as amplifiers for some of their model organs, but these are hi-if, not PA amps. They are built with audio output transformers and mil-spec point to point wiring, Output is by a pair of 6550s. These sound great and will set you back a lot less than a pair of Marantz 9’s or MC75’s.
This pair was in really nice shape when I got them, but one of them... had developed a mild power supply hum. I replaced almost all the electrolytic caps under both chassis and they play beautifully. I also replaced one of the two input terminals on both amps with a standard RCA jack. Speaker outputs are standard screw terminals with 4, 8 and 16 ohm taps.
Both chassis are original, apart from the updates mentioned above. One has a few small corrosion spots on the top, which should polish out. The other has some heavy corrosion in the mounting flange, where it must have been damp at some time. It’s not too bad and I’ve not attempted to clean it up, but a little elbow grease will clean it up nicely, . It comes with a quad of vintage original US production Tung Sol 6550’s which test strong on my Hickok tube tester. The front end tubes are also vintage tubes and work fine. The output transformer on these are original to the amps. Allen changed output transformer suppliers during the amp’s run and the later amp transformer is slightly different in appearance, but was built to the same specification.
They are sold as-is, but guaranteed to arrive as I have described them. They each weigh about 45 pounds (20KG), closer to 55 when fully packed. They ship from zip 98125. They will be safely packed in separate packages.
PLEASE NOTE: EBay can only display the cost of shipping one package and these must ship in two boxes because it is safer and cheaper. Therefore, the final shipping cost will be double that displayed below.
International bidders: you may bid on these, but they are too large and heavy to ship through the USPS. The best option will be to ship through eBay’s international shipping program.
This pair was in really nice shape when I got them, but one of them... had developed a mild power supply hum. I replaced almost all the electrolytic caps under both chassis and they play beautifully. I also replaced one of the two input terminals on both amps with a standard RCA jack. Speaker outputs are standard screw terminals with 4, 8 and 16 ohm taps.
Both chassis are original, apart from the updates mentioned above. One has a few small corrosion spots on the top, which should polish out. The other has some heavy corrosion in the mounting flange, where it must have been damp at some time. It’s not too bad and I’ve not attempted to clean it up, but a little elbow grease will clean it up nicely, . It comes with a quad of vintage original US production Tung Sol 6550’s which test strong on my Hickok tube tester. The front end tubes are also vintage tubes and work fine. The output transformer on these are original to the amps. Allen changed output transformer suppliers during the amp’s run and the later amp transformer is slightly different in appearance, but was built to the same specification.
They are sold as-is, but guaranteed to arrive as I have described them. They each weigh about 45 pounds (20KG), closer to 55 when fully packed. They ship from zip 98125. They will be safely packed in separate packages.
PLEASE NOTE: EBay can only display the cost of shipping one package and these must ship in two boxes because it is safer and cheaper. Therefore, the final shipping cost will be double that displayed below.
International bidders: you may bid on these, but they are too large and heavy to ship through the USPS. The best option will be to ship through eBay’s international shipping program.
