Vintage Tube Amp

Cosmetically in good shape but shows signs of its age. It will be well packaged very well. The Eico HF 81 Vacuum Tube Stereo Integrated Amplifier is a vintage audio component that offers a classic sound experience. This unit, designed by EICO, is a tube amplifier with the model number Eico HF 81. While untested, this piece of vintage electronics holds the potential to deliver high-quality audio performance and add a touch of nostalgia to any audio setup. The included manual provides insight into the operation and maintenance of this unique amplifier, making it a valuable addition to a vintage audio collection for audiophiles and collectors alike.

Pioneer SR-101 Stereo Tube Spring Reverb Reverberation Amplifier Vintage Audio STUDIO MODIFIED. Tested and Works good. NOTE- This unit was modified for Studio use. The stock units mixed the right and left output reverb signals. This unit has 2 INDEPENDENT reverb channels just like a normal stereo effect device in a studio. Right channel has right output channel reverb. Two different signals can be used if desired At same time. The signal level have also been increased to 1 Volt RMS levels for better signal to noise. This unit is not suitable for typical stereo system tape monitor loop as the increased gain can overload these 250mV signal inputs if not used with suitable attenuator. It also includes RCA output jacks with signal taken just before the reverb tanks, and provides 16 db of Vacuum-Tube signal gain. This is useful for driving external reverb tanks or to be used as a 2 ch. Tube amp booster or pre-amplifier. A schematic drawing will be included. This unit can be serviced into future by competent tech.

Console pulled The Fisher 460A vintage EL84 tube amplifier approx late 1950′s or early 1960s (See label and serial number in photos). This amp has been fully restored electronically w/ modern capacitors + modifications to account for fact that stereo tuner is no longer present in the console, thus a bias resistor modification is made to properly bias the tubes (See 20 watt gold power resistor mounted to underside chassis). All capacitors and components are top quality such as Nichicon electrolytic and classic “Orange Drop” coupling caps, etc. The original top-side “MULTI-CAN” large capacitors were left in-place for vintage aesthetics while all new capacitors for the DC tube supply voltages were built into the underside as shown in the photos. New rectifier diodes were also installed as shown. A thermistor was added to the A/C input side to soften start-up current surge to the tubes and also add slight voltage drop to account for higher line voltages in today’s homes. The tubes are (2) Sovtek EL84 + (2) Russian 6P14P (EL84) for the power output + (2) 7247 for input stage : The amp, since it hadn’t been run in a while was “burned in” on the bench for approx 2 hours and ran perfect. I re-checked the bias and supply voltages and everything was in-spec. No hum, no sound issues – it’s running great. I will include a marked-up schematic and an original un-marked schematic to show the modification(s) and resistor values performed and needed to make these Fisher console amps run properly in stand-alone mode as was done to this one. An ON/OFF power switch was added (it appears the green LED light in it is out, but does not affect the power switch function). There is also a custom mesh steel plate bottom w/ plastic feet that was added allowing proper ventilation to keep the tubes running cooler. The bottom plate is steel – I left it un-painted as a new owner may want to paint it a custom color or build a wood case for the amp etc and thus it shows a bit of light surface rust as it’s not coated at this point. This amplifier is intended for a vintage tube amp collector or similar who is fully aware of what they are looking at in the photos and how to safely handle a tube amplifier if they remove the bottom cover etc as dangerous voltages are present.

HERE IS A VINTAGE PHILCO VACUUM TUBE STEREO AMPLIFIER. THIS IS ONE OF THE 3 CHANNEL STEREO AMPS THAT WERE POPULAR AT THE TIME. ONE BASS CHANNEL AND 2 MID-TREBLE CHANNELS. THIS IS IN EXCELLENT COSMETIC CONDITION. ALL TRANSFORMERS ARE GOOD. IT USES 4 6BQ5, 3 12AX7 AND A 6CA4 RECTIFIER. SHOULD BE RECAPPED BEFORE USING. ALL TUBES ARE INCLUDED. WILL MAKE A GREAT WINTER PROJECT.

Has some light wear. Missing one knop cap cover (as pictured). Lights are nice and bright.

These parts are salvaged from a chassis. I tried to be careful removing tubes, but working condition unknown. I can’t guarantee the performance of these parts, but it was stored inside. I’m going to list chassis as well.

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

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.

The unit is being serviced, and all the contact and switched has been cleaned with no issue. Brand New Russia Tubes on Power Supply. 5 RCA, 1 DYNACO on signal path, all original. Due to the age of the amp. No return is accepted.