Beautiful EICO HF-81 Stereo Tube Amplifier with All Vintage Tubes Works, Video
Tuesday, July 9th, 2024EICO HF-81 Stereo Tube Amplifier with All Vintage Tubes, with EL84/6BQ5 in Output. Watch it in operation with music from Pro-Ject turntable on Youtube. All tubes are vintage and all included; some are Mullard etc. I provided some pictures to show the circuitry under the chassis. I plugged it in wall voltage of 120V and the amp worked fine and produced great and balanced music in both channels as shown in the video. Since this amp is very old, it may need services before daily use. At least, the new owner should have some professional to go over it. I did notice the following issues. The fuse holder is bit loose. At times, I had to re-tighten the fuse to power it up. The shaft of TREBLE control pot can be pushed in if you re-install the knobs on it. I inserted a small piece of hard foam behind it (inside the chassis) so it’s fixed, for now. I felt some of the contacts or wirings are not 100% secured. I once pulled out one tube shield and incidentally brushed on something (didn’t know what), causing the left channel silent. That channel recovered by itself a few minutes later. I couldn’t find out the cause. That’s why it’s very good idea to have a professional to service it so you can really enjoy it. Physical condition is really good for the age, much better than many others showed up for sale. The front is beautiful; all knobs are original. Chassis is pretty clean. Meshed cover is good. There may be some screws missing in the bottom plate. Overall, this is a beauty to me. I have other audio equipment, like. Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne. AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon, Harbeth, Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch, KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad, Onkyo, Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad, Rogers, Rotel, Rega, Stanton, Speakers, Audio, Stereo, Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.