These amps are rated at 14 watts per channel and feature a built in phono stage. The amp has been restored with the following work completed: A complete bare chassis restoration..chassis cleaned and rca jacks labelled at back. New Belton tube sockets and shields in phono/preamp section, and in power/ pre-driver section . Original sockets for rectifier tubes. Completely rewired with stranded 22 guage wire. All new power supply capacitors, 2 40uf/450v , can cap was replaced with a JJ 100uf dual at 500v, plus an additional 68 uf /250v under the chassis. All the small caps were replaced with silver mica, bypass caps were polypropylene. Coupling caps in the preamp section and power amp section are all PIO K40 Russian and all other small electrolytic caps also new.
Resistors in the power supply rail are metal oxide , plate resistors are Kiwame 2 watt carbon film and all others are carbon film. The original speaker terminals and all rca jacks were replaced with binding posts for the speakers and gold rca jacks for the inputs. The speaker terminals have the 4 ohm and 8 ohm taps connected to the binding posts. The 4 ohm tap is next to the black terminal. The original rca jacks were terrible in these amps, making bad contacts and having intermittent grounds. The new rca jacks are tight and have a solid ground. This comes with a new Heyboer extra heavy duty power transformer, which has more metal core and the heaters can handle a few extra amps than their regular replacement version. It comes with a new power cord. The Input selector was replaced with a new 6x2 switch, and thus all the RIAA phono equalization components have been installed under the chassis. This improves the phono section drastically in this amp with NO HUM!! There are 3 line inputs now, 1 phono and 1 line out. The mono/stereo blend switch has been bypassed along with the mono switch on the chassis. The on/off switch on the treble shaft has been moved to the old tape switch on the front and anew switch installed.
Tubes: 1 EZ81/6CA4 Mullard Rectifier Tube, 1 EZ81 Amprex Bugel Boy Phono Stage: 1 Eico Mullard, 1 Rogers Made GT Britain-Canada(Amprex) Preamp Stage 2 Eico Mullard 12AU7 Line Stage 2 12AX7 Eico Mullard Power Tubes-4 Matched NOS Sylvania 6BQ5/EL84 Made in USA All tubes tested and no leakage or shorts. I can provide all mullard date codes if needed.
All the output transformers are original. The chassis front, and sides and top grill have been repainted..looks great!! The faceplate was cleaned and looks very nice. It has all the original knobs. This one is dead quiet, with no hum, all the controls were cleaned and are quiet. There has been many hours of work to restore this unit thus the higher asking price and a nice complement of mainly mullard tubes. Email for additional info and pix if required. Prefer EMT, paypal add 4%.
Re: Eico HF81-Complete Restore-Excellent Condition-Must See
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