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Eico HF-20, Mono Integrated Amplifier, been serviced and looking very classic. Get the best deals on EICO Vintage Tube Amplifiers when you shop the largest online selection at eBay.com. …

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2019年2月25日 · I have experience with the hf-81, hf-86, hf-87, st-70 and st-40. The 86 and 87 are amp only, but with level adjustments, the 81, 70 and 40 are integrated with preamps. All …

All-Guides Database contains 79 Eico Manuals (189 Devices) for Free Downloading (PDF).

2007年2月12日 · The original Eico design of the HF-85 is woefully inadequate in B+ filtering, such that most stock units will exhibit a slight 120 Hz hum in the output as a result. Using a 50/50 …

2019年5月22日 · The HF-52 is an excellent integrated. Some folks consider the OPTs used in the HF-52 and HF-50 to be even better than the Acro TO-330 used in the HF-60. If I were you, I …

2025年2月27日 · Anyone with experience with the HF-20? Any carbon comp comp resistors out of spec should be replaced. I usually find enough of them out of spec that I've just gotten to the …

2022年12月4日 · WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. the safety precautions around high voltages. Hello all, It's my first post here! C23 and C24 in …

2021年2月25日 · My bedroom stereo has two monaural integrated Williamson amplifiers. One is an Eico HF-20 and the other was made by Elmat but appears to be an HF-20 clone. The Elmat …