2016年4月18日 · For me, the best sounding tube amp I have ever heard is the EICO HF-81. Not everyone agrees, of course, but this amp has an unbelievable sweet, 3D sound, likely due to …

2005年2月21日 · Eico does make higher powered integrated amplifiers, as well as straight amplifiers. The Eico ST-40 integrated is 20wpc and the ST-70 integrated is 35wpc. The HF-81 …

2006年5月17日 · "The HF-81´s poor HF linearity results in a very disappointing result on the high-frequency intermodulation test..." "Although some aspects of its measured performance were …

2013年6月9日 · The HF-81 just doesn't have what it takes for these speakers. So . . .synergy yes, tastes to a degree as well. I've sold a house this year, relocated across the country, and I …

2014年11月29日 · Eico HF 81 is a great amp. Wonderful sound. I had one that I loved. Then I had it rebuilt and it killed the magic, so I sold it. It looks like this one was done right. Someone …

2009年1月1日 · The Eico HF-81 is a very nice unit. If you want to listen fairly loud, then you will require a speaker with sensitivity over 90db and with a fairly benign impedance curve. I've …

2012年2月3日 · I'm using a 10 inch Full Range speaker system with my EICO HF-81 Tube amp. Resulting sound is awsome in the highs and mids, but a bit thin in the bass dept. So, I'm …

2015年1月5日 · In comparing Fisher and Eico tube amps, I have noted that Fisher amps (in general) sound more lush in the midrange, with warmer bass. Treble extension is fine. Eico …

2017年11月14日 · Listening to my 500C through a pair of AR 2ax's, and it donned on me that while flea watt might be great for Cornwall's, a 500C(or something similar) will drive many …

2003年10月10日 · Valuable Eico stuff HF-50 amp HF-60 amp HF-86 HF-81 HF-86K HF-87A 70 watts $200-$600 HF-87K 70 watts $200-$600