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 the tube complements, EL84, 12AX7, 12AU7.

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 is a fantastic little integrated amp, if you have speakers that are efficient. If you want a straight power amp, the HF-87 is 35wpc, and the HF-89 is 50wpc.

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 okay... the EICO HF-81's poor low and high frequency linearity and the idiosyncratic nature of its tone controls leave me scratching my head about why so many audiophiles ...

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 decided to order a new Torii Mk III (mine was one of the first built, without the bass controls which I really want) and a new pair of HR-1 speakers (mine were a very ...

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 knew what they were doing. The only variation I would have requested is to use copper wire inside instead of silver, but apparently yours sounds fantastic anyway.

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 owned big Tannoy's for over 8 years now (DMT15 MKII studio monitors).

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 thinking of adding a subwoofer. The Eico is putting out around 14 clean watts per channel. Would anyone have any thoughts on the "right" subwoofer to add to this system?

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 amps on the other hand tend to have better frequency extension at the extremes, but maybe at the expense of tube "glow". Depends on what you are after.

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 more types of speakers beautifully in most scenarios, unless the speakers are very inefficient.

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