One day in 1987, I walked into Audio Excellence, the high-end dealer in San Francisco.

There, I encountered with Infinity RS1bs, powered by Audio Research tube (not FET-hybrid) amplifiers.

Beautiful oak wings and 12 woofers overwhelmed me; I ordered the whole system right there.

A few weeks later my new gears were delivered.

But after the initial listening session, I was under whelmed; EMIT tweeters were too bright and harsh.

Infinity speakers took about 10 years to break in.

And when I replaced Sovtek 6550s with KT88s, which came from Czech Republic, overall sound quality was dramatically improved.

When I play analogue through Koetsu, I am in stereo Nirvana.

I think I will keep this system for another 20 years.