The current moving-coil phono preamp, 50-watt center channel amplifier, and 120-wpc left rear/right rear stereo amplifier (Published in Audio Xpress magazine) are all of my design and construction. In the past, the front left/right 100-watt pure class A monoblocks were also of my design and construction (See Audio Magazine's January, February, and March 1995 issues for construction details).
Prior to purchasing McIntosh MC611 600-watt monoblocks 1-1/2 years ago, the front channel amps were ten Harmon Kardon Citation II tube amps configured by me to deliver 500 wpc, the details for which AudioXpress magazine published.
The listening room was configured in live end/dead end configuration and front 'speakers configured according to a formula I ran across, but acoustics is not my forte. 'Speakers are B&W 802D's, which are excellent in my opinion.