Here is a picture of the Tyler Acoustics room from the AK Fest in metro Detroit this year showing what amp he uses to demo his speakers. Its a Jolida JD-1000, 100 watts per channel EL-34 available used for around $1200.
http://live.audiogon.com/i/akf2010/h/1273523485.jpg
http://live.audiogon.com/i/akf2010/h/1273523485.jpg