"There is good demand for old Audio Research pieces IMO"
In fact, the demand is so high, it will cost you a small house. Check this ad out:
http://www.ebay.com/itm/2-x-AUDIO-RESEARCH-REFERENCE-600MKIII-MONO-TUBE-AMPLIFIER-MADE-IN-USA-1200-W...
In fact, the demand is so high, it will cost you a small house. Check this ad out:
http://www.ebay.com/itm/2-x-AUDIO-RESEARCH-REFERENCE-600MKIII-MONO-TUBE-AMPLIFIER-MADE-IN-USA-1200-W...