On paper, Audio Research¡¯s Reference 5 SE is designed to sound like a SET. In practice, it does so perfectly, without the usual flaws or suffocating character from most SET amps.
Ref 5 SE will make almost any system it¡¯s plugged into sound bigger, bolder, more holographic, and more downright musical -- just as a SET. Reference 5 SE is something of a best buy in the super-preamp category.
In showroom condition.
http://www.soundstagehifi.com/index.php/equipment-reviews/661-audio-research-reference-5-se-preamplifier - Review