I am selling my Herron VTSP-1A/166 preamp, in excellent working and cosmetic condition. I am conservatively rating 8/10 based on Audiogon system. It is a great piece, the reviews are spot on with this one. This is a highly rated piece that just plays music, it will let you hear the differences in your source material and cables.
For the specifications refer to the Herron link: http://www.herronaudio.com/vtspspecs.html
One of the many reviews on line: http://www.herronaudio.com/images/ultaud-4-2a.pdf
Another review : http://www.stereophile.com/tubepreamps/211#8t5wgHwJSPVIKLeP.97
It was purchased in 2015 from Keith at Herron Audio, comes with original manufacture packaging, power cord, and owners manual. Sales only to the continental USA, Paypal and shipping fees the responsibility of the purchaser.