I've got too much stuff. This is a very fine sounding amp, but I listen to a lot of female vocals and find myself drawn back to tubes, so I am letting this go. This Class D amp was expertly built by Jason who also designed and sold the very fine metal Class D amp enclosures here on AC under the moniker JTWRACE. The build quality is excellent, no issues, very quiet. The amp is in perfect condition, with the single-ended RCAs connected at this time. I have used this amp with both solid state and tube preamps with great results. Drives both 8 ohm or 4 ohm speakers. The kit alone cost $310, the metal case $200 and the small parts about $50 more, so you are getting a fully built plug and play power amp for about the price of raw parts. You can see the specs for the SDS254 kit at ClassDAudio.com and I can send pictures of the amp upon request. Selling for $535 shipped in the continental US. Please email me directly at meicheng101@sbcglobal.net for pics or purchase.