Trace Elliot GP21SMX Pre-amp. It's been racked all its life and in great shape. Here are some of the details: -Solid State and Tube Preamp -2 Pre-Shape Settings -12 Band EQ w/ volume control -High and Low Compression with individual controls -Effects loop volume control -Bi-amp capabilities And the great Trace Elliot Tone. I'll accept paypal, MO or checks. I will get some pictures up tonight.