The top right mounting corner is slightly bent (see photos), but it doesn't affect mounting, or anything else at all. Minor superficial scratches, as seen in photos. If you're looking for an Avalon 737, then I probably don't need to tell you what it does, but: it's a vacuum tube amp / instrument preamp, opto-compressor, sweep EQ. It's one of the most popular pieces of studio gear used in professional productions and recording studios.
It's particularly good for vocals and bass. The item "Avalon VT-737 SP Vacuum Tube Microphone Preamp Excellent Condition" is in sale since Monday, November 12, 2018. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "treasureinseattle" and is located in Santa Ana, California. This item can be shipped to United States.