This has been one of my go-to preamps for the past 20 years. I've used it with various power amps and speaker cabinets and all the combinations have sounded great.
I've downsized everything and don't feel like carrying a separate power amp so that's why it's up for sale. It's in great shape overall and was never carelessly mounted or dragged in & out of a rack so the entire unit has very few marks and no dings or damage to the mini rack handles. About the only issue is a missing dust cap on one of the indicators that I never replaced. No need for me to extoll the virtues of its tone-shaping capabilities or the control layout; it's all pretty clear and concise.
Online manuals are readily available for printout if you want one. There are 2 inputs one active and the other passive, an effects loop and 1/4 and balanced xlr outputs.
The preamp currently has a single 12ax7 (Groove Tubes, I think). I used to try different vintage tubes such as Mullard, Telefunken and RCA black plates with great results but the current tube offers a great soundstage and is reliable. Everything works as it should and stray pot static (I didn't detect any when I fired it up recently) will go away from regular use. The Bass Palace will be listing more basses and gear between now and Labor Day, so check back often!