Koch 63' OD Preamp Authentic product. The vacuum tubes have been replaced with Electro-Harmonix tubes. I've set the condition to "slightly scratched," but it's generally cleaner than typical used items of the same year, as it was mainly used at home. Please check the images. It's quite rare, as it hasn't appeared on the market much in recent years. I also have a Fender amp at home, and since I don't anticipate needing this preamp in the future, I'm selling it as part of a gear clear-out. It might be a good fit for those who want to keep everything within a pedalboard. Please only purchase if you understand that this is used equipment. I want to base our transaction on mutual trust, so I'll limit sales to those with over 10 transactions and less than 1% negative feedback. If you have any questions, please ask in the comments before purchasing. Shipping included.