-------------------------------------------- Beyond Tube Booster This is a buffer/booster effect pedal that uses an Electro-Harmonix 12AU7 EH vacuum tube, suitable for both guitar and bass. It can adapt to a wide range of genres and situations, and simply running your signal through it adds rich harmonics. No issues, operation confirmed. Pedal only. I've owned it as part of my collection, but I haven't used it much, so I'm offering it for sale to someone who needs it. If you purchase it together with other items I have for sale, I will offer a discount to reflect the reduced shipping costs and easier packing/shipping. Thank you! --------------------------------------------