Great preamp, bought it along a couple of EMG 40DC soapbars to upgrade a 5 String Peavey Grind. Happy with the results, tone is clear and crisp, and the level of control is fantastic , the only downside are the stock knobs, which feel a bit "cheap" and difficult to get working as they should (on the concentric ones, top and bottom are very keen to stick together making the adjustments difficult). All in all, an excellent choice , especially for getting THAT metal bass sound.