A versatile tube preamp that allows for diverse adjustment of guitar sound. - Brand: Koch - Model Name: Pedaltone - Type: All-Tube Preamp - Functions: CH1/CH2, CH2-BOOST, POWER AMP, SOLO/RHYTHM - Controls: Volume, Bass, Treble, Gain, Mid, Rhythm Volume, Drive - Accessories: Carrying case Thank you for viewing. This is the Koch Pedaltone preamp. Sound output has been confirmed. Both channels and switches are working without any issues, and there was no crackling. How about this for those looking for a great distortion sound? Type: Electric Guitar