The LT-DRIVE delivers guitar tone from warm boost to rich screaming lead tone. Its sound is ideal for crisp clean sound, distorted rhythm guitar sounds and solo sound in the upper gain range. Simple, functional and convincing in sound - as an effect pedal should be. Details: Gain control Level control Tone control Stable metal housing Operation via optionally available power supply (not included) or via 9V battery (not included) + keepdrum power supply 9V The keepdrum 9V power supply is a compact 9V plug-in power supply that works with direct current. It has a 5.5mm hollow plug and is ideally suited for guitar and bass effect devices such as Boss, Korg, Zoom or Blackstar. Of course, the power supply can be used for all other devices that are operated with a voltage of 9V and correspond to the polarity outside plus pole, inside minus pole. Details: Output: 9V direct current 600mA DC Input: 100-240V 50/60Hz 5,5mm hollow plug Polarity: plus pole outside, minus pole inside suitable for all common guitar and bass effects such as Zoom, Boss, Ibanez, Korg, Blackstar Dimensions power supply body without plug (LxWxH): 70mm x 27mm x 40mm.