Strymon PCH-1 DI & Headphone Amp; Stereo DI box & headphone amplifier for Electric Guitar & Bass; Stereo Active Direct Interface with an onboard high-quality Headphone Amplifier; listen to the sound of your entire Rig or Pedalboard in stereo or dual mono; Switchable Mic/Line level operation for the XLR outputs; Controls: Phones; Push Buttons: Ground Lift, Level Mic/Line; LED: Effect On; Footswitches: Effect Bypass; Connections: L & R Input (2 x 1/4" Jack), L & R Thru (1/4" Jack), L & R Output (2 x XLR), Phones (1/4" TRS-Jack), Sum/Stereo; Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 500 mA; powered by a 9 V DC Power Supply (not included); 125x74x49mm (LxWxH); suitable optional Power Supply: Item no. #409939); Note: Battery operation is not supported