"The Donner Dark Horizon is for the players who are looking for an old-school British-style distortion tone. We have allowed extra tone shaping capabilities with a three-band EQ. Note: Please use a power adapter with a voltage of DC9V, an internal negative and external positive polarity and a current of 500mA or more to power your pedal. Failure to do so can cause serious situations where the product does not work or is damaged. Pedal Features: Classic High Gain Pedal This is a crunch rock machine you should have in your rig. This pedal is a tribute to the classic British amp. Just plug it in and get the sound of classic rock songs. True Analog Circuit The analog circuit carefully designed by the Donner R&D team allows you to get the most direct and true dynamic response and return to the most original British sound. Any clean amp plus the Dark Horizon equals instant ""energetic"" high-gain. 2 Clipping Mode Paired with 2 clipping circuit, Donner Dark Horizon opens up a world of tonal bliss, from the original high gain tones(II) and the more detailed mid gain mode(I), with a lightning fast, top end, and a remarkable touch sensitivity. Controls 1. 9V Input2. EQ Control.3. Gain Control4. Volume Control.5. Mode switch.6. On/Off Display.7. Output.8. Input.9.On/Off Footswitch. Specifications Power: 9V DC center negative Current Consumption: 100mA Dimensions: 113.5x64x52.6mm Weight: 260g"