"HI POWER" is a 2-in-1 pedal that faithfully reproduces the amp sound that captures the characteristics of the two HIWATT AMPs "DR103" and "DR504," which are iconic to David Gilmour's guitar sound that can be heard on Pink Floyd's classic album "Wish You Were Here," as well as the original sound of the Colorsound Power Boost, which can be switched between 9V and 18V output. ●Amp section (left side) [INPUT CHANNEL TOGGLE SWITCH]・N (Normal channel): A well-balanced, open sound, this mode is ideal for guitars with single coils or when using an external overdrive booster. B (Bright channel): This mode emphasizes the high and mid frequencies and provides a clean low range, making it ideal for guitars equipped with humbucker pickups. L (Linked function): This mode features a fat gain sound similar to that produced when the Normal channel and Bright channel are linked. [HEADROOM TOGGLE SWITCH]・103: A dynamic sound mode reminiscent of the 100W output HIWATT DR103 ・504: A sound mode with added compression and slight gain reminiscent of the 50W output HIWATT DR504 ●Overdrive section (right side) [VOICING TOGGLE SWITCH] PWR: Boost circuit mode powered by 18V ODR: Overdrive circuit mode powered by 9VSize: Approx. 119 x 97 x 52 mm (including protrusions)