Features: Total 8 LOOP channels, but can be used as dual independent 4-channel setting. Offers maximum storage of 32 effects sets, various choices to match your need better. Equipped with 4 built-in programmable triggers, to switch the Amp channel or effects mode settings with them. Four triggers can be set separately, like trigger polarity, mode & action status (including the settings under BYPASS) With tuner interface & mute switch for keeping mute or tuning. Buffered bypass will color your tone, allow you to run long cables without worry. Metal alloy housing, durable & sturdy.