Building on the rich, warm, pulsating modulation of Monument, the MONUMENTAL HARMONIC STEREO TREMOLO is an analog optical tremolo that evokes the stunning, jagged red sand desert landscape of Monument Valley. It blends harmonic and standard tremolo in stereo to create a rich, luscious, warm, pulsating modulation, allowing for effects as smooth and jagged as the valleys created by our beloved Mother Nature so long ago. New features include the ability to save presets, blend between standard and harmonic tremolo modes, access to new waveform and tap split options, and a pan control to set the stereo spread of the tremolo across the right and left channels, taking you deeper into the world of tremolo you won't hear anywhere else. [New Features] -Stereo input/output -3 onboard presets + live mode -Expression control for all parameters - Additional waveforms and tap divisions - Pan control - SBH blends from standard tremolo mode to harmonic tremolo mode ■ Standard & Harmonic Tremolo Modes The SBH knob allows you to blend between standard and harmonic tremolo modes. In standard mode, all frequencies are affected simultaneously. In harmonic mode, you'll experience a vintage tone inspired by Brownface amplifiers. Low-pass and high-pass versions of the guitar signal are modulated inversely, or 180 degrees out of phase with each other (high and low frequencies rise and fall in opposition to each other). The result is a warm, "crisp" tremolo. Turning SBH counterclockwise adds sharpness to the tremolo pulse and reduces out-of-phase harmonics. ■ 3 presets + live mode Monumental features a Live mode and three onboard presets. Each preset allows you to save and recall all available parameters. Pressing both the Bypass and Tap Tempo switches simultaneously cycles through the available presets: Red, Green, Blue, and White (Live). PAN control Use the PAN knob to control the stereo spread of the left and right channels. Counterclockwise is a standard tremolo sound, with identical LFOs on both the left and right channels. Turning the knob clockwise cancels the phase of the right LFO, resulting in stereo spread. At full clockwise, the right channel LFO is 180 degrees out of phase with the left channel LFO, resulting in maximum panning. ■Specifications Power Supply: 9VDC or 12VDC center negative (for adapter only) 100mA minimum -SIZE:7.4cm(W)×5.8(H)×12.2(D)cm -WEIGHT: 342g