The TWIN TREM pedal features two different tremolo effects, offering a modern take on vintage tremolo sounds. Pair it with a pedal like the Silvertone 1484 to create a legendary classic sound. The right side (red LED) features a harmonic tremolo (a modern interpretation of the harmonic tremolo from the early 1960s), while the left side (blue LED) features an optical tremolo (a reproduction of the original Silvertone optical tremolo). Each tremolo has independent speed, depth, and volume controls. Combining the two tremolos allows for unique percussive sounds. Features: Dual Tremolo: The right side (red) is a harmonic tremolo, and the left side (blue) is an optical tremolo, each with independent controls. Tremolo Combinations: Combining both tremolos allows you to create unique percussive sounds. Visual Speed Display: LED indicators allow you to visually check the speed and easily synchronize two tremolos. Flexible signal routing: Equipped with four jacks, it allows for flexible signal chain configurations for combining with other effects such as reverb. Stereo compatible: In a stereo setup, the right harmonic tremolo and left optical tremolo can be routed independently for even greater musical expression. Unique sound characteristics: Harmonic Tremolo has a pulsating characteristic similar to Univibe, and when combined with Optical Tremolo, can create percussive effects. Points to note: Signal chain configuration: Flexible signal routing is possible, but please check compatibility with other effect pedals and amplifiers when using. Stereo Setup: When using in stereo, the cables and setup must be precise when routing the left and right tremolos separately. The TWIN TREM is a dual tremolo pedal that offers extensive control and unique musical expression, making it ideal for guitarists and bassists seeking a vintage sound.Spec Product size: 128 x 113 x H68mm Product weight: 870g Input terminal: 1/4 TS PHONE x 2 Input impedance: 1MΩ Output terminal: 1/4 TS PHONE x 2 Output impedance: 10KΩ Control: SPEED x2, DEPTH x2 Power supply/current consumption: DC9V (φ2.1mm center negative)/35mA Package size: 14.8 x 13.5 x 8.5cm Total weight (including packaging): 0.97kg Country of Origin: USA