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United’s Replay Box offers the very best performance and options for re-amplification. Whether you’re producing the most tone-savvy musician or experimenting with sound design, the Replay Box performs on a level all of its own — with an ultra-quiet design and flexible tone voicing. Replay Box features two independent reamplification circuits: Transparent and Harmonic. The Transparent circuit features our custom-wound, US-made, 5043 step up transformer, which provides extraordinary signal isolation and noise rejection for mastering-grade quality. It accepts your balanced or unbalanced line level input signal to deliver an absolutely clean, isolated, unbalanced output capable of driving any amp, pedal, or processor. Because the transformer is wound to have passive gain, it has about 3 dB of additional gain on tap above its already 4 dB rated input from your DAW or recorder. No active circuitry or other components are involved — you get the cleanest gain available on any re-amplification device. The Harmonic circuit is for those who desire a bit more coloration or fattening in the re-amp stage. Harmonic mode engages an alternate transformer specifically designed to add character. This transformer is wound to offer a steeper gain ratio alongside a very gentle rolling-off of the uppermost high frequencies. It adds both harmonic and phase distortion in the sub-bass region, fattening the low mids and delivering a more aggressive and warmer tone.
