United Studio Technologies Replay Box; dual transformer reamp box; two transformers for different voicings; Transparent circuit for transparent sound; Harmonic circuit for warmer tone with harmonic distortion; low-noise design with high gain; Ground-Lift and Phase Inverse switch; Level control; Frequency Range (Transparent mode): 20Hz - 20kHz (+/- 0.5dB); Frequency Range (Harmonic mode): 40Hz - 20kHz (+/- 0.5dB); Connections: 1x Input (3-pin XLR), 1x Input / Thru (6.3mm jack) - Impedance: 300Ohm, Harmonic: 50Ohm, 1x Output (6.3mm jack) - Impedance: 1kOhm, Harmonic: 150Ohm; stage-ready aluminum housing; Dimensions (H x W x D): 46 x 149 x 155mm; Weight: 0.8kg