M-Track Solo 2-Channel USB Audio Interface Specifications:

Mic Input (Balanced Input)

• Frequency Response: 20Hz–20kHz (+0.1dB)
• Signal-to-Noise Ratio: 109dB (A-weighted) 
• THD+N: 0.003% (min. gain, 0dBu out, A-weighted) 
• Preamp: EIN-128dBu (max. gain, 40 ohm source, A-weighted) 
• Gain Range: 0dB to +54dB

Line Input: (balanced 1/4" [6.35mm] TRS)

• Frequency Response: 20Hz–20kHz (+0.1dB) 
• Sensitivity: -43dBu
• THD: 0.002% (min. gain, 0dBu out, A-weighted) 
• Gain Range:  -10dB to +44dB

Instrument Input (unbalanced 1/4" [6.35 mm] TS)

• Frequency Response:  20Hz–20kHz (+0.1dB) THD+N0.005% (min. gain, 0dBu out, A-weighted) 
• Input Impedance: 1 Mohm

Gain Range -10dB to +44dB RCA Outputs

• Frequency Response: 20Hz–20kHz (+0.1dB)
• Signal-to-Noise Ratio: 109dB (A-weighted)
• THD: 0.002% (0dBu out, A-weighted) 
• Max Output Level: +4dBu

Headphone Output (1/4" [6.35 mm] TRS)

• Power: 60mW/Ch, 32 ohm
• Frequency Response: 20Hz–20kHz (+0.5dB) 
• THD+N: 0.02% (A-weighted)
• Signal-to-Noise Ratio: 100dB (A-weighted) 

General

• Power: USB bus-powered
• Dimensions (WxDxH): 6.4” x 4.5” x 2.1”, 16.4 x 11.4 x 5.5 cm 
• Weight: 0.66 lb. 0.30 kg