About as good as gets with the M90. Sound is pure music with remarkable clarity.
Specifications
Rated Power Output: 24 Watts RMS
Input Sensitivity: 0.33 Volts for full output
Input Impedance: 100,000 Ohms
Frequency Response: +/- 2dB from 10 Hz to 60,000 Hz
Total Harmonic Distortion: < 0.5%
Signal-to-Noise Ratio: -84 dB below 1 Watt
Damping Factor: 10
Power Consumption: 220 Watts (true RMS)
Output Impedance: 4, 8 Ohm
Tube Complement: 4 x 300B
2 x 6SN7
1 x 12AX7
Dimensions: 17.5" W x 15" D x 9" H
Net Weight (per channel): 52 lbs