The M28, Performance Amplified.

Total Harmonic Distortion THD+N less than 0.005% 20hz-20kHz at full rated power into 8, 4 and 2 ohms.
Power 200W into 8 ohms, 400W into 4 ohms, 400W into 2 ohms.
Frequency response 10hz-150kHz, within 0.5db.
Signal to Noise greater than 85db at full rated.
Power Topology Fully Differential, bi polar.
Balanced Input XLR connector 200k ohm impedance.
Unbalanced Input RCA connector 100k ohm impedance.
Weight 85 lbs.
Shipping Weight 100 lbs.
Finish Anodized Aluminum.
Mains Voltage set at factory 100, 120, 220, 230, 240 VAC, 50 Hz - 60 Hz.
Trigger In TRS connector for 5V external trigger.
Input Trim 0db, -6db, -12db,-18db of attenuation.
Power consumption 60W standby, 2W idle.