Power Output – Both Channels Driven 
400 watts x 2, 8 Ω 
600 watts x 2, 4 Ω

Power Output – Bridged Mode 
1200 watts x 1, 8 Ω 
Bridged 4 Ω operation is not recommended

Power measurement parameters are at 120 VAC: 
0.05% THD, RMS continuous power, 
full audio band (20 Hz - 20 kHz)

Current Capacity 

Slew Rate 
> 130 volts per microsecond

5 Hz - 100 kHz, +0/-3 dB 
20 Hz - 20 kHz, +0/-0.25 dB

Total Harmonic Distortion (THD) 
< 0.05 % at full power 
< 0.03 % at typical listening levels

IM Distortion 
< 0.04 %

TIM 
Unmeasurable

Inter-channel Crosstalk 
> 87 dB at 1 kHz 
> 72 dB at 20 kHz

Input Impedance 
Unbalanced: 33 kΩ 
Balanced: 66 kΩ,(33 kΩ per leg)

Total Gain 
29 dB

Input Sensitivity for 28.28 V Output into 8 Ω 
Unbalanced: 1 V 
Balanced: 1 V per leg

S/N Ratio 
> 116 dB, input shorted, IHF A-weighted 
> 111 dB, input shorted, unweighted

Damping Factor 
1000 at 20 Hz

DC Trigger Requirements 
+9 Vdc to +12 Vdc, 5 mA

Audio Trigger Requirements 
2 mV - 10 mV

XLR Pin Identification 
1 = Ground (Shield) 
2 = Positive 
3 = Negative (Return)

Dimensions 
Width: 17-5⁄8" (448 mm) 
Height without feet: 7-1⁄8" (181 mm) 
Height with feet: 7-3/4" " (197 mm) 
Depth: 20" (508 mm) 
Depth with cables: 21-1⁄2" (546 mm)

Net Weight 
73 lb. (33.1 kg)

Shipping Weight 
90 lb. (40.8 kg)

Power Requirement 
Standby: 1 Watt 
Idle (no music playing): 225 Watts 
Typical listening levels: 400 Watts 
Maximum: 1500 Watts