Power Output –
 RMS, Both Channels Driven (20 Hz - 20 kHz)
             
120 watts x 4 @ 8Ω
             
150 watts x 4 @ 4Ω or 2Ω

Minimum Speaker Impedance:

A+B Outputs of a Single Channel: 2 Ω
             

Note: Continuous operation at this minimum impedance might require additional ventilation for the amplifier.

Frequency Response:

20 Hz - 20 kHz, +0/-0.25 dB
             
5 Hz - 50 kHz, +0/-3 dB

Total Harmonic Distortion:

< 0.05 % at typical listening levels
             
< 1.0% at full power

Interchannel Crosstalk:
 70 dB at 20 kHz

Total Gain:
  29 dB (Level controls set to Maximum)

S/N Ratio:
  >112 dB, input shorted, IHF A-weighted

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

Audio Trigger Requirements:
 2 mV audio signal

AC Power Requirement:

600 Watts maximum
             
60 Watts typical (music playing in all zones)
             
30 Watts idle (all zones on)
             
15 Watts idle (one zone on)
             
100-250 VAC 50/60 Hz (automatic)

Dimensions: 

Width: 17.25" (437 mm)
             
Depth: 14.25" (362 mm)
             
Depth: 16" (406 mm) with cables connected
             
Height, with feet:  2.5" (63.5 mm)
             
Height, without feet: 1.75" (45 mm), 1U

Weight:

Net: 12 lbs. (5.5kg)
              
Shipping: 18 lbs. (8.2 kg)