- 400 watts x 2 @ 8 Ω RMS, both channels driven
- 600 watts x 2 @ 4 Ω RMS, both channels driven
- 1200 watts x 1@ 8 Ω, in bridged mode
- Circuitry designed by legendary John Curl
- Ultra-high bias Class A/AB operation
- 12 watts per channel of pure Class A power
- 90 amperes peak current per channel
- Stable with speaker impedance dips to 1.5 Ω
- Balanced inputs with discrete circuits
- CHK Infinium, custom 5-way speaker binding posts
- Neutrik locking XLR input connectors
- Vampire gold-plated RCA input & loop output jacks
- Direct-coupled signal path, no capacitors or inductors
- DC Servo and relay protection circuits
- AC turn-on inrush surge protection with relay bypass
- Dual-mono input stages with ±110 volt DC rails
- JFET input stage, MOSFET driver stage
- 24 beta-matched 15 ampere, 60 MHz bipolar output transistors
- 1.7 kVA shielded toroid power transformer with independent windings for each channel
- Independent power supplies for left & right channel input stages, driver stages, output stages
- 8,880 µF Nichicon Gold Tune filter capacitors for input stages
- 132,000 µF Rubycon filter capacitors for output stages
- Full power is rated all the way down to 5Hz for unrestricted low-end bass
- Harris hyper-fast soft-recovery bridge diode rectifiers
- Automatic turn-on by 12 V trigger or audio sensing
- 4 rack space chassis with rear carry handles
- Rack mount hardware is included
- Available in silver or black
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
90 amps peak, per channel
Slew Rate
> 130 volts per microsecond
Frequency Response
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
> 1200 at 20 k 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