I like this one a ton. QSC GX Series Buy new for around $500 and get a 6 year warranty. I got mine for $350 on a massive sale, but easy to get around $450 everyday [in US, anyway].
RCA inputs, rackmount, and the following specs with no problems in my 4 ohm HT, but fan noise must be addressed:
GX Series
SPECIFICATIONS GX3 GX5
8 ohms / 1 kHz (both channels driven) 300 W 500 W
8 ohms / 1 kHz (single channels driven) 350 W 600 W
4 ohms / 1 kHz (both channels driven) 425 W 700 W
4 ohms / 1 kHz (single channels driven) 500 W 850 W
Distortion (typical)
20 Hz - 20 kHz, 1 dB below rated power
8 ohms: less than 0.05%
4 ohms: less than 0.1%
Signal to Noise (20 Hz - 20 kHz) 100 dB
Input Sensitivity 1.2 Vrms
Voltage Gain (8 ohms) 32.2 dB 34.4 dB
Output Circuitry Class B 2-tier Class H
Power Requirements (1/8 power, pink noise at 4 ohms, 120V) 6.3A 6A
Frequency Response 20 Hz - 20 kHz, +0, -1 dB
Dynamic Headroom (4 ohms) 2 dB
Input Impedance (ohms) Greater than 20k (balanced)
Maximum Input Level
+24 dB (16 Vrms)
Input Connectors (each channel) 3-pin XLR and 1/4" TRS, balanced, parallel
Phono, unbalanced
Output Connectors (each channel) Speakon®, 1/4", Binding Posts
Amplifier and Load Protection Short circuit, open circuit, thermal, RF protection
Load protected against DC faults
Front Panel Controls and Indicators Gain controls, 21 detents
Red Clip LEDs, proportional, 0.1% THD threshold
Green Signal LEDs, threshold -35 dB
Blue Power LED, AC on
Rear Panel Controls Full Range / Crossover switch
100 Hz, 3rd order LP (sub), 2nd order HP (top)
Dimensions Height: 3.5" (89 mm) 2RU
Width: 19" (483 mm)
Depth: 10.1" (257 mm)
Weight Net: 27 lbs (12.1 kg)
Shipping: 31 lbs (14.1 kg) Net: 28 lbs (12.6 kg)
Shipping: 32 lbs (14.6 kg)
Agency Approvals UL, CE, RoHS/WEEE Compliant
AC Power Consumption
AC Current and Heating, 120 VAC




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