Performance
Power Output:

XS500  : 4ΩDual-500W / 8ΩDual-400W / 2ΩDual-750W / 8ΩBridgeMono-1,450W
XS700  : 4ΩDual-750W / 8ΩDual-480W / 2ΩDual-900W / 8ΩBridgeMono-1,645W
XS900  : 4ΩDual-900W / 8ΩDual-600W / 2ΩDual-1,200W / 8ΩBridgeMono-2,1000W
XS4300 : 4ΩDual-300W / 8ΩDual-200W /                        / 8ΩBridgeMono-700W
Sensitivity (volts RMS) for full rated power at 4 ohms: 1.4V
Frequency Response (at 1 watt): 22 Hz to 22 kHz: ? dB.
Phase Response (degrees at 1 watt, 20 Hz to 20 kHz): 5? ?8?br> Signal-to-Noise Ratio:
A-weighted, below rated power: > 102 dB.
22Hz to 22kHz, below rated power: > 97 dB.
Total Harmonic Distortion (THD) at full bandwidth power, from 20 Hz to 20 kHz: 0.5%.
Intermodulation Distortion (IMD):
(60 Hz and 7 kHz at 4:1) from full rated output to ?0 dB: < 1%.
Damping Factor (8 ohm) 10 Hz to 400 Hz:
> 200.
Crosstalk (below rated power):
Xs500 (1 kHz, 20 kHz): > 55 dB, > 55 dB
Xs700 (1 kHz, 20 kHz): > 55 dB, > 55 dB
Xs900 (1 kHz, 20 kHz): > 67 dB, > 62 dB
Xs1200 (1 kHz, 20 kHz): >65 dB, >45 dB
Xs4300 (1 kHz, 20 kHz): > 57 dB, > 40 dB
Voltage Gain (at maximum level setting):
Xs500: 32:1 (30.1 dB)
Xs700: 38:1 (31.6 dB)
Xs900: 42:1 (32.5 dB)
Xs1200: 47.4:1 (33.5 dB)
Xs4300: 25:1 (27.8 dB)
Load Impedance: Safe with all types of loads.
Xs500, 700, 900, 1200: 2 to 8 ohms in Stereo, 4 to 8 ohms in Bridge Mono.
Xs4300: 4 to 8 ohms in Stereo, 8 ohms in Bridge Mono.
AC Line Voltage and Frequency Configurations Available (?0%): 120VAC/60 Hz and 230VAC/50 Hz.

Controls
Level: Two or four front-panel, gray rotary level controls, one for each channel.
Power: Front-panel switch; on when in the right-hand position.