QSC CX168 8-Channel Professional Power AmplifierGood condition removed and tested from working store music system rack that was remodeled.No cables are included, power supply and and amp unit only.Details from QSX product specs on their websiteFeatures90 watts per channel at 8 ohms and 130 watts per channel at 4 ohmsCompact size—only two rack spaces and 14" deep for reduced rack spaceChannel pairs bridgeable for maximum flexibilityExclusive PowerLight switch-mode power supply technology for high performance and compact sizeActive inrush limiting eliminates AC inrush current, removing the need for expensive power sequencersFour HD15 DataPorts (one per channel pair) for Q-SYS networked control and monitoringCustom integrated gain control security cover for tamper-proof installations1-dB recessed detented gain controls for fast and accurate settingsDetachable Euro-style input and output connectorsDIP switch control for clip limiters, high-pass filters, bridge mono and parallel operationSelectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (33 Hz or 70 Hz)Comprehensive front panel indicators including signal, clip, bridge mono and parallel input LEDsFully protected—including DC, infrasonic and ultrasonic, thermal overload and short circuit protectionHigh-performance Class AB+B complementary bipolar output circuitryLightweight—only 21 pounds (9.5 kg) for easier racking and shipping3-year warranty plus optional 3-year extended service contractAll CX Series amplifiers meet the European Union's, 2006 RoHS directive to restrict the use of hazardous materials used in electronic devices.SPECIFICATIONS CX168 CX108V STEREO MODE, All Channels DrivenContinuous Average Output Power Per Channel8Ω, 0.05% THD 20 Hz–20 kHz 90 W -4Ω, 0.1% THD 20 Hz–20 kHz 130 W -70 V, 0.2% THD 20 Hz–20 kHz - - 100 WMidband Ratings8Ω, 0.1% THD 1 kHz4Ω, 0.1% THD 1 kHz All channels100 W140 W Single channel120 W180 W - - BRIDGE MONO MODE16Ω, 0.1% THD 20 Hz–20 kHz8Ω, 0.1% THD 20 Hz–20 kHz140 V, 0.2% THD 20 Hz-20 kHz180 W260 W- - - 200 WNoise (20 Hz–20 kHz) -107 dB -100 dBInput Sensitivity (for full-rated output power) 1.35 V rms @ 8 ohms 1.26 V rms @ 70VVoltage Gain 20× (26 dB) 56× (35 dB)Input Clipping 6 V rms (+18 dBu) 6 V rms (+18 dBu)Output Circuitry Class Class AB+B Class AB+BFrequency Response 20 Hz–20 kHz, ± 0.2 dB8 Hz–50 kHz, +0/-3 dB 20 Hz–20 kHz, ± 0.4 dB8 Hz–70 kHz, +0/-3 dBDamping Factor Greater than 200(5 kHz and below) Greater than 500(5 kHz and below)Input Impedance 6 kΩ unbalanced,12 kΩ balanced 6 kΩ unbalanced,12 kΩ balancedDistortion (SMPTE-IM) Less than 0.02%Distortion (typical)20 Hz–20 kHz: 10 dB below rated power1.0 kHz and below: at full rated power Less than 0.1% THDLess than 0.03% THDConnectors Input: 3-pin Euro-style detachable terminal blocks, (one per ch.)DataPort: HD-15 Connector, (one per channel pair: Ch 1+2, 3+4, 5+6, 7+8)Output: Two 8-pin Euro-style detachable terminal blocksCooling Variable speed fan, rear-to-front airflow through tunnel heat sinkControls Front: AC switch, Ch 1, 2, 3, 4, 5, 6, 7 & 8 gain knobsRear: DIP switches for Ch. 1–Ch. 8, clip limiter on/off, LF filter on/off, LF filter freq select 33 or 70 Hz for CX168, LF filter freq select 50 or 75 Hz for CX108V, inputs parallel or stereo; bridge modeIndicators PWR-ON: Green LED SIGNAL-35 dB: Green LED(1 per channel)CLIP: Red LED (1 per channel) PARALLEL INPUTS: Orange LED (1 per ch. pair)BRIDGED: Yellow LED (1 per ch. pair)Amplifier Protection Full short circuit, open circuit, thermal, ultrasonic, and RF protection; Stable into reactive or mismatched loadsLoad Protection On/off muting; Individual channel DC fault blockingDimensions (HWD) inches 3.5 x 19 x 14 / 2RUDimensions (HWD) mm 89 x 483 x 356 / 2RUWeight 21 lb (9.5 kg) net, 27 lb (12.3 kg) shippingPower Requirements 100, 120, 230 VAC, 50–60 Hz (configured at factory)SOLD AS IS, NO RETURNS PLEASE