Description
The USA series amplifiers deliver legendary QSC reliability and audio performance at an economical price. The 400 offers 250 watts of power at 2 ohms and is the perfect choice for studio and control room use.
FEATURES:
Stereo Mode (both channels driven)
• 8 ohms 20 Hz-20 kHz 0.01% THD: 110W
• 8 ohms 1 kHz 1% THD: 125W
• 4 ohms 1 kHz 1% THD: 200W
• 2 ohms 1 kHz 1% THD: 250W
Bridge Mono Mode
• 16 ohms 1 kHz 1% THD: 250W
• 8 ohms 1 kHz 1% THD: 400W
• Signal-to-noise (A weighted): 105 dB
• Input Sensitivity @ 8 ohms: 1.12 Vrms (3.2 dBu)
• Voltage Gain: 28x (29 dB)
• Cooling: Passive
• Weight: 24 lb
• Power Consumption: <6A
• Distortion (SMPTE-IM): Less than 0.025%
• Frequency Response(typical): 20 Hz-20 kHz, 0/-1 dB @ 1 watt
• Damping Factor: greater than 200
• Dynamic Headroom: 2 dB at 8 ohms
• Input Impedance: 10 K ohms unbalanced, 20 K ohms balanced
• Controls: Front: AC Switch, AC Circuit Breaker
Back: Stereo/Bridge Switch, Ch 1 and Ch 2 Gain Knobs 8 Position DIP Switch for Filter and Limiter
• Indicators: POWER: Green LED, CLIP: Red LED, 1 per channel
• Connectors (each channel): Input: Barrier strip and Neutrik Combo 1/4 inch TRS and XLR, tip and pin 2 positive: Speakers: Touch-proof binding posts
• Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic, and protection. Stable into reactive or mismatched loads.
• Load Protection: On/off muting, DC-fault power protection
• Output Circuit Type: Class AB complementary linear outputs
• Power Requirements: 100, 120, 240 VAC, 50-60 Hz
• Dimensions: 19 inch (48.3 cm) rack mounting, 5.25 inch (13.3 cm)tall (3 rack spaces), 9.5 inch (24.1 cm) deep
