-규격 및 성능   QD-4240 QD-4480 Power Output Level     f=1KHz, THD+N≤0.05% (Typical)     QUAD RL=8Ω 40W 80W RL=4Ω 240W 120W BRIDGED STEREO RL=8Ω 120W 240W One Channel Driven     f=1KHz THD+N≤0.05% RL=4Ω 60W 120W Frequency Response RL=8Ω, P.=1W 0dB+0.5, –1.5dB: f=DC~55KHz Power Bandwidth Half Power, THD+N≤0.1% 10Hz~70KHz STEREO RL=8Ω Total Harmonic Distortion (THD+N)   f=20Hz~20KHz, Half Power   STEREO RL=8Ω ≤0.05% RL=4Ω ≤0 .07% BRIDGED RL=8Ω ≤0.07% Channel Separation Half Power RL=8Ω,   ≥80dB  f=1KHz, ATT. max. Input 600Ω  shunt Residual Noise (DIN Audio Filter) ≤ –70dB: ATT min. Signal-to-Noise Ratio DIN Audio,   ≥100dB Input 600Ω  Shunt Sensitivity (ATT max.)   0dBm Rated Power into 4Ω  1KHz Input Impedance (ATT max.) ≥ 20KΩ  (Balance/Unbalance) Indicators Power  (Red)   Protection (Mute) x 4  (Green)   Clip x 4  (Red)   Signal x 4  (Green) Protection Power SW ON/OFF muting   Heatsink Temp ≥ 100°C (212°F) PC Limiter RL < 2Ω Fan Circuit –50°C (122°F)–60°C (140°F)–   Low-Speed – Variable – Hi-Speed Controls (Front)Power SW: Push up On/Push down Off   Attenuator: 21-position dB calibrated   (Rear)Mode SW: Bridge=BTL/STEREO/PARALLEL 사용전원 AC 220V, 60Hz 소비전력 800W 1000W 중량 11.5kg 15.5kg 외형 482(W) x 88(H) x 369(D)mm Connectors Input Combination Jack (balanced)   Output5-Way binding posts x 4 * 0dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power