The Quad 909 stereo power amplifier outputs 140 watts per channel into 8 ohms or 225 watts into 4 ohms, with a frequency response of 13Hz–40kHz and a total harmonic distortion of under
0.01%
. It features Quad's Current Dumping technology and has dimensions of
321×140×240
mm and a weight of 12 kg. Performance and features
- Power output: 140 watts per channel into 8 ohms and 225 watts into 4 ohms
- Total harmonic distortion (THD): <
0.01%(from 20Hz–20kHz at 100W into 8Ω)
- Frequency response: 13Hz–40kHz, measured as
−1.0dB at 13Hz and 40kHz, ref. 1kHz
- Signal-to-noise ratio: 108 dB (ref. 140 watts)
- Input sensitivity: 775 mV (for full output)
- Technology: Quad's proprietary Current Dumping, which uses a low-power Class A amplifier to drive a high-power Class B amplifier
Physical specifications
- Dimensions:
321×140×240mm (W x H x D)
- Weight: 12 kg
- Inputs: RCA, XLR
- Speaker load impedance: 4Ω minimum
Other information
- Stability: Unconditionally stable into any load
cosmetically very clean