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The Quested AP300-4 is a four-channel power amplifier from the AP range, delivering 300 W per channel into 4 Ω. The AP range is based on a Class AB architecture with fully analogue input stages and integrated cooling fans, designed for 19″ rack mounting.
The AP300-4 is a practical choice wherever several smaller passive speakers need to be driven from one unit – for example surround channels or smaller multichannel monitor systems. Each channel offers advanced limiting and balanced inputs, and the very low distortion (below 0.008 % at 1 kHz) reflects the audiophile-grade design of the range. Each channel has its own front-panel volume control. Optional factory-fitted analogue filter boards remove the need for an external crossover.
Key features:
- Four channels
- 300 W @ 4 Ω / 160 W @ 8 Ω / 475 W @ 2 Ω per channel
- Frequency response 20 Hz – 20 kHz ±0.5 dB
- THD below 0.008 % @ 1 kHz, below 0.03 % 20 Hz – 20 kHz
- Gain 32 dB, sensitivity +2.0 dBu (1.0 V)
- 4× front-panel volume controls
- Advanced limiting, balanced inputs
- 482 × 88 × 428 mm, 14.9 kg
Applications:
Studio and film production systems, surround channels and smaller multichannel installations with Quested passive speakers.
- Type: 4-channel power amplifier, 2U rack
- Output power per channel: 160 W @ 8 Ω, 300 W @ 4 Ω, 475 W @ 2 Ω
- Frequency response: 20 Hz – 20 kHz ±0.5 dB
- THD: <0.008 % @ 1 kHz; <0.03 % 20 Hz – 20 kHz
- Gain: 32 dB; sensitivity +2.0 dBu (1.0 V)
- Controls: 4× front-panel volume pots
- Consumption (4 Ω): 1.5 A @ 240 V / 3.0 A @ 120 V
- Dimensions (W×H×D): 482 × 88 × 428 mm
- Weight: 14.9 kg
