• Next day delivery
  • Free standard UK delivery
    on all orders over £75
  • Industry leading
    customer service
  • Free technical support
    from our team of experts


Primarily designed for use in bars and restaurants, where separate control of the music in several areas is required, these designs may be applicable for use in any situation where a number of low-power amplifiers are required, such as for cue-feeds, effects-loudspeakers, museum displays etc.

Three models are available; each combines four separate low-impedance amplifiers in a single 2U rack-mounted case. Each amplifier has an individual, XLR/A-gauge jack combination balanced input connector, a level-control with associated signal-present and clip LED’s, and binding-post speaker terminals. An input-selector switch allows each pair of amplifiers to be driven either separately, with inputs in parallel, or bridged into mono. Both models are fan-cooled with circuit-protection and turn-on delay.

Technical Specification:

Frequency response:20Hz - 20kHz +-0.5db
Distortion:<0.1% THD, 20Hz - 20kHz
Input:Impedance 20k Ω , level 0.775V, for full rated output
Rated Output Power:QD4240QD4480QD4960
8 ohms per channel:40W × 480W × 4170W × 4
4 ohms per channel:60W × 4120W × 4240W × 4
8 ohms per bridged pair:120W × 2240W × 2480W × 2
Weight:11.5 kg15.5 kg17kg
Dimensions:482(w) × 88(h) × 369(d) mm
  Description Price (£) Add to basket
INTER-M QD-4240 POWER AMPLIFIER 4x 40W/8, 60W/4, bridge facility, rackmount, 2U   Stock code:
INTER-M QD-4480 POWER AMPLIFIER 4x 80W/8, 120W/4, bridge facility, rackmount, 2U   Stock code:

Special order product. Order cancellations may incur charges.

INTER-M QD-4960 POWER AMPLIFIER 4x 170W/8, 240W/4, bridge facility, rackmount, 2U   Stock code:
Request callback