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Inter-M DPA-300S

300w/100V Class D Power Amplifier

£494 (£592.80 inc. VAT)
Availability: 3-5 days

Inter-M DPA-300S

The new Inter-M DPA300S is a 300W, 100v Line Class D Power Amplifier for professional PA, AV and background music installations and rackbuilds.

Housed in a discreet and compact 2U casing, this 100v line, single-channel Power Amplifier offers both size and weight reduction benefits.

The DPA300S features Class-D amplification circuitry and a switch mode power supply to provide significant efficiency improvements (typically up to 90% efficient compared to an average of 40% efficiency in conventional amplification).

This compact, professional power amplifier is ideal for large scale PA systems where high power is required over a long speaker line (such as shopping malls, supermarkets, school, colleges, airports, warehouses, etc).

The Class D amplifier offers power efficiency in excess of 90% and ensures low power consumption and significantly reduced heat dissipation. Fully equipped with protection circuitry against short circuit, overload, power and DC output; Inter-M’s DPA Series amplifiers offer less than 1% THD, an increased signal to noise ratio of 90dB and a wider frequency response from 19Hz ~ 18KHz.

The DPA300S also provides Dual Input capabilities, allowing a priority input signal to override the standard/normal input signal; an ideal feature to support emergency paging systems.

The new DPA Class-D Amplifier range is available in 1, 2, 3 and 4 channel versions, with power output options of 300W, 600W, 900W and 1200W per channel.

  • Single channel, 300w output
  • Class-D High-efficiency, high power amplifier
  • 100v/70v selector
  • Only 2U rack height
  • AC and DC power operation
  • Switch Mode power supply
  • Priority Function activated by voltage-free contact closure
  • Remote Power ON/OFF Control via control input

Inter-M DPA-300S Specifications


Inputs Primary and Priority Terminal Blocks
Outputs EuroBlock

Audio Specifications

Rated Output Power 300W @ 100v/70v line
Peak Power 480W
Input Sensitivity 1v/10kΩ balanced
THD Max Output Power Less than 0.1%
THD Rated Power Less than 0.03%
S/n More than 103dB
Frequency Response 50Hz ~ 20KHz


Operating Temperature -10°C - +40°C
Operating Power 220~240VAC 50/60Hz, DC 24V
Power Consumption 130W
Dimensions 482
(W) × 88
(H) × 397
(D) mm
Weight (net) 6.80kg
Weight (gross) 11.00kg
In The Box AC Power Cord × 1
3P Terminal Block × 1
2P Terminal Block × 1
2P Terminal Block (AC Remote power) × 1
8P Terminal Block × 1
Operation Manual × 1
Screws for Rack mount Bracket × 4