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Digital Power Amplifier, 2x 250 W @ 4 Ohm (2x 170 W @ 8 Ohm), 1x 500 W Bridged @ 8 Ohm (1U)

The DA-250D from Toa Electronics is a high-quality 1RU digital amplifier designed for installed applications. It offers two channels of input and output, with removable terminal block inputs and a screw terminal strip for outputs. If desired, the first input channel signal can be routed to both outputs, perfect for multi-zone paging.

The front of the unit provides large control knobs for input level control, as well as LEDs to show input, output, power, peak, and protect status. The built-in protection circuitry protects against damages from short circuits, overloads, and overheating. Class-D circuitry provides excellent audio quality and allows the DA-250D to operate at 85 percent efficiency, so it consumes almost 1/3 less power than analog amplifiers.


Available Configurations Include:

DA-250DH CU Digital Power Amplifier, 2x 250 W @ 70V, 1x 500 W Bridged @ 140V (1U)
DA-250F CU Digital Power Amplifier, 4x 250 W @ 4 ohms (4x 170 W @ 8 ohms), 2x 500 W Bridged @ 8 ohms (1U)
DA-250FH CU Digital Power Amplifier, 4x 250 W @ 70V, 2x 500 W @ 140V (1U)

DA-250D features include:

  • Sleek, 1RU unit fits into any standard audio rack
  • Two channels of I/O, perfect for multiple zones
  • Terminal block inputs and a screw terminal strip for outputs make it easy to connect equipment
  • The channel 1 input may be routed to all outputs, perfect for paging
  • Class-D circuitry for great audio quality and efficiency
  • Independent power supply for each channel
  • Simple interface with front-panel level control knobs
  • Protection circuitry for short circuits, overheating, and overloads
  • Status LEDs for power, input, output, peak, and protect
  • Removable dust filters for easy cleaning
Output Power 2x 250W (4 Ohms)
2 x 170W (8 Ohms)
1 x 500W (8 ohms) bridged
1 x 340W (16 Ohms) bridged
Frequency Response 20Hz - 20kHz (±1dB)
Total Harmonic Distortion (THD) 0.15% (1kHz)
0.3% (20Hz - 20kHz)
Input Sensitivity +4dB (1.23V) or -10dB (0.24V) (Selectable with Inner Jumper)
Input Impedance 10 kOhms, Electronically Balanced
Signal to Noise Ratio 100dB
Connectors 1 x AC Power Input
2 x 3-Pin Removable Terminal Block Input Connectors
1 x Screw Terminal Strip Output (2 Channels)
Controls 1 x Power Switch
2 x Input Volume Control Knobs
2 x Bridge On/Off Buttons
1 x Ch1 Mode On/Off Button
Indicators 1 x Blue Power LED
2 x Green Input LEDs
2 x Yellow Output LEDs
2 x Red Peak LEDs
2 x Red Protect LEDs
Power Requirements 120VAC, 50/60Hz
Power Consumption 420W, 5.9A
Dimensions (WxHxD) 19 x 1.7 x 15.7" (482 x 44 x 401mm)
Weight 11.02 lbs (5kg)

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Prices and specifications subject to change without notice.