TOA – DA500FH – Amplifier – Power 4 x 500 Watt – 100 Volt – 2RU Class D

$5,749.00 RRP Inc GST


TOA DA500FH Class D Power Amplifier 4 x 500W 100V line 2RU High and 9kg weight




TOA DA500FH is a 4-Channel Digital Power Amplifier designed for 100 V line high-impedance distribution and features lightweight, compact, high power output, and high efficiency.

TOA DA500FH delivers 500 W x 4 channels (20 ohm output) using a switching power supply.

Each channel is equipped with an independent power section. It can be electrically isolated from the high-impedance speaker system by attaching the MT-251H Output Transformer (optional).

Its Control/Monitor terminals permit power ON/OFF control of the individual channels and status monitoring for the power ON/OFF on each channel, protection on each channel, and fan operation.

Prepare the control panel or status monitor display panel separately. It can be mounted in an EIA Standard equipment rack (2 unit size).

Extremely high amplification efficiency of 80-90%, resulting in reduction in power consumption by more than 60% compared with Class-AB amplifiers.

The DA-250 Series is 1-unit size and the DA-500 Series is 2-unit size. They can be efficiently mounted on a rack, so they require only a small installation space. Because the amplifiers do not generate much heat, 5 units can be stacked together in a rack.

Stands up to extended hours of operation. The DA amplifier has undergone a large number of rigorous tests to prove its durability. In addition, TOA has been conducting a “non-stop driving test” of the DA Series.

The DA amplifier has a comprehensive protection circuitry for protection against excessive current flow due to overload, short circuit, unusual DC voltage output, and heat sink temperature rise.

Each of the channels has its own power supply. If the power supply of Channel 1 should fail, this won’t affect the operation of Channels 2-4 (Channel 2 in case of DA-250D/DA-250DH). It is also possible to use one of the channels as a spare amplifier.




  • Class D amplifier
  • Four channels
  • 4x 500W into 100V line
  • 2RU




Power Source 220 – 240 V AC
Amplification Type Class D
Power Consumption 460 W (based on EN standards)
2350 W (rated output 100 V line
Input 4 circuits
10 kΩ
XLR-3-31 type connector
CH 1 mode ON/OFF switch (ON: CH 1 to All ch
Rated Output 4 channels: 500 W × 4 (100 V line)M4 screw terminal
Frequency Response 50 Hz – 20 kHz (-3 dB
Total Harmonic Distortion 0.1 % (1 kHz)
0.3 % (100 Hz – 20 kHz)
Protection Circuit Protection against excessive current flow due to overload unusual DC voltage output temperature rise at power amp. heat sink (100 ℃ (212 ゜F) or more) temperature rise at power supply heat sink (80 ℃ (176 ゜F) or more)
S/N Ratio 100 dB (A-weighted)
Crosstalk 70 dB (A-weighted)
Control/Monitor Control input: Power ON/OFF status of the individual channels photocoupler input
Monitor output: Power ON/OFF status of the individual channels Protection status of the individual channels photocoupler open collector output control current: 12 mA or less
Connector: RJ-45 connector × 2
Connection cable: Shielded Category 5 twisted pair cable for LAN (CAT5 STP)
Maximum cable distance: 600 m (656.17 yd)
LED Indicator Power (blue) × 1
Protect (red) × 4
Cooling Forced air cooling
Operating Temperature -10 ℃ to +40 ℃ (14 ゜F to 104 ゜F)
Operating Humidity 90 %RH or less (no condensation)
Finish Panel: Aluminum
Case: Plated steel sheet
Dimensions 482 (W) × 88.4 (H) × 404.2 (D) mm (18.98 × 3.48″ × 15.91)
Weight 9 kg (19.84 lb)
Accessory Power cord (2 m (6.56 ft))
SKU TOA-DA500FH Categories , , , ,

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