TOA / DA-250DH Digital Amplifier

The TOA DA-250DH is a high-quality two-channel digital power amplifier for high-impedance 100 series speakers, featuring a rated output of 250 W x 2 (40 Ω load) and a switching power supply. It is lightweight, compact, high-output, and highly efficient.

■High-Impedance Power Amplifier
■250W x 2

■Power Supply
AC 100V 50/60 Hz
■Amplification Method
Class D Amplification Method (Digital Amplifier)
■Power Consumption
600 W (at rated output, high-impedance 100V line, 40 Ω x 2)
120 W (According to the Electrical Appliance and Material Safety Act)
■Input
2 circuits, +4 dB* (1.23 V) (input level control knob at maximum)
10 kΩ, electronically balanced, detachable terminal block (3-pin), XLR-3-31 equivalent
CH1 Mode Switch (ON: PARALLEL, OFF: STEREO)
■Rated Output
2 channels: 250 W x 2 (high-impedance 100V line, 40 Ω), M4 screw terminals, barrier spacing 8.8 mm
■Frequency Response
50 Hz - 20 kHz (-3 dB, +1 dB)
■Total Harmonic Distortion
0.1% (1 kHz)
0.3% (100 Hz to 20 kHz)
■Protection Circuits
Overcurrent due to overload, short circuit, abnormal DC voltage output, temperature rise of power amplifier heat sink (above 100°C), temperature rise inside the device (above 80°C)
■Signal-to-Noise Ratio
100 dB (JIS-A)
■Crosstalk
70 dB (JIS-A)
■Indicators
Power (blue) x 1, Input (green) x 2, Output (yellow) x 2, Peak (red) x 2, Protect (red) x 2
■Cooling Method
Forced air cooling
■Operating Temperature Range
-10°C to +40°C
■Operating Humidity Range
90 % RH or less (no condensation)
■Finish
Panel: Aluminum, black (approximate Munsell N1.0 color), anodized
Case: Plated steel
■Dimensions
482 (W) x 44 (H) x 401.8 (D) mm
■Weight
5 kg
■Accessories
Power cord (with ground wire, 2 m)...1, Detachable terminal plug (3-pin)...2, Rack mounting screws (with washers)...4, Guide rail A...2, Guide rail A mounting screws...4, Guide rail B...2, Guide rail B mounting screws (with washers)...4
■Optional accessories
Isolation transformer: MT-251H