Toa Electronics DA-250F – 4-Channel Digital Amplifier (4 x 250W @ 4 Ohms)

The DA-250F from Toa Electronics is a high-quality 1RU digital amplifier designed for installed applications. It offers four channels of input and output, with removable terminal block inputs and a screw terminal strip for outputs. In addition to standard four-channel operation, the unit can be set to bridge mode, giving the unit two high-power output channels. If desired, the first input channel signal can be routed to all four 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-250F to operate at 85 percent efficiency, so it consumes almost 1/3 less power than analog amplifiers.

Sleek, 1RU unit fits into any standard audio rack
Four channels of I/O, perfect for multiple zones
Selectable bridge mode provides two high-power outputs
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

Toa Electronics DA-250F Specs
Number of Channels 4
Power Rating 4 Ohms:
4 x 250 W
8 Ohms:
4 x 170 W
2 x 500 W Bridged
Performance
Frequency Response 20 Hz to 20 kHz ±1 dB
Input Sensitivity 1.23 V / +4 dB
0.24 V / -10 dB
Input Impedance 10 Kilohms (Balanced)
SNR 100 dB
THD 0.15% (1 kHz)
0.3% (Full Range)
Connectivity
I/O 4 x Block 3-Pin Input
4 x Barrier Strip Output
Power
AC Input Power 120 VAC, 50 / 60 Hz
Power Consumption 200 W (1/8 Power)
Physical
Display & Indicators 1 x Blue LED (Power)
4 x Green LED (Input)
4 x Yellow LED (Output)
4 x Red LED (Peak)
4 x Red LED (Protect)
Dimensions 19.0 x 1.7 x 15.7″ / 483.0 x 44.0 x 400.0 mm
Weight 14.5 lb / 6.6 kg
Packaging Info
Package Weight 18.08 lb
Box Dimensions (LxWxH) 23.23 x 22.44 x 3.54″