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The DA-550F from TOA Electronics is a high-quality, rack mountable four-channel digital amplifier. Designed for highly efficient operation, the DA-550F is capable of outputting 550W per channel at four Ohms. Each channel has an individual level control knob, and all input connections are via 3-pin removable terminal block. Output connections are made on a standard screw terminal strip.
The DA-550F has an internally settable high-pass filter, as well as built-in protection circuitry to protect against damage from overheating and overloads. Four front-panel air vents each offer removable dust filters for easy maintenance to ensure your amplifier keeps running smoothly. Bridged operation is available via simple push-button operation if desired.
Lightweight 2RU unit
Four removable terminal block inputs and four XLR inputs with front-panel level controls for each channel
Four outputs on a screw terminal strip
Built-in limiter and high pass filter
Efficient Class D circuitry
Low heat dissipation and power consumption
Protection circuitry prevents damage from overheating and overloads
Front panel LEDs for power, input, output, peak, and protect
Includes volume control caps to prevent unwanted level changes
In the Box
Toa Electronics DA-550F Four-Channel Digital Amplifier (550W Per Channel @ 4 Ohms)
Removable Terminal Plugs
Volume Control Caps
5-Year Limited Warranty
Table of Contents
4 x 550W (4 Ohms)
4 x 350W (8 Ohms)
2 x 1100W (8 Ohms Bridged)
+4dB (1.23V)/-10dB (0.24V) (Selectable with Inner Jumper)
10 kOhms, Electronically Balanced
Not Specified by Manufacturer
20Hz - 20kHz (-2, +1dB)
Total Harmonic Distortion (THD)
0.15% (20Hz - 20kHz)
4 x Removable 3-Pin Terminal Blocks
4 x XLR 3-Pin Connectors
1 x AC Power In
1 x M4 Screw Terminal Strip with 8 Terminals (2 Screw Terminals Per Channel)
Controls Front Panel
1 x On/Off Switch
4 x Input Volume Control Knobs
2 x Bridge On/Off Buttons
1 x Ch. 1 Mode On/Off Button
1 x Blue Power LED
4 x Green Input LEDs
4 x Yellow Output LEDs
4 x Red Peak LEDs
4 x Red Protect LEDs