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TOA DA-250F CU 4-Channel Class D Rack Power Amplifier

TOA DA-250F CU 4-Channel Class D Rack Power Amplifier

SoundPro Item: 52095 | Part Number: DA-250F CU

$1,970.00
$2,439.00 $1,970.00
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MSRP: $2,439.00 | MAP: $1,970.00

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  • Four Independent Channel Power Supplies Prevent Cross-Channel Faults
  • Switchable Bridge Mode Doubles Per-Pair Output For Flexible Speaker Configurations
  • Tamper-Proof Control Covers Protect System Settings In Public Installations
  • CH1 Broadcast Switch Enables Single-Input Drive To All Channels
  • Onboard Protection Circuitry Guards Against Overcurrent, Short Circuit, And Thermal Events
  • Per-Channel LED Metering Provides Immediate Visual Diagnostics
  • Low-Noise Constant-Speed Fans Support Continuous Operation In Noise-Sensitive Environments
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The TOA DA-250F CU is a four-channel Class D power amplifier built for permanent installation and commercial audio applications where rack space, weight, and power efficiency are critical constraints. Delivering 250 W per channel into 4 ohms or 500 W bridged per channel pair into 8 ohms, it covers a wide range of loudspeaker configurations without requiring additional rack units. Each channel runs from its own independent power supply, which means a fault or overload on one channel does not degrade performance on others, a meaningful advantage in multi-zone paging, background music, and distributed audio installations.

Integrators working in education facilities, houses of worship, corporate AV, and hospitality environments will find the DA-250F CU directly suited to their needs. The switching power supply keeps weight at 6.6 kg and power consumption low relative to output, simplifying both shipping and physical installation. Tamper-proof control covers and a CH1 broadcast mode switch allow system designers to lock in a configuration and protect it from accidental adjustment by non-technical staff. Forced air cooling via low-noise constant-speed fans maintains thermal stability across continuous operation, while onboard protection circuits guard against overcurrent, short circuit, DC offset, and thermal events at both the heatsink and interior chassis level.

Compared to conventional linear amplifiers in the same output class, the DA-250F CU occupies a single rack unit and draws significantly less idle power, making it practical in dense rack builds where heat management is a concern. Per-channel LED metering for input, output, peak, and protect status gives technicians immediate visual diagnostics without connecting external test equipment.

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Specifications

Electrical
Power Source
120 V AC, 50/60 Hz
Power Consumption
200 W (UL/CSA), 1300 W (rated output 4 Ω x 4), 850 W (rated output 8 Ω x 4)
Amplification System
Class D
Audio
Rated Output (4-Channel)
250 W x 4 (4 Ω), 170 W x 4 (8 Ω)
Rated Output (Bridged)
500 W x 2 (8 Ω)
Frequency Response
20 - 20,000 Hz (±1 dB)
Total Harmonic Distortion
0.1% (1 kHz), 0.3% (20 - 20,000 Hz)
Signal to Noise Ratio
100 dB (A-weighted)
Crosstalk
70 dB (A-weighted)
Connectivity
Input
4 circuits, +4 dB (1.23 V), 10 kΩ, electronically-balanced, removable terminal block (3 pins)
Output Connector
M4 screw terminal, barrier spacing: 8.8 mm
Controls
CH1 Mode Switch
ON: CH 1 to All channels, OFF: Each channel independent
LED Indicators
Power
Blue x 1
Input
Green x 4
Output
Yellow x 4
Peak
Red x 4
Protect
Red x 4
Construction
Finish Panel
Aluminum, black, alumite
Finish Case
Plated steel sheet
Cooling
Forced air cooling (constant-speed fans)
Environmental
Operating Temperature
-10 °C to +40 °C (14 °F to 104 °F)
Operating Humidity
90% RH or less (no condensation)
Dimensions
Dimensions
482 (W) x 44 (H) x 401.8 (D) mm
Rack Size
1U
Weight
Weight
6.6 kg
Included Items
Included Accessories
Power cord (2 m) x1, Removable terminal plug (3 pins) x4, Tamper-proof cap x4

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