Description

The DAP SI-4.700 is a compact and efficient 4-channel Class D power amplifier designed specifically for fixed installations. Delivering 4 x 700W RMS at 4 ohms from a single 1U rack unit, it is also capable of driving 2-ohm loads and operating in bridge mode for even higher output power. Engineered for high current and low-impedance applications, it features a universal switching power supply with active PFC for worldwide operation and optimal energy efficiency. With comprehensive protection circuitry and LED indicators for signal, clip, fault, and power, the SI-4.700 is a reliable choice for venues, conference systems, and distributed audio installations.

Features
4 x 700W RMS @ 4 ohms in a 1U rack space
2-ohm stable operation per channel
Bridgeable for increased output power
Universal switching power supply with active PFC (100–250V AC)
Selectable input sensitivity: 0.775 V or 32 dB gain
Stereo, mono, and bridge mode selection
Clip limiter, DC output, overload, short circuit, and thermal protection
Front-panel signal, clip, fault, and power LEDs
Rear-panel gain settings and volume controls per channel
Compact, lightweight design optimized for installation use
Rugged steel housing with powder-coated black finish

Specifications
Output Power
Output @ 4 ohms: 4 x 700W RMS
Stable @ 2 ohms: yes
Bridge mode: supported
Output modes: stereo, mono, bridge

Input & Output
Input sensitivity: switchable (0.775 V or 32 dB gain)
Output connectors: speaker terminals (model dependent)
Indicators: signal, clip, fault, power LEDs
Level control: per-channel volume knobs

Power & Protection
Power supply: universal SMPS with active PFC (100–250V AC, 50/60Hz)
Protections: clip limiter, DC protection, output overload, short-circuit, overheat, power attenuation

Mechanical
Dimensions (W x D x H): 483 x 296 x 45 mm
Installation depth (excluding connectors): 296 mm
Rack size: 19″, 1U
Housing: steel
Finish: black powder coating
Weight: 4.7 kg