Audison SR 4.300 - Compact 4-Channel Class-D Amplifier with 520 W RMS
The Audison SR 4.300 is a 4-channel Class D amplifier that delivers high power in a small footprint. It fits into modern vehicles, is easy to integrate, and maintains stable sound quality. Thanks to Hi-Level inputs, universal speaker simulation for OEM radios, and sophisticated filter options, you can cover everything from a front/rear setup to bridged subwoofer control. At Carhifi.shop, this provides you with a clean solution for powerful, space-saving car hi-fi installations.
Technical Highlights
- 4-channel Class D amplifier with a compact design
- Total RMS power: 520 W
- Flexible filters: High/low pass per channel pair (50–3,200 Hz, 12 dB/Oct.)
- OEM-friendly: Hi-Level inputs, universal speaker simulation, ART Auto-Turn-On
- Stable performance: THD 0.03 %, 100 dBA S/N, Damping factor 150
Power & Configuration
- Channels: 4
- Amplifier Class: D-Class
- Total Power (RMS): 520 W
- Minimum Impedance
- 4-channel: 2 Ω
- 3-channel: 2 Ω + 2 Ω + 4 Ω
- 2-channel: 4 Ω
- Output Power (RMS) @ 14.4 VDC, 1 % THD
- 4-Ch: 85 W x 4 (4 Ω)
- 4-Ch: 130 W x 4 (2 Ω)
- 3-Ch: 80 W x 2 (4 Ω) + 250 W x 1 (4 Ω)
- 3-Ch: 130 W x 2 (2 Ω) + 260 W x 1 (4 Ω)
- 2-Ch (bridged): 250 W x 2 (4 Ω)
- Adjustable Crossovers: Yes
Acoustic Performance
- Distortion (THD) @ 100 Hz, 4 Ω, 70 % rated power: 0.03 %
- Frequency Response: 10 Hz – 35 kHz
- Signal-to-Noise Ratio (A-weighted): 100 dBA
- Damping Factor: 150
- CEA Specifications
- Output Power @ 4 Ω, 1 % THD+N, 14.4 V: 75 W x 4
- Signal-to-Noise Ratio (ref. 1 W output): 82 dBA
Inputs, Filters & Control
- Input Types: Pre-In / Speaker-In
- Hi-Level Input: Yes | Low-Level Input: Yes | Digital Input: No
- Input Sensitivity
- Pre-In: 0.2 – 5 VRMS
- Speaker-In: 0.8 – 20 VRMS
- Filters & Routing
- PRE OUT: Full-Range (Input A)
- Channel A: Full / High-Pass 50 – 3,200 Hz @ 12 dB/Oct.
- Channel B: Low-Pass 50 – 3,200 Hz @ 12 dB/Oct.
- Channel C: Full / High-Pass 50 – 3,200 Hz @ 12 dB/Oct.
- Channel D: Low-Pass 50 – 3,200 Hz @ 12 dB/Oct.
- Channel Mono A/B: MONO IN (on/off): Yes
- Bass Boost Channel B: 0–12 dB
Power Supply & Control Functions
- Supply Voltage / Fuse: 11 – 15 VDC / 1 x 30 A
- Operating Voltage Power Supply: 6.5 – 17 VDC
- Idling Current: 1.6 A
- Idling Current in Switched Off State: 0.03 mA
- Current Consumption @ 14.4 VDC, 2 Ω, max. music power: 25 A
- Remote IN: 6.5 – 15 VDC (1 mA)
- Remote OUT: 6.5 – 15 VDC (150 mA)
- ART Auto-Turn-On (BTL speaker, selectable): 1.5 – 7 VDC
Dimensions & Weight
- Dimension A: 190 mm
- Dimension B: 160 mm
- Dimension C: 155 mm
- Dimension D: 135 mm
- Dimension E: 47.5 mm
- Weight: 1.56 kg
Installation & Compatibility
The SR 4.300 excels in both OEM and aftermarket systems. Its Hi-Level inputs allow direct connection to factory radios. The universal speaker simulation ensures trouble-free detection by OEM outputs. With ART, the amplifier automatically switches on and off. The flexible filter section enables front/rear setups, active operation, or bridging a channel pair for the subwoofer. This way, you get more control and power from your system – with minimal space requirements.
