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AI-Sonic  |  SKU: S3-A150.4

AI-Sonic S3-A150.4 – 4-Channel SQ Amplifier 4 x 260 WRMS 2 Ohm

€599.00
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The Sound Auto Concept Team

Description

Four channels at the service of natural sound

Designed in Finland by AI-Group, the AI-Sonic S3-A150.4 combines 4-channel SQ amplification with SCB technology to automatically adapt the bias of its power stage to operating conditions.

4 x 260 W RMS
At 2 Ω at 14.4 V
2 x 520 W RMS
In bridged mode at 4 Ω
SCB
Intelligent bias

Highlights

  • Four SQ channels
    Pure and natural reproduction for demanding in-car hi-fi installations.
  • SCB control
    The bias follows the load, signal, and temperature in real time.
  • Optimized efficiency
    Improved thermal management without compromising sound quality.
  • Integrated filtering
    High-pass and low-pass filters from 50 to 500 Hz, with optional S2-BASS KNOB control.

Description

The S3-A150.4 is designed for automotive systems where reproduction accuracy is just as important as available power. Its design combines high-end components and technical solutions intended to maintain clear and natural reproduction in varying operating conditions.

Available at Sound Auto Concept, this amplifier uses SCB technology to monitor the load, signal level, and temperature. The bias of the power stage is automatically adjusted, without manual adjustment or calibration, to optimize distortion, efficiency, and thermal management.

  • 4-channel or 2-channel bridged configuration depending on the intended loads.
  • Minimum stable load: 2 Ω per channel or 4 Ω in bridged mode.
  • High-pass, full-range, or low-pass selection.
  • Compatible and optional S2-BASS KNOB level control.
  • Sold individually.

Technical specifications

Feature Value
Brand / model AI-Sonic S3-A150.4
Design Finland, by AI-Group
Type 4-channel SQ amplifier
Power supply 10 to 16 V
RMS power at 2 Ω at 14.4 V 4 x 260 W
RMS power at 4 Ω at 14.4 V 4 x 260 W according to the provided source, to be confirmed
Bridged power at 4 Ω 2 x 520 W RMS
Bridged mode at 2 Ω Not applicable; minimum bridged load: 4 Ω
Minimum stable load 2 Ω stereo / 4 Ω bridged mono
Bias SCB, automatic real-time optimization
Total harmonic distortion 0.05 %
Frequency response Source: "10-50 kHz", lower limit to be confirmed
A-weighted signal-to-noise ratio ≥ 100 dB
Input sensitivity 0.5 to 8 V
Input impedance 6 kΩ
Low-pass filter 50 to 500 Hz
High-pass filter 50 to 500 Hz
Cutoff slope 12 dB/octave
Filtering modes High-pass / full-range / low-pass
Level control Optional S2-BASS KNOB
Maximum accepted ground / +12 V section 20 mm² / 20 mm²
Maximum accepted REM 2.5 mm²
Maximum accepted speaker cable section 2.5 mm²
Dimensions W x H x D 409 x 50.3 x 215 mm
Packaging 1 piece
EAN 6430042126323

Why choose it

  • To build a hi-fi system with four channels of amplification.
  • To benefit from automatically optimized bias during listening.
  • To have a 4 Ω bridged configuration.
  • To adapt the frequency range using the integrated filters.

⚠️ IMPORTANT - INSTALLATION: It is IMPERATIVE to connect this amplifier to the impedance recommended by the manufacturer and to use the recommended cable size. For amplifiers over 2000 W RMS, the vehicle's original battery is no longer sufficient. It is strongly recommended to adapt the electrical supply (additional battery, upgraded alternator) to the amplifier's consumption to avoid any risk of failure and ensure optimal performance. CAUTION: Any voltage drop below 12 V can damage the product.

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AI-Sonic

AI-Sonic S3-A150.4 – 4-Channel SQ Amplifier 4 x 260 WRMS 2 Ohm

€599.00

Four channels at the service of natural sound

Designed in Finland by AI-Group, the AI-Sonic S3-A150.4 combines 4-channel SQ amplification with SCB technology to automatically adapt the bias of its power stage to operating conditions.

4 x 260 W RMS
At 2 Ω at 14.4 V
2 x 520 W RMS
In bridged mode at 4 Ω
SCB
Intelligent bias

Highlights

  • Four SQ channels
    Pure and natural reproduction for demanding in-car hi-fi installations.
  • SCB control
    The bias follows the load, signal, and temperature in real time.
  • Optimized efficiency
    Improved thermal management without compromising sound quality.
  • Integrated filtering
    High-pass and low-pass filters from 50 to 500 Hz, with optional S2-BASS KNOB control.

Description

The S3-A150.4 is designed for automotive systems where reproduction accuracy is just as important as available power. Its design combines high-end components and technical solutions intended to maintain clear and natural reproduction in varying operating conditions.

Available at Sound Auto Concept, this amplifier uses SCB technology to monitor the load, signal level, and temperature. The bias of the power stage is automatically adjusted, without manual adjustment or calibration, to optimize distortion, efficiency, and thermal management.

  • 4-channel or 2-channel bridged configuration depending on the intended loads.
  • Minimum stable load: 2 Ω per channel or 4 Ω in bridged mode.
  • High-pass, full-range, or low-pass selection.
  • Compatible and optional S2-BASS KNOB level control.
  • Sold individually.

Technical specifications

Feature Value
Brand / model AI-Sonic S3-A150.4
Design Finland, by AI-Group
Type 4-channel SQ amplifier
Power supply 10 to 16 V
RMS power at 2 Ω at 14.4 V 4 x 260 W
RMS power at 4 Ω at 14.4 V 4 x 260 W according to the provided source, to be confirmed
Bridged power at 4 Ω 2 x 520 W RMS
Bridged mode at 2 Ω Not applicable; minimum bridged load: 4 Ω
Minimum stable load 2 Ω stereo / 4 Ω bridged mono
Bias SCB, automatic real-time optimization
Total harmonic distortion 0.05 %
Frequency response Source: "10-50 kHz", lower limit to be confirmed
A-weighted signal-to-noise ratio ≥ 100 dB
Input sensitivity 0.5 to 8 V
Input impedance 6 kΩ
Low-pass filter 50 to 500 Hz
High-pass filter 50 to 500 Hz
Cutoff slope 12 dB/octave
Filtering modes High-pass / full-range / low-pass
Level control Optional S2-BASS KNOB
Maximum accepted ground / +12 V section 20 mm² / 20 mm²
Maximum accepted REM 2.5 mm²
Maximum accepted speaker cable section 2.5 mm²
Dimensions W x H x D 409 x 50.3 x 215 mm
Packaging 1 piece
EAN 6430042126323

Why choose it

  • To build a hi-fi system with four channels of amplification.
  • To benefit from automatically optimized bias during listening.
  • To have a 4 Ω bridged configuration.
  • To adapt the frequency range using the integrated filters.

⚠️ IMPORTANT - INSTALLATION: It is IMPERATIVE to connect this amplifier to the impedance recommended by the manufacturer and to use the recommended cable size. For amplifiers over 2000 W RMS, the vehicle's original battery is no longer sufficient. It is strongly recommended to adapt the electrical supply (additional battery, upgraded alternator) to the amplifier's consumption to avoid any risk of failure and ensure optimal performance. CAUTION: Any voltage drop below 12 V can damage the product.

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