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Alpine S-Series S-A55V 5-Channel Power Amplifier

SKU: ME28335 Part Number. S-A55V
The all-new S-Series amplifiers packs a real punch with even more performance and value to you. Experience hard hitting bass and long hours of limitless play with the S-A55V 5-channel amplifier.
4 payments of $142.25 with
Suitable for All
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    These amplifiers offer great value with over 20% more power through increased watt handling. The exceptional strength and resistance is supported by optimising a heat thermal management processor to ensure exceptional reliability so you can enjoy your music with the bass cranked up for hours on end without any power shutdown.

    All Digital Design

    The all-new S-Series utilise Alpine’s advanced digital design which unlike a typical Class-D amplifier circuit adds all-digital dual post-filter feedback loop for unmatched accuracy and control, while minimising internal noise.

    Thermal Protection

    Along with Alpine’s new intelligent amplifier platform, the new S-Series amplifiers feature an improved heat sink and protection circuit design that eliminates thermal shut-down, for dependable music playback.

    One-sided Cable Terminals

    The speaker and power cable terminals are conveniently located on the left hand side of the amplifier providing an easy and clean installation. The power cable terminals accept heavy gauge cables.

    Low/High-Power Speaker Signal Inputs

    The S-Series amplifiers are equipped with low-level RCA inputs, which can also accept high-level speaker signal inputs. This allows for installation of the R-Series amplifiers into virtually any aftermarket or OEM factory audio system.

    Control Your Subwoofer

    Conveniently control your subwoofer directly from the dash with the optional RUX-KNOB.2 remote bass knob controller. This accessory is also applicable for the S-A32F for when channels 3 and 4 are bridged.

    High-Pass / Low-Pass Filter

    With the High-Pass and Low-Pass filter you can assign the amplification channel to be used for door speakers or a subwoofer. You can then adjust the cut-off frequency for more precise tuning.



    • Terminal Layout: One side
    • Small footprint for easy installation
    • Screw terminals (for speaker and power cables)
    • Heavy gauge power terminals (AWG 4)


    • Amplifier Type: Class-D (Digital)
    • Channel Design: 5/4/3 Channel
    • Thermal Management Control
    • Top Mounted LED Power/Status Indicator
    • Speaker Level Input with remote turn on
    • Crossover: Adjustable Low-pass (LPF) / High-pass Filter (HPF)
    • Gain Control: Adjustable
    • Bass EQ (subwoofer channel)
    • Bass Control: Remote Bass Control (RUX-KNOB.2) Ready

    Max Power Output Ratings
    Total Max Power: 1100W
    RMS Power Ratings
    Per Channel into 2 Ohms, 14.4V (?1%THD+N): 4 x 60W + 1 x 300W
    Per Channel into 4 Ohms, 14.4V (?1%THD+N): 4 x 40W + 1 x 200W
    Bridged into 4 Ohms, 14.4V (?1%THD+N): 2 x 120W
    Sound Tuning
    Crossover: Variable LPF, 50-400Hz (-12dB/oct )
    Crossover: Variable HPF, 50-400Hz (-12dB/oct )
    Power Requirements: 14.4 V.DC (9 � 16 V allowable)
    Input Sensitivity (RCA Input): Hi: 0.5 � 10 V Lo: 0.2 � 4.0 V
    High Level Input with automatic power on
    Cable size: Power Cable AWG 4, SPK Cable AWG 12
    Frequency Response (+0, -3dB: 1W into 4 ohms) for CH-1/2/3/4: 10Hz � 30kHz
    Frequency Response (+0, -3dB: 1W into 4 ohms) for CH-5: 10Hz � 400Hz
    THD+N (@ 10W into 4 ohms): <0.03%
    THD+N (@ 50W into 4 ohms): <0.07%
    Damping Factor: Channel 1/2/3/4: >100, Channel 5: >750
    Signal to Noise (@ 50 Watts into 4 Ohms): >98dB
    Weight: 2.9 kg
    Heat Sink (WxHxD) mm: 286 x 58 x 204

    Alpine S-Series S-A55V 5-Channel Power Amplifier