Alpine X-A90M

Alpine X series Mono Black Amplifier 900w RMS @ 2 OHM's. Perfect compliment to the Alpine X-A70F Hi-Res Audio Amplifier.

Sound garage, your premium Alpine Car Stereo Specialist.




Alpine X-A90M

X-Series Mono Amplifier

The X-Series amplifiers allows your music to stay faithful to the original recording with realism that puts you in the centre of the performance.

The X-Series amplifiers set the industry benchmark with an all-new and advanced digital architecture to achieve high-resolution sound with unprecedented purity, accuracy and power efficiency. Their sleek and stylish compact design incorporates an innovative aluminium heat sink with a bespoke air-flow system which keeps the amplifier cool and maintains performance at its peak for incredibly high level power output and no-shut down operation. The X-Series amps are designed for true Hi-Res Audio playback by featuring a extended frequency range from 10Hz ~ 60kHz in the full range amplifiers. 

Furthermore, X-Series have unmatched staying power with a high damping factor for unparalleled control coupled with virtually zero distortion. This ensures extremely accurate low frequency output for bass at its best and the highest sound quality.

Cast Aluminium Heat Sink

Smart Installation

The Alpine X-A90M X-Series Amplifier can perform at it's peak power levels for a large period of time due to the chassis being a solid cast aluminium heat sink. The newly designed heat sink allows for hot air to rise out from the top, which causes a vacuum that draws in cool air from below. This provides thermal control for an uninterrupted listening experience. Alpine has completely redesigned the speaker terminal connectors on the Alpine X-A90M X-Series amplifier. This ensures a very compact design that allows clean and simple installation with lossless connectivity. With the intention of delivering high performance these connectors play a vital role in the stability and failsafe operation of the amplifier.

Alpine X-A90M - Features


  • Connectors: Redesigned Speaker Terminals for Easy Installation
  • Terminal Layout: One-Sided
  • Mounting Design: Easy Stacking and Clean-look installation


  • Built-in Variable High/Low Pass Filter
  • Variable Subsonic Filter (Mono Channel)
  • Bass EQ
  • Aluminium Heat Sink
  • All-new SIERRA Digital Design
  • Remote Sensing
  • Remote Level Control with Optional RUX-KNOB or RUX-KNOB.2
  • RCA Speaker Connection (Optional KCE-SP2R)

Alpine X-A90M - Specifications

RMS Continuous Power (at 14.4 V)

  • 900W RMS x 1 [2Ω@14.4V]
  • 600W RMS x 1 [4Ω@14.4V]
  • THD+N (Reference: 10W / rated power into 4 ohms): 0.02%
  • S/N Ratio: (IHF A Weighted, Reference: rated power into 4 ohms): >107 dBA
  • S/N Ratio: (IHF A Weighted, Reference: 1 W into 4 ohms): >83 dBA
  • Input Impedance: 10k ohms
  • Frequency Response (Reference: 1 W into 4 ohms):  8Hz – 400 kHz
  • Damping Factor (Reference: 10 W into 4 ohms at 100Hz): >1,500
  • Preamp Output: 4V Max


  • Width: 297.0 mm
  • Height: 50.8 mm
  • Depth: 192.0 mm
  • Weight: 3.2 kg


Sound Garage your Alpine Car Stereo Specialist and Installation Centre in the Northern Suburbs

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