Audio Control A600.4 ALTITUDE 4-CHANNEL AMPLIFIER

The AudioControl A600.4 Altitude 4-channel amplifier is a high-efficiency Class D four-channel power unit built for modern vehicles, including start-stop and EV platforms, with an anodized matte grey aluminum chassis for superior heat dissipation.

• Rated power output: 100W x 4 @ 4Ω, 150W x 4 @ 2Ω, 300W @ 4Ω bridged — real-world headroom for four channels or a bridged mono sub with solid efficiency and control.
• Valet Mode: Limits maximum volume to 25% when activated, providing a safeguard against unintended loud playback while the vehicle is unattended.
• EV/Start-Stop compatibility: EV compliant up to 17V, ensuring reliable operation in vehicles with start-stop systems and higher-voltage environments.
• ParaBASS Low Frequency Contouring: Bass shaping to tailor low-end response for listener preference and installation acoustics.
• Optional Remote Level Control (ACR-1): Adds dash-mounted adjustment for precise front/rear balance and calibration without reaching for the amp.
• Premium power electronics and build: Anodized chassis, premium toroidal transformer, 500V Class X2 capacitors, low ESR capacitors, precision potentiometers, and HEXFET MOSFETs delivering efficient, reliable power.
• Inputs/Outputs: 4 Preamp inputs, 6 V max line-level, 20 V max speaker-level inputs, with 4-channel output and bridged capability for flexible system design.

The A600.4 is designed for four-channel front-stage systems or for bridging two channels to drive a high-power mono sub. It pairs well with AudioControl’s PNW speakers and Space or Spike subwoofers to deliver clean, uninterrupted power with precise control. In a modern install, its Valet Mode, Start-Stop/EV compatibility, ParaBASS contouring, and optional remote control provide practical, tunable protection and flexibility, while the rugged aluminum chassis and premium internal components help maintain performance under demanding listening conditions.