ESX QM-FOUR Quantum 4-Channel Mini Class D Amplifier

The ESX QM-FOUR is an ultra-compact QUANTUM Series 4-channel Class D mini amplifier for space-conscious car audio upgrades.

It delivers 4 x 52 watts RMS at 4 ohm, 4 x 90 watts RMS at 2 ohm, or 2 x 180 watts RMS bridged at 4 ohm, with flexible filtering and high-level input support for modern installations.

Key features

• 4-channel Class D mini digital amplifier
• 4 x 52 / 90 watts RMS at 4 / 2 ohm
• 2 x 180 watts RMS bridged at 4 ohm
• High-pass and low-pass filters: 40 - 4000 Hz for CH1/2 and CH3/4
• Bass boost: 0 / 6 / 12 dB for CH1/2 and CH3/4
• 2CH / 4CH input selector
• RCA inputs and outputs via cable connector
• High level inputs with Error Protection System and auto turn-on
• Start/Stop Ready
• Clipping LED
• Dimensions: 216 x 39 x 84 mm
• Efficiency up to 86%