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

ESX Quantum QM-FOUR

The approximately palm-sized 2-channel mini power amplifier QUANTUM QM-TWO caused amazement right after the presentation among ESX fans and connoisseurs of the car hifi scene.

The small powerhouse with a whopping 240 watts RMS output was immediately traded as an insider tip. After last year’s improved V2 version with incredible 300 W RMS performance topped that again, ESX is now adding two more models in the QUANTUM QM class.

The powerful QM-FOUR power amplifier is now available for 4-channel applications, who want to drive a separate subwoofer, can now use the new monoblock QM-ONE. Both power bars deliver a whopping 360 watts RMS and are visually perfectly matched. Modern and efficient Class D technology is used in all models, combined with EPS®, top features and perfect sound characteristics.

The QM-ONE monoblock is not only visually the perfect play partner to match the QM-FOUR. If a separate woofer is also to be fired, its area of application is clearly defined. With a full 360 watts RMS at 2 Ω, sufficient steam is provided.

Features

• Efficient Class D Amplifier with ultra-compact dimensions
• Heavy die-cast Heatsink with perfect cooling characteristics
• Auto Turn-On Function
• High Level Inputs with Error Protection System (EPS®)
• Start/Stop Ready
• RCA Inputs & Outputs (via Molex)
• Clipping LED

Specifications

• 4-Channel Class D Mini Digital Amplifier
• 4 x 52/90 Watts RMS @ 4/2 Ω
• 2 x 180 Watts RMS @ 4 Ω bridged
• HPF/LPF 40 – 4000 Hz (CH1/2)
• HPF/LPF 40 – 4000 Hz (CH3/4)
• Bass Boost 0 / 6 / 12 dB (CH1/2)
• Bass Boost 0 / 6 / 12 dB (CH3/4)
• Input Selector 2CH/4CH
• Dimensions 216 x 39 x 84 mm
• Efficiency up to 86%