Vehicle Search
Quantum QM500.4
Technical Highlights
- RMS output power of up to 500 watts, impedance at 4/2 Ω.
- Effective efficiency up to 89%, advanced Class D technology.
- Compact aluminum heatsink, integrated MOSFET PWM power supply.
- More technical details
Availability for pickups could not be loaded.
Shipping cost calculator
Shipping cost calculator
Rob
Max
Unsure if this product fits your car?
We help you – quickly, personally, and without obligation.
Fill out the form and we'll send you a personalised offer
This product is not universally compatible. Send us your vehicle details and we will check fitment for your model free of charge.
Quantum QM500.4 by ESX
ESX Quantum QM500.4 is a 4-Channel Amplifier with Class D technology and an efficiency of up to 89 percent. The RMS output power is 500 watts, with 4 x 80 watts RMS at 4 ohms and 4 x 125 watts RMS at 2 ohms, as well as 2 x 250 watts RMS bridged at 4 ohms. The compact housing with aluminum heat sink and aluminum die-cast side panels measures 190 x 35 x 112 mm. High-level inputs with Error Protection System, Auto Turn-On, and Start/Stop Ready are integrated. A MOSFET-PWM power supply and a 3-fold protection circuit are included. RCA/Cinch and high-level inputs via wiring harness, as well as a compact bass cable remote control, are included. Filter options include HP 50–5000 Hz for CH1/2, HP 10–500 Hz and LP 50–5000 Hz for CH3/4, plus bandpass mode and copy mode CH3/4 > CH1/2.
- 4-Channel Amplifier
- Advanced Class D technology with very high efficiency
- Selected and audiophile-tuned components
- Compact aluminum heat sink and aluminum die-cast side panels
- High-level inputs with Error Protection System
- Auto Turn-On, Start/Stop Ready
- MOSFET-PWM power supply, 3-fold protection circuit
- Compact bass cable remote control
- RCA/Cinch and high-level inputs via wiring harness
- Dimensions 190 x 35 x 112 mm
- 500 watts RMS output power
- 4 x 80 watts RMS @ 4 Ω
- 4 x 125 watts RMS @ 2 Ω
- 2 x 250 watts RMS @ 4 Ω bridged
- HP 50–5000 Hz (CH1/2)
- HP 10–500 Hz (CH3/4)
- LP 50–5000 Hz (CH3/4)
- Bandpass mode
- Copy mode CH3/4 > CH1/2
- Efficiency up to 89 percent

