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Description
ESX QM500.4 - 4 Channel AmplifierSpecifications 4 Channel Class D Mini Digital Amplifier 4 x 80 125 Watts RMS @ 4 2 2 x 250 Watts RMS @ 4 bridged HPF 50 5000 Hz (CH1 2) HPF 10 500 Hz (CH3 4) LPF 50 5000 Hz (CH3 4) Copy Modus CH3 4 > CH1 2 Bandpass Mode Dimensions 220 x 51 x 362 mm Efficiency up to 83% Features Advanced Class D Technology with very high Efficiency Selected and audiophile tuned Components Compact Aluminum Heatsink and lateral Die cast Parts High Level Inputs with Error
Specifications
- 4-Channel Class D Mini Digital Amplifier
- 4 x 80/125 Watts RMS @ 4/2 Ω
- 2 x 250 Watts RMS @ 4 Ω bridged
- HPF 50-5000 Hz (CH1/2)
- HPF 10-500 Hz (CH3/4)
- LPF 50-5000 Hz (CH3/4)
- Copy-Modus CH3/4 > CH1/2
- Bandpass Mode
- Dimensions 220 x 51 x 362 mm
- Efficiency up to 83%
Features
- Advanced Class D Technology with very high Efficiency
- Selected and audiophile tuned Components
- Compact Aluminum Heatsink and lateral Die-cast Parts
- High Level Inputs with Error Protection System (EPS)
- Auto Turn-On Function
- Start/Stop Ready
- MOSFET PWM Power Supply
- 3-Way Protection Circuit
- RCA & High Level Inputs (via Molex)
- Compact Bass Remote Controller
Digital amplifier power has never been more compact and affordable: With a size of just 190 x 35 x 102 mm, the three new ESX QUANTUM QM miniature power plants are convincing all along the line. The QM amps offer state-of-the-art technology in a very small space and are all solidly constructed. All three amps are based on the somewhat larger sibling models of the ESX QUANTUM QL series, only a bit more compact and much easier to install. Thanks to the high level inputs including EPS and the automatic turn-on function, they are also perfectly suited for integration in factory sound systems. Each model is also equipped with a compact bass level remote control.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Works great
Color: Grey
Watch looks great and works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
Calidad y estilo
Color: Grey
Está muy bonito y queda muy elegante para todas las ocasiones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
★★★★★ 4
Caution
Color: Grey
stoped working after 2 weeks. Had to send it to swatch group to get it fixed
Had to wait for more than a month to get it back
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Reviewed in the United States on October 25, 2025
★★★★★ 5
007 watch
Color: Grey
The Omega version cost $11.300, this Pagani version cost me $124. What can I say ? Whatch looks great, comfortable, I'm gonna buy another one to my brother.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
Solid all-around watch
Color: Grey
I was looking for something that I could wear just about anywhere. I wouldn't wear this to the gym, but it looks good in casual, work, elevated, and even some dress environment. Black-tie, I might look for something a bit more elegant, but 95% of the time, this watch fits.
Keeps good time. I haven't witnessed a full 80 hour power reserve yet, but I also can't say that I ever needed that much. Lume is nice, just give it a chance to charge up.
I like this more than the PRX. It's a more classic look, I think PRX will look silly in a short time in comparison.
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Reviewed in the United States on May 4, 2023
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