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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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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
4.3 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Westie LOVES this toy
Color: U.S.A, Size: Medium
My pup (Westie) adores this toy. This is actually our second one. The ball itself is resistant but the straps will be obliterated. Would definitely recommend! Totally worth the price!
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Reviewed in the United States on May 11, 2026
★★★★★ 3
Not durable
Color: Black/White, Size: Large
If you have a dog who likes to pop things then this toy isn't it. Within 5 min she had this ball popped. It was made to sound like it was durable for this type of thing but it definitely is not so just be aware. Now if you have a dog who doesn't pop things easy then this would be a good toy
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Reviewed in the United States on May 15, 2026
★★★★★ 5
They last quite well, even out in weather.
Color: Black/White, Size: Medium
NY corgi loves these!
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Dog can't pop it!
Color: Black/White, Size: Medium
Great toy would buy again!
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Reviewed in the United States on November 17, 2025
★★★★★ 4
WHAT I LEARNED
Color: U.S.A, Size: Medium
i AM NOT SURE THAT 4 STARS IS A FAIR SCORE, MY DOG IS AN AGGRESSIVE CHEWER, NEEDLESS TO SAY WITHIN 2 DAYS ALL THE TABS WERE OFF, BUT THERE WERE NUBS LEFT AND SHE CAN USE THAT. HERE IS A WHAT NOT TO DO, BRING IT TO THE DOG PARK, THEY ALL HAVE A BLAST BUT IF YOUR A BULLY/PIT MIX AND DECIDE TO SINK THEIR TEETH INTO IT, IT DOES DEFLAT. LESSONS LEARNED STILL A FUN TOY.
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Reviewed in the United States on May 13, 2026