SKU: 60625817007

ESX QS-TWO - 2 Channel Nano Amplifier

Sale price$116.99 Regular price$129.99
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Description

ESX QS-TWO - 2 Channel Nano AmplifierSpecifications 2 Channel Class D Nano Digital Amplifier 2 x 52 95 Watts RMS @ 4 2 1 x 190 Watts RMS @ 4 bridged HPF LPF @ 80 Hz THD+N @ 5W RMS < 0,007% Frequency Range 10 Hz bis 60 kHz Dimensions 70 x 35 x 90 mm Efficiency up to 90% 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

Specifications

  • 2-Channel Class D Nano Digital Amplifier
  • 2 x 52/95 Watts RMS @ 4/2 Ω
  • 1 x 190 Watts RMS @ 4 Ω bridged
  • HPF/LPF @ 80 Hz
  • THD+N @ 5W/RMS < 0,007%
  • Frequency Range 10 Hz bis 60 kHz
  • Dimensions 70 x 35 x 90 mm
  • Efficiency up to 90%

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 (via Molex)
  • Stereo RCA Output for e.g. active Subwoofers
  • HPF/LPF switchable
  • Perfect for HD-Audio

With an impressive 2 x 95 watts RMS at 2 Ω, the little QUANTUM QS-TWO is anything but slim. On the contrary, it drives loudspeaker systems with 4, 3 or 2 Ω impedance without difficulty and remains very stable even under critical loads. With a mono bridge output of 190 watts RMS at 4 Ω, it can also elicit a lot of bass from subwoofers. Incidentally, it impresses with its high-end sound: thanks to the huge bandwidth of up to 60,000 Hz and a sensationally low distortion factor of <0.007% (THD + N @ 5W), the QS-TWO is way ahead.

ESX masters the construction of Class D power amplifiers so well that the QS-TWO can come up with a sensational efficiency of up to 90% and EMC interference-free. The modern technology saves electricity, relieves the vehicle's electrical system and protects the high-quality components from overheating. Thanks to the high degree of efficiency, no thick power cables need to be pulled. If you want it to be very easy, you can use the QS-TWO-ISO, which can be supplied via a pre-assembled ISO cable harness, e.g. can be connected behind the car radio.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 60625817007

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4.6 ★★★★★
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C
Cyndi
Birmingham, US
★★★★★ 5
Best money for a dog toy I've spent in a long time
Color: Blue
This interactive ball is small but packs a lot of fun and playtime for my dog's they go crazy every time we bring it out and turn it on, it lights up has several modes vibrates they love it will be purchasing amount for certain
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
A
AN
Charlottesville, US
★★★★★ 4
Fun, engaging dog toy that keeps pets entertained, but battery life could be better
Color: Blue
I’ve been using the ITEHZTO Interactive Dog Ball Automatic Dog Toy for my dog, and overall it’s been a great way to keep him active and engaged, especially when I’m busy or not able to play fetch. The different play modes are a nice feature, and the unpredictable movement really grabs his attention. It does a good job of encouraging exercise and mental stimulation. The USB-C charging is convenient, and I appreciate not having to mess with batteries. The size is also good for small to medium dogs, and it feels durable enough to handle regular play. The reason I’m giving 4 stars instead of 5 is that the battery life doesn’t last as long as I expected, especially when using the more active modes. Also, on harder flooring it can be a bit noisy as it bounces around. Overall, it’s a fun and useful interactive toy that my dog genuinely enjoys. With slightly longer battery life and quieter operation, it would easily be a 5-star product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
N
nubbles
West Palm Beach, US
★★★★★ 5
Great stimulation for a 'busy' pup
Color: Blue, Color: Blue
I’ll admit I was a little skeptical since my German Shepherd is well over the recommended weight limit for this ball, but it’s been a huge hit. Even though it’s technically for smaller breeds, it has held up remarkably well so far. I’ve mostly kept it on the gentle mode, and that’s more than enough to grab her attention and keep her occupied for quite a while. The design is actually much tougher than the warnings suggest; the two halves screw together so securely that she hasn't been able to pry it open, which is impressive for a tough chewer. It’s been a great way to keep her mentally engaged indoors without worrying about the toy falling apart immediately.
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Reviewed in the United States on May 2, 2026
C
customer reviewer
Omaha, US
★★★★★ 4
Recommended for Small, Mellower Dogs, not the destructive, chewy kind
Color: Blue, Color: Blue
My dog loved this ball, maybe a little too much. He attacked it like it was a wild animal and left teeth marks and tears in the outer plastic. I decided to give it to my cats instead, who initially were very intrigued by it. The buff kitty even chirped to see it. He would roll around with it as it vibrated and hopped, but after a while he wasn’t that interested. I think I can get them to play with it if I don’t use it with them every day, maybe wait a few weeks between playtimes. Perhaps it is a little too large for cats. My dog, who is less than 30 lbs., might be too big for it, or maybe just his mouth is, or maybe because he’s a Boston Terrier and he always feels like it’s his duty to destroy all toys (all my Bostons were like that). But I don’t think I will let him have it again. Maybe a toy breed or puppy might be more of the appropriate size for this ball. Or someone who isn’t as destructive. The instructions are almost unreadable because the text is so small. I couldn’t understand what I was supposed to do with the “installation process.” I did figure out how to turn it on and off by myself, however. There are four modes when it is on: gentle, normal, active, and lighting only (no vibration). As a human, it is a fun thing to watch, even if it is just for the light show.
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Reviewed in the United States on May 6, 2026
D
Verified Purchase
Dfg
Lowell, US
★★★★★ 5
Good to for korgi
Dog loves it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

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