SKU: 89659508673

ESX QS-FOUR-ISO - 4 Channel Plug And Play Amplifier

Sale price$175.49 Regular price$194.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

ESX QS-FOUR-ISO - 4 Channel Plug And Play AmplifierWith an impressive 2 x 95 watts RMS at 2 , the little QUANTUM QS TWO is anything but slim. On the contrary, it drives loudspeaker systems with 4, 3 or 2 impedance without difficulty and remains very stable even under critical loads. With a mono bridge output of 190 watts RMS at 4 , 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

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.

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 for Front and Rear
  • Perfect for HD-Audio
  • ISO Plug+Play Wire Harness (60 cm)

Specifications

  • 4-Channel Class D Plug+Play Nano Digital Amplifier
  • 4 x 35/45/60 Watts RMS @ 4/3/2 Ω
  • 2 x 120 Watts RMS @ 4 Ω bridged
  • 2 x HPF/LPF @ 80 Hz
  • THD+N @ 5W/RMS < 0,007%
  • Frequency Range 10 Hz - 60 kHz
  • Dimensions 90 x 35 x 80 mm
  • Efficiency up to 90%

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: 89659508673

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 1963 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
Linda Miller
Battle Creek, US
★★★★★ 5
WOnderful book!
Format: Hardcover
I love this book ~ author provides a very intriguing process he has gone through and continues to go through to learn to understand and communicate with animals, particularly the wild ones. Very intriguing with down to earth, practical suggestions for how the reader can do the same. Really wonderful!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2025
E
Verified Purchase
EmilyH
Los Angeles, US
★★★★★ 5
Great trivia, perfect gift for history lovers!
Format: Paperback
Great range of trivia questions! Simple enough to enjoy but challenging enough to have fun. Super fun to read through with a friend or group, we actually used this as part of a game night and had a blast!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
J
Verified Purchase
Joey Christine
Carnegie, US
★★★★★ 5
Educational & Interesting Bathroom Reader
Format: Paperback
I bought this for my husband for Christmas given that he loves history. I figured it’d be a hit as a bathroom reader… I was right and it’s become a fixture right next to the toilet paper! He likes that it challenges him to think. Now there’s no need to take his phone into the bathroom!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
L
Verified Purchase
Lisa Clark
Charlottesville, US
★★★★★ 5
Great trivia!
Format: Paperback
This is a great read! Especially for history buffs. Great to get yourself ready for trivia for scholastic bowl! Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
D
Verified Purchase
David P.
Lowell, US
★★★★★ 4
BCE? No, it is BC!
Format: Paperback
I love history; there is a lot in this book I did not know. It is definitely a challenge and a great way to learn. I took off one star (considered taking off two) because the author uses the non-Christian term of BCE. I HATE seeing that instead of what it really is BC - before Christ! I wonder if he is an atheist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025

recommand products