SKU: 58286850823

ESX QL800.4 - 4 Channel Amplifier

Sale price$117.00 Regular price$130.00
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  • USA
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

ESX QL800.4 - 4 Channel AmplifierSpecifications 4 Channel Class D Digital Amplifier 4 x 125 200 Watts RMS @ 4 2 2 x 400 Watts RMS @ 4 bridged HPF 50 5000 Hz (CH1 2) HPF 10 500 Hz (CH3 4) LPF 50 5000 Hz (CH3 4) Copy Mode CH3 4 > CH1 2 Bass Boost 0 12 dB Bandpass Function Input Selector Dimensions 226 x 43 x 120 mm Efficiency up to 86% Features Advanced Class D Technology with very high Efficiency Selected and audiophile tuned Components Massive Aluminum Heatsink Heavy lateral Die cast

Specifications

  • 4-Channel Class D Digital Amplifier
  • 4 x 125/200 Watts RMS @ 4/2 Ω
  • 2 x 400 Watts RMS @ 4 Ω bridged
  • HPF 50-5000 Hz (CH1/2)
  • HPF 10-500 Hz (CH3/4)
  • LPF 50-5000 Hz (CH3/4)
  • Copy Mode CH3/4 > CH1/2
  • Bass Boost 0-12 dB
  • Bandpass Function
  • Input Selector
  • Dimensions 226 x 43 x 120 mm
  • Efficiency up to 86%

Features

  • Advanced Class D Technology with very high Efficiency
  • Selected and audiophile tuned Components
  • Massive Aluminum Heatsink
  • Heavy 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
  • Compact Bass Remote Controller

The QUANTUM QL amplifiers in the ESX Portfolio are technically the small siblings of the QUANTUM QE models. Ideally, they can be used where the installation space is very tight. They are also emission-free and, like the large QE models, have the finest Class D technology on board, which leaves nothing to be desired in terms of performance, sound quality and setting options. The QL models are also coming with the space-saving 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:
  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: 58286850823

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4.2 ★★★★★
Based on 9 reviews
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A
Verified Purchase
Abdoulaye Diawara
Battle Creek, US
★★★★★ 5
Good
Color: Black, Size: Upgraded Base-1 Panel
It’s goood
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
T
Verified Purchase
Tammy Duncan
Natrona Heights, US
★★★★★ 4
It’s ok.
Color: Beige, Size: Upgraded Base-4 Panel
It works, but not a great product. The cloth is super thin, so do not expect to use it to block noise. Wants to bent and tilt with little effort to make it so. Will not stand straight. It is a good color though.
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Reviewed in the United States on September 24, 2025
J
Verified Purchase
Jeannette Jaquish
Natrona Heights, US
★★★★★ 3
Too Short & Skewed Foot. Easy Build & Good Material.
Color: Black, Size: Upgraded Base-1 Panel, Color: Black, Size: Upgraded Base-1 Panel
The 3 partitions I purchased were of good material but were shorter than described and the "feet" on one end of all 3 partitions was skewed a few degrees so I cannot butt them together side by side. PHOTO #1: you see me who is 63.5 inches in my shoes standing next to the 72 inch described partition minus the wheels so it is fair to say it should be 70 inches. But even so, 70 inches minus 63.5 equals 6.5 inches that should be above my head and should not include the tip of the pole and a 6 inch gap below. PHOTO #2: shows the gap when a 90 degree good end is butted against the skewed end. Good material and easy construction but just make it taller and fix the jig that skews the bottom bracket weld.
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Reviewed in the United States on August 19, 2025
R
Verified Purchase
RogueVikingQueen
Omaha, US
★★★★★ 5
Great for “pop up home office”
Color: Grey, Size: Upgraded Base-4 Panel
If you need a space for a video conference in a hurry or to make a private corner for a kiddo to nap in this is a perfect divider that blocks light and separates spaces. It was easy to put together and collapses down to a flat panel for easy storage out of the way.
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Reviewed in the United States on May 23, 2024
W
Verified Purchase
Wesley
Dallas, US
★★★★★ 1
It’s a hard no from me
Color: Black, Size: Upgraded Base-1 Panel
I ordered two of these black, single screen panels several months ago. I ordered an additional four I needed a few days ago so I would have the total of 6 that I ended up needing. I did so by clicking on my past order (2 screens) item page and simply placed my recent order for 4 more. Two of the six screens have bolts that don’t fully screw down, such that one of each panel’s four points where the screen attaches to the two legs isn’t fully screwed down and flush. As a result, the screen doesn’t stay entirely vertical -It’s warped askew. Also, 3 of the six screens are different heights than the other 3. It’s clear to me that this company has ZERO QUALITY CONTROL, as there’s not anything that is even adjustable on these screens that leaves room for user error. Additionally, there are four black rubber circles that come in the “parts/screws” bag that don’t have corresponding installation instructions in the instruction manual. Just spend a little more and go with a better quality product somewhere else.
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Reviewed in the United States on March 1, 2025

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