ESX QS-FOUR-ISO – 4 Channel Class D Ultra Compact Plug & Play ISO Amplifier
Produit disponible sous 6 jours.
SKU: QS-FOUR-ISO
Category: 4 Channel Amplifiers - Power and Clarity, Amplifiers and DSP, ESX, Home Page
Vendeur:ESX

ESX QS-FOUR-ISO – 4 Channel Class D Ultra Compact Plug & Play ISO Amplifier
Product presentation:
The ESX QS-FOUR-ISO amplifier is the ideal solution for boosting your factory audio system without modifying your vehicle's wiring. The successor to the highly acclaimed QS-TWO , this ISO version maintains an ultra-compact format (90 x 35 x 80 mm) while adding two additional channels , for a power of 4 x 60 Watts RMS .
Its ISO Plug & Play design allows direct integration into vehicles with an ISO connector , without the need for additional power cable runs. Thanks to its high efficiency (up to 90%) , it only consumes 5 to 10 A , which is perfectly suited to the original power supply.
The QS-FOUR-ISO drastically improves sound quality, often limited by the weak amplification of factory radios. In addition, it includes an RCA output for an active subwoofer, making it an ideal basis for a scalable system.
⚙️ Main Features
Specifications | Details |
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🔊 Type | 4-channel Class D digital amplifier |
📏 Dimensions | 90 x 35 x 80 mm |
⚡ RMS power | 4 x 35 / 45 / 60 W @ 4 / 3 / 2 Ω |
🔗 Bridged mode | 2 x 120 W RMS @ 4 Ω |
🎚️ Built-in filters | 2 x HPF / LPF @ 80 Hz |
💡 Technology | High efficiency Class D (up to 90%) |
🔁 High-level entries | With integrated EPS® protection |
🎛️ Inputs/outputs | Stereo cinch + output for active subwoofer |
🚗 Plug & Play ISO | Installation without additional power wiring |
🔊 Audio quality | THD+N < 0.007% at 5 W RMS, response up to 60 kHz |
⚙️ Features | Automatic ignition, Start/Stop compatible |
🧊 Cooling | Cast metal chassis with optimal heat dissipation |
🔎 Why choose ESX QS-FOUR-ISO?
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⚙️ Ultra compact format , perfect for installation behind the dashboard
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🔌 ISO Plug & Play wiring : no need to run a cable from the battery
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🔈 Greatly improves the sound of the original speakers
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🔊 Can power an active subwoofer or monoblock amplifier via RCA output
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🎵 Hi-Res audio quality , frequency up to 60 kHz
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🔧 Quick and invisible installation , ideal for modern vehicles
📦 Package contents
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1x ESX QS-FOUR-ISO Amplifier
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1x ISO Plug & Play Cable 60 cm
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1x RCA adapter (if included depending on version)
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1x User Manual
📥 Downloads

Shipping Policy
At Multison, we are committed to providing you with a fast, reliable and secure delivery service for all your in-car audio, video and multimedia products.
Delivery Zones
We deliver to mainland France and several European countries, directly from our warehouse in France.
Delivery Times
Delivery times vary depending on the product and destination:
- Metropolitan France : Generally, 4 to 8 working days after order processing.
- Europe : Approximately 5-15 business days depending on destination and local shipping conditions.
Please note that delivery times are indicative and may vary depending on periods of high demand, such as holidays or sales.
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Returns
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- Return Period : You have 14 days from receipt of your order to make a return.
- Return Conditions : Items must be in their original condition, unused, and in their original packaging.
- Return Procedure : Please contact our customer service via our "We're here to help" page for return instructions. Return fees may apply depending on the circumstances.
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