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Black rectangular car amplifier with silver trim and visible cooling fins

WUQ

WUQ PX 1000.4 4-Channel 1000W Class A/B Car Amplifier Black

SKU CH-36QN-B85YG

Four-channel Class A/B car amplifier delivering 1000 watts with 250 watts per channel at 2 ohms, 125 watts at 4 ohms, and bridgeable to 5000 watts mono at 4 ohms

  • Product typeCar
  • Flexible system design with 4, 3, or 2-channel operation
  • Class A/B circuitry for improved audio performance
  • 1000W total power with 250W per channel at 2 Ohms
  • Daisy-chain amplifiers via preamp RCA outputs
  • Compact 12.6 by 10.8 by 3.7 inch chassis weighs 5.4 pounds

Four-Channel 1000W Amplifier

The WUQ PX 1000.4 is a Class A/B car amplifier built for multi-channel audio systems. It delivers 1000 watts of total power and can be configured for four, three, or two-channel operation. Preamp RCA outputs allow daisy-chaining additional amplifiers for expanded setups. Speaker-level inputs provide flexibility when connecting to factory or aftermarket head units.

Thermal Management

A pulse-width modulated power supply regulates energy flow to help control heat during normal playback. The slow unmute soft-start circuit prevents sudden current surges when the unit powers on. Variable high-pass filtering at 120 Hz directs only appropriate frequencies to connected speakers. At just 5.4 pounds and measuring 12.6 by 10.8 by 3.7 inches, the chassis fits tight mounting locations.

Sustained Load Behaviour

In continuous use the amplifier maintains its rated output of 250 watts per channel at 2 ohms or 125 watts per channel at 4 ohms. When bridged to two channels at 4 ohms it supplies 5000 watts across the pair. Class A/B topology keeps distortion low during extended listening sessions. The compact aluminium body dissipates heat without external fan noise.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $124.99
Pricier than about 85% of the 2,768 comparable items (median $21.99).

Specifications

Product
Product typeCar

Questions about this item

How do I install the PX 1000.4 and what step is often missed?

Mount the 12.6 by 10.8 by 3.7 inch chassis, run power and ground, then connect speaker wires or RCA cables; the step often missed is setting the variable high-pass filter at 120 Hz before powering up.

What maintenance or replacement will the amplifier need later?

The pulse-width modulated supply and Class A/B output stage have no user-serviceable parts; only the external fuse on the power lead may need replacement if it blows.

What limit appears first during sustained high-volume use?

Thermal protection engages before the 1000 W rating can be held continuously, so output drops until the heatsink cools.

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