Sound Express is an authorized dealer for Aunex.


Established in 2019, Aunex offers a wide variety of audiophile-grade amplifiers and other components. While Aunex is a newcomer to the market, its founders and design team are industry veterans with over 60 years of combined experience. The Aunex amplifier line uses new, high quality materials as well as circuit designs to achieve a more efficient and better-sounding amplifier. By prioritizing performance, reliability, and ease of installation, the team at Aunex has achieved a range of products that can satisfy the most discerning listeners. Simply "Audio For The Next Generation."


The AC line of amplifiers from Aunex is the best value in its class. They feature differential balanced inputs, bandpass capable crossovers, conformed coated PCB boards, and clipping indicator lights.


All the key features:

  • Conform coated PCB
  • Output clipping indicators
  • Differential balanced inputs
  • 4 layer PCB, SMD Technology
  • Heavy density aluminum extruded heatsink
  • Fully variable crossover 12dB / Octave
  • Auto-sensing high-level inputs
  • If high-level inputs are used, remote input becomes remote trigger output
  • 1x and 10x frequency multiplier (Bandpass crossover)
  • Dual-frequency potentiometer
  • Boost EQ fully variable - LP 18 dB @ 45hz
  • Boost EQ fully variable - HP 18 dB @ 12khz



  • 150 watts x 4 @ 4 ohm
  • 250 watts x 4 @ 2 ohm
  • 500 watts x 2 bridged @ 4 ohms
  • Frequency response 10hz-30khz
  • THD + Noise < 0.7%
  • S/N Ratio A-weighted > 100 dB
  • Efficiency @ 4 ohm: 85%
  • Dimensions: 2.0" x 11.3" x 6.2"


This item can be backordered.

Aunex AC1000.4D Four Channel

$370.00 Regular Price
$340.00Sale Price