UA660 - Stereo Amplifier


Stereo Amplifier

The UA Series 2U professional amplifiers have been engineered for reliability where full power is required for extended times in fixed installations or portable applications. The UA Series delivers extraordinary performance at unmatched value. 


  • Housed in a rugged, all-steel 2U chassis
  • Rear panel selection switch for Stereo, Parallel and Bridged modes, including Low-cut filter, Ground lift and Limiter switches
  • Operates within 8Ω and 4Ω loads
  • Innovative heatsink with front to back air flow for efficient cooling
  • Variable fan speed is automatically adjusted by temperature
  • Electronically balanced XLR inputs
  • Touch proof binding post and Speakon outputs
  • Precision indented level controls, power switch,
  • Protect, Peak and Signal LEDs indicators for each channel
  • Amplifier protection includes short circuit, excessive temperature, and DC on outputs


Rated Power (Stereo 8Ω)

2 x 330W
Rated Power (Stereo 4Ω)2 x 500W
Rated Power (Bridge 16Ω)660W
Rated Power (Bridge 8Ω)1000W
Rated Power (Parallel mono 8Ω)330W
Rated Power (Parallel mono 4Ω)500W
THD (@1kHz)<0.05%(10%Rated power)
Amplifier TypeClass H
S/N Ratio>108dB
Damping Factor>800 @ 8ohm/100Hz
Frequency Response (+0/-0.25dB)20Hz-20kHz
Input Sensitivity1V
Input Impedance20kΩ Balanced, 10kΩ Unbalanced
Input connector2 x XLR, 2 x 6.5mm TRS
Output Connector2 x NL4 + 4 x Binding post
Power Supply220V-230V 50/60Hz, 500VA
Cooling4 x fans, airflow from front to back
Dimensions (W x D x H)483mm x 375mm x 88mm
Packing Dimension (W x D x H)550mm x 540mm x 175mm
Net Weight15kg (33.1lb)
Gross Weight17kg (37.5lb)

UA660 Application

    UA660 Installation

      UA660 Parts

        UA660 Collocation