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Biema Z55G PA Amplifier Stereo/Bridgeable 2x550W

SKU : A4173A

RRP: $999.00
Our Price: $819.00
Less: $180.00


  • Description
  • Reviews

This PA Amplifier Stereo/Bridgeable 2x550W is an effective solution for demanding commercial audio applications. This new series dubbed the “Apple” range have been completely redesigned by Biema to offer vastly improved cooling, efficiency and circuit protection. This range is designed to function as a stereo or high power single channel amplifier for use in foreground sound reinforcement ie: pubs, clubs, cinemas and multi-function venues. The variable speed cooling fan and ‘T’ shaped heatsink tunnel ensure the amplifier performs well even in demanding conditions.

The protection circuitry employed ensures the integrity of the amplifier during overload condition, output terminal short circuit and output clipping. Each channel is fitted with a recessed front mounted volume level. Inputs are via balanced 3 pin XLR or unbalanced 6.35mm jack. Output connections are made via binding post or heavy duty Speakon connector.


  • Rugged heavy duty construction
  • 19” rack mount
  • Bridgeable, parallel or two channel stereo operation
  • Earth lift switch
  • 3 pin XLR and 6.35mm inputs.
  • Short circuit protection with indicator
  • Overload protection with indicator
  • Clipping prevention circuitry with indicator
  • Variable speed fan forced cooling
  • Muting circuit for switch on/off


  • Power: 2 x 550W 8Ω, 2 x 800W 4Ω
  • Power (bridged): 1600W 8Ω
  • Output Connections: SPEAKON
  • Freq. response: 20Hz - 20kHz ±0.5dB
  • Input sensitivity: 0.77V
  • Input Impedance: 20k Ω/Balanced, 10k Ω/un-balanced
  • S/N Ratio: ≥95dB
  • THD: ≤0.03%
  • Crosstalk @ Rated Output/8kΩ/1kHz: >70dB
  • Damping Factor/8kΩ/1kHz: >240
  • Slew Rate: 15V/uS
  • Protection: Soft Start, Short Circuit, Limiter, DC Fault, AC Line Fuse, Thermal Cut
  • Cooling System: Two Steps speed fan
  • Mains Power Supply: AC: 220-230V 50Hz/60Hz
  • Dimensions (mm): ≈ 482W x 430D x 88H
  • Net Weight: 10.5kg
  • Gross Weight: 12.5kg

    *Specifications are subject to change without notice.


We offer 2 years warranty on this product from its date of purchase. This is available from Altronics stores, online purchases or Altronics resellers. In accordance with our full warranty terms we will repair, replace or refund if goods you have purchased from us are defective.

  • Model: A4173A
  • Brand: Biema

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