EAE A4-8 MKII 80W Lithium Battery Powered Acoustic Amplifier with Bluetooth

EAE A4-8 MKII 80W Lithium Battery Powered Acoustic Amplifier with Bluetooth

A4-8 MKII 80W Lithium Battery Powered Acoustic Amplifier with mixer, monitor controls, digital effects, and Bluetooth®

NEW and Improved –  While keeping the same look as the A4-8, the A4-8MKII features a 4-channel mixer, independent EFX level control on all 4 channels, EQ controls on two channels , Direct Outs (Chan 1 and 2),  Stereo Mix Outputs and a Master 3 Band EQ for the Monitor Outputs. Built-in 11000mAh Lithium Iron Phosphate (LifePO4) Battery with Bluetooth and Aux Input.  Powered by 80 Watt Bi-Amp Class-D amplifiers, our 8-inch LF driver promotes stunning bass response, which, combined with A4’s higher efficiency silk-dome tweeter, retains and fully articulates every nuance of your musicality. The resulting clarity and sonic imaging cuts to all genres creating shimmering acoustic and expressive vocal performances.  The end result is uncompromising audio quality that preserves artistic intentions and inspires creativity.


1. NO sound from Amp with Chan 1, 2 or 3/4 Inputs but Sound with Bluetooth Streaming

Answer – Check the EFX MIX knob position and make sure it is not Full Clockwise (All WET), set Mix Knob to 12 O’clock and re-check.

2. Battery Not Charging

Answer – Make sure Battery Switch is in the “Connected” position.


The A4-8 MKII utilizes the same Lithium Iron Phosphate (LifePO4) batteries and protection/charging circuits as A6-55 since 2018.  LifePO4 batteries are “NOT” the same type as Lithium Ion (Li+) or Lithium Polymer Batteries (LiPO or Li-Poly).  We selected Lithium Iron Phosphate (LifePO 4) type of batteries for it’s advantages in safety properties and long service life. LifePO4 is thermally and chemically stable, reliable without the possibility of lithium fires. LifePO4 batteries have long service life, with a shelf life that far exceeds the service life of many other batteries.  Not only we enclosed the Batteries in a metal cage, we added many Battery Protection circuits – Over Voltage protection, Thermal Shutdown, Over Charge protection, Over Drain protection. The LifePO4 batteries are used in our products are UL safety approved and MSDS certified.

A4-8 MKII Battery Powered Acoustic Amplifier features

  • 80 W High-efficiency Class D bi-amp
  • Studio-quality 2-way monitor
    with 4-Channel Mixer
  • 2 Class-A Mic and 4 Line inputs
  • +48V Phantom Power
  • Notch Filter Ch 1
  • 3-band input EQ, Ch 1 & 2
  • 16 selectable Effects
  • Bluetooth & Auxiliary Input
  • 8” woofer & 1” inch tweeter
  • Monitor section; 3-band EQ, Monitor Volume,
    stereo AUX input with level control
  • Chan 1&2 Direct Out
  • Main-Mix-Right Output
  • Solid MDF Cabinet
  • Integrated pole-cup
  • Metal chassis
  • Panel-mounted POTs/Jacks
  • AC supply/ Battery Charger
  • 11000mAh Lithium Iron Phosphate (LifePO4) battery
  • Up to 4-6 hours of play time
  • Fast Charge time
  • Designed and assembled in USA