THIS IS AN AUCTION FOR AN OPEN-BOX JBL CONCERT A704, 4-CHANNEL CAR AMPLIFIER.


Customer return - change of mind. Amplifier has been tested and works 100%. Packaged as new.


  • 4-Channel Class AB Car Amplifier
  • Rated Power RMS Output:
  • 70W x 4 @ 4 ohm
  • 90W x 4 @ 2 ohm
  • 180W x 2 @ 4 ohm bridged,
  • <1%THD
  • Full/High-Pass/Low-Pass Filter:
  • 40-400Hz, 12dB/octave
  • SN Ratio (1W @ 4 ohms): >75dB
  • Frequency Response (-3dB):10Hz – 45kHz
  • Gross weight: 2.86kg

Powerful Class AB amplifier
Class AB amplifier output stage combines the advantages of the Class A amplifier and the Class B amplifier while minimizing the problems of low efficiency and distortion associated with them.

Adjustable High-Pass/Low-Pass Crossover Filter
Concert amplifiers have the High-Pass Filter (HPF) and the Low-Pass Filter (LPF), which allow you to adjust the frequency from 40Hz to 400Hz based on your own music taste to deliver the appropriate musical frequencies to speakers.

Auto Turn On Facility
When using the High-level signal inputs, the amplifier automatically turns on once a DC offset is detected (>2.5 volts). When using the Line-level signal inputs, the amplifier will also turn on once a +12V signal is detected from the remote turn-on wire.

Efficient Cooling Design
High performance amplifiers are not only powerful but also compact which depend on overall Efficient Cooling Design.

Concert Sound and Elegant Look

JBL Concert amplifiers deliver extraordinary sound experience with elegant industry design.

Normal Retail price of £199.99 - currently on special offer!

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