The output stage of a class AB amplifier combines the advantages of a class A amplifier and a class B amplifier, while reducing the problems of low efficiency and distortion associated with them.

Adjustable high-pass/low-pass crossover filter

Concert amplifiers have a high-pass filter (HPF) and a low-pass filter (LPF) that allow you to adjust the frequency from 40 Hz to 400 Hz based on your musical taste to deliver the appropriate musical frequencies to your speakers.

Automatic switch-on device

With high-level signal inputs, the amplifier automatically turns on as soon as a DC offset (>2.5 volts) is detected. Using the line level signal inputs, the amplifier will also turn on when a +12 V signal is received from the remote trigger wire.

Efficient cooling design

High-performance amplifiers are not only powerful, but also compact, which depends on the overall effective cooling design.

Concert sound and elegant appearance

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

Reliable performance

To ensure high-quality sound and reliable performance, Concert amplifiers select high-quality components such as audio capacitors, power MOSFETs. These boosters must also go through a rigorous testing process to eliminate unstable boosters. JBL freezes them, bakes them, shakes them, shines ultraviolet light on them and runs them at full power for several days.

Technical data

2 Channel Class AB Car Amplifier

Rated power RMS output: 65 W x 2 at 4 ohms; 85 W x 2 at 2 ohms; 170 W x 1 at 4 ohms in bridge mode, <1%THD

Full/High Pass/Low Pass Filter: 40-400Hz, 12dB/octave

Signal-to-noise ratio (1W at 4 ohms): >75dB

Frequency response (-3dB): 10Hz – 45kHz