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LA 4120 D


Full Range High Performance? compact D class amplifier

  • Compact 4/3/2-channel D Class amplifier
  • Compact size for easy installation
  • Latest full range high performance circuit design
  • Surface mount components technology
  • 4 Layers PCB board
  • Balanced input circuit design
  • Audio precision quality control verification
  • White "Blam" Logo illumination

To design these powerful, robust, and compact amplifiers, we have used the latest in D class audio amplifier technology. These amplifiers employ SMD (Surface Mount Device) electronic components, reducing overall size while still providing high-end audio performance. Thanks to their high efficiency, they will provide the power required to reproduce the full dynamics of your favorite recording, combined with unheard of reliability.
BLAM wishes you long hours of enjoyment!


Low level input range
0.2V / 6V
RMS output (4 ohms)
120 watts * 4ch RMS
RMS output (2 ohms)
200 watts * 4ch RMS
Bridged output (4 ohms)
400 watts * 2ch RMS
Lpf filter
70Hz - 250 Hz
Hpf filter
70Hz-320 Hz
Signal to noise ratio
95 dB
Frequency response
20/50 Khz
Live boost on 1 and 2 channel
Bass boost on 3 and 4 channel
50 Hz
Remote bass control for rear channels
Short circuit / low impedance /? Reversal of polarity / heat protection
Dimensions (L xlx H)
278 x 175 x 51 (mm)


  • Mounting screws
  • Instruction manual


LA4120D croquis