MTX RFL4120 picture


Flagship class-AB 800W RMS @4Ω 4-channel Hi-Fi amplifier with complete variable active x-over


The MTX RFL4120 (4x120W RMS) four-channel amplifier is a model of sound quality. It is at the cutting edge of technology and performance. This is the standard of the brand's amplifiers for sound quality. All its construction and the components used exude sound quality. We use Sanken brand transistors on the power stages. These are hi-fi transistors. We take incredible care in aligning them to keep the distortion as low as possible. The flexibility and flexibility of its filter allow it to filter all options (front rear, subwoofer, bass, medium or treble, anything is possible).


  • Exceptional sound quality in class-AB.
  • High quality components (Sanken hi-fi grade transistors).
  • All aluminum construction with backlit window to admire the components.
  • Modularity 4, 3 or 2 channels.
  • Flexibility of the active filter capable of doing everything (high pass, low pass, variable band pass from 40 to 5000Hz).
  • EBC control on channels 3 and 4.
  • 2x50mm² terminal block


  • Class-AB 4-channel amplifier
  • CEA2006 certified power:
    • 4 x 200 Watts RMS @ 2Ω and THD + N ≤1%
    • 4 x 120 Watts RMS @ 4Ω and THD + N ≤1%
    • 2 x 400 Watts RMS bridged @ 4Ω and THD + N ≤1%
  • Active filter:
    • High Pass (HPF) 12dB / oct variable from 40Hz to 5000Hz
    • Low Pass (LPF) 24dB / oct variable from 40Hz to 5000Hz
    • Band Pass (BPF) 12dB-24dB / oct variable from 40Hz to 5000Hz
  • Signal / noise ratio (1 Watt):> 98dB
  • THD + Noise (Distortion) (1 Watt): ≤ 0.05%
  • Frequency response (± 1dB): 10Hz-90000Hz
  • Sensitivity level: 200mV to 6V
  • EBC control included
  • Dimensions: 525mm x 204mm x 59mm

Recommended performance associations

  • In 3-channel configuration (front + sub) with the TX6 or TX8 ranges
  • In a simple 4-channel wideband configuration (Front + rear) with the TX6 or TX8 ranges
  • In four active channels (tweeter + midrange)
  • Perfect combination with the special MTX RFL4001D subwoofer amplifier
  • Power supply pack: MTX StreetWires ZNX50K
  • An RFL4120 amplifier with 1 TX8652 or TX665S kit at the front and an RT subwoofer or an RTE12AS box at the rear
  • An RFL4120 amplifier with 1 TX8652, TX665S or TX650S kit at the front and TX669C elliptical at the rear
  • An RFL4120 amplifier with 1 TX8652, TX665S or TX650S kit in active 4 channels
  • Power supply pack: MTX StreetWires ZNX50K


The power of the amplifier must not exceed that of the loudspeaker. We must compare RMS powers with RMS powers. The amplifiers should not be exposed to moisture, excessive vibration, or high temperatures.


MTX wants you to enjoy your hearing for a long time. Excessive exposure to loud volumes can damage your hearing. The United States Department of Labor recommends not exceeding the following recommendations.

  • 90db : maximum 8 hours/day
  • 92dB : maximum 6 hours/day
  • 95db : maximum 4 hours/day
  • 97db : maximum 3 hours/day
  • 100db : maximum 2 hours/day
  • 102db : maximum 90 minutes/day
  • 105db : maximum 60 minutes/day
  • 110db : maximum 30 minutes/day
  • 115db : maximum less than 15 minutes/day
  • 120db : immediate danger, 0 minute/day

Picture Gallery


What the press says about it


"Power and quality"

"Refined aesthetics"

"The RFL4120 offers sound reproduction quality that I did not expect"

"Le contrôle du son est excellent"

"Electronic percussion is really impressive"

"The RFL4120 is very balanced. Its bass is well controlled, very punchy and powerful."

"The sound control is excellent"

"Ultra versatile active filter"

"The interior shows careful construction"

MTX around the world

MTX - Mitek Europe

23 rue des Apennins 75017 Paris
Tel : +33 1 42 28 72 52 -
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