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MadBoy® F-LOUD 370 digital power amplifier with optical input



in stock, please allow 3-5 days delivery time

F-LOUD 370 is a digital, Class D power amplifier. It is lightweight and small, but its maximum output power is up to 680 W. The power amplifier has a very high efficiency, which means that it produces considerably less heat than analogue power amplifiers.

The power amplifier can be connected to a mixer with an optical cable creating a digital connection between the devices. Digital signal is interference-free, contrary to the traditional analogue cable connections. And what’s more, multiple amplifiers can be chained together. This is useful when building the sound system in a larger space, for example, in a restaurant.

MadBoy® F-LOUD 370 uses a high-performance 24-bit/192 kHz Codec. Therefore, the dynamic range of a recording can be reproduced extremely accurately and naturally. The power amplifier monitors the incoming and outgoing signals and reports if the audio signal is distorted. In other words, it is impossible to ruin the sound, even by accident.

You’ll notice that not all the power amplifiers sound the same!


  • 370 W Digital Power Amplifier (Class D)
  • Output power
    • 2 x 185 W RMS (4 Ω) 
    • 2 x 340 W MAX (4 Ω) 
    • 2 x 105 W RMS (8 Ω)
    • 2 x 170 W MAX (8 Ω)
  • High Performance 24-bit / 192 kHz Codec
  • Digital optical input for connecting to digital audio sources
  • 2 x balanced XLR / Jack (6.3 mm) combo for connecting to analog audio sources
  • Supports PCM audio with 32 kHz-192 kHz sampling rates in Optical input
  • 192 kHz sampling rate for analog inputs
  • Digital optical output loop for chaining multiple amplifiers
  • Individual volume controls for both channels
  • Speakon and 2-way binding post for the speakers
  • Input selection switch
  • LED indicators
  • Inputs
    • 1 x Optical input (S/PDIF)
    • 2 x Balanced XLR / Jack (6.3) combo
  • Outputs
    • 1 x Optical output (loop)
    • 2 x Speakon terminal
    • 2 x Binding posts
  • Two temperature controlled cooling fans
  • Amplifier is protected against DC, over temperature, overload and short-circuit
  • AC 115 V (60 Hz) / AC 230 V (50 Hz) for worldwide use
  • Dimensions: 6.5 cm (H) x 43 cm (W) x 23.5 cm (D)
  • Weight: 3.8 kg


  • 1 x F-LOUD 370
  • 1 x Power cable
  • 1 x User manual