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Edition S Four

Four-channel amplifier, stable at two ohms

The 4-channel Edition S Four amplifier delivers a maximum power output of 250 watts on four channels and has been cleared for stable operation at 2 ohms. High-quality potentiometers with metal axes, selected internal electronics and the MOSFET power supply guarantee top performance.

Four-channel amplifier, stable at two ohms

The 4-channel amplifier from the Edition S range is equipped with an efficient MOSFET power supply and delivers a maximum power output of 250 watts on 4 channels with absolutely stable operation at 2 ohms. The powerful amp is fitted with a channel mode selector switch and offers bridge or tri-mode operation. The combination of high-quality potentiometers with metal axes, selected internal electronic components and the multi-part aluminium heat sink with enlarged surface structure for optimum heat dissipation guarantees the highest performance level. The hairline finish and the stylish Mac Audio sticker on the top of the amplifier give the Edition S Four a sophisticated exterior.

Technical specifications


Power supply
Max. power output into 4 ohms,
14.4 V (sine burst 2:8, 1 kHz)
  • 4 x 140 W / 2 x 500 W
Max. power output into 2 ohms,
14.4 V (sine burst 2:8, 1 kHz)
  • 4 x 250 W
RMS power output into 2 ohms, 14.4V
(DIN 45 324)
  • 4 x 75 W
RMS power output into 4 ohms, 14.4V
(DIN 45 324)
  • 4 x 55 W / 2 x 150 W
Frequency response
  • 5 Hz – 50 kHz (-3 dB)
THD
  • < 0,08 % (100 Hz)
Signal-to-noise ratio (A-weighted)
  • > 100 dB
Dimensions (W x H x D)
  • 338 x 53 x 236 mm
Weight
  • 3.1 kg

Highlights


Features
  • SMD technology
  • High quality potentiometers with metal shaft
  • Aluminium heatsink/top plate with hairline finish
  • Three-part aluminium heatsink (5.5 g/mm) with enlarged surface structure for optimized heat dissipation
  • Channel mode switch 4/3/2
  • 2 ohm stable
  • Variable high pass 40 – 300 Hz (12 dB per octave)
  • Mosfet power supply
  • Bridge/tri-mode capability
  • Variable low pass 40 – 300 Hz (12 dB per octave)
  • Green operation and red protection indication LED
Connections
  • Low level pass trough