The PAC9 is a classic analog chorus featuring swirling warm chorus sounds and stereo output for a wide chorus spread. In addition to the standard Speed and Width controls, the PAC9 offers a Bright switch for a focused sound and a Pure switch that boosts the signal.


  • Clean analog chorus sound using the Maxon MC4107D BBD chip
  • Speed and Width controls
  • Bright and Pure switches offer a variety of sounds for bold and deep chorus effects
  • Widely adjustable Speed range of 0.33Hz - 8Hz. Leslie-like tremolo chorus is available at faster Speed settings.
  • Stabilized DC to DC converter impervious to battery voltage drop and fluctuations in power providing rock solid tone and functionality.
  • Dual outputs allow for stereo chorus effects with two amplifiers or stereo setups.
  • High-performance noise reduction using an RMS level sensor and a high-definition VCA providing a dynamic range with low noise.
  • Clean chorus without distortion is available with plenty of headroom
  • Can be used in effect loops of amplifiers. (+4dB/-20dB)
  • True bypass switching on both outputs provided by a 4PDT mechanical switch with no alteration of dry signal’s tone when effect is bypassed
  • LED indicator for effect on/off
  • DC power or 9V battery
  • Made in Japan
Brand Maxon

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