Lightning Boy Audio Opti-Mu Prime - Variable Mu Vacuum Tube Compressor

Various

Lightning Boy Audio

A new breed of compressor, Opti-Mu Prime offers unparalleled natural sounding compression in a unique circuit invented by Mike Congilosi II of Lightning Boy Audio.  The type of compression as coined by the man himself, is an optically controlled variable mu compressor or "Opti-Mu."  A pair of 12AU7 tubes power this super clean compressor.  One tube is responsible for driving the optically controlled vari-mu circuit, which constantly readjusts the bias of the preamp tube, based on how loud the instrument is being played.  Louder notes cause the bias of the preamp tube to lower, creating a cleaner and lower volume for those moments.  This is the only pedal on earth which uses actual vacuum tubes to achieve the compression effect.  There are some vacuum tube powered compressor pedals out there, but they are actually optical compressors, which use vacuum tubes for makeup gain.  This is not a vacuum tube powered optical compressor, it is an optically controlled vacuum tube compressor.  A bit different than anything else in the world.  Mastering Engineers prefer to use vari-mu compressors over all other types of compressors because of their transparent natural sounding compression characteristics.  Opti-Mu Prime delivers the same stunning beauty of a serious vari-mu studio compressor in a stomp box format.    

Features:

  • The first ever, optically controlled variale mu compression circuit.
  • Selectable Hard and Soft Knee compression.
  • Adjust the amount of compression via knob
  • Fast attack and slow release time, ideally suited for electric guitar.
  • Hand-wired point to point and made with paper in oil capacitors and NOS 12AU7 tubes.

Lightning Boy Audio (press release June 28, 2013)

Hamburg, NY – Lightning Boy Audio (LBA) is pleased to announce a whole new breed of compressor pedal with the introduction of Opti-Mu Prime.

This new pedal delivers the distinctive qualities of a vari-mu studio compressor in a stomp box format. Opti-Mu Prime pushes the limits of natural sounding compression by employing a unique circuit designed by Lightning Boy Audio. A pair of 12AU7 tubes power Opti-Mu Prime.  One tube drives the optically controlled vari-mu circuit, which constantly readjusts the plate voltage of the preamp tube, based on how loud the instrument is being played.  The second serves as a preamp, and is the only tube in the audio path.

This is the only pedal on the market that employs actual vacuum tubes to achieve the compression effect. There are some vacuum tube powered compressor pedals, but they are optical compressors, which use vacuum tubes simply for makeup gain. Many Mastering Engineers prefer to use vari-mu compression for it’s transparent and organic sound quality.

As with all Lightning Boy gear, paper in oil caps are utilized for their ultra-transparent sound and smooth tone. Like all of our other builds, the Opti-Mu Prime is hand wired point to point with silver plated Teflon insulated wire. To prevent any unnecessary resistor noise, all Lightning Boy equipment is made with low noise Vishay/Dale metalized film resistors.

Opti-Mu Prime is available exclusively on the Lightning Boy Audio website. The pre-release price of $299.00 is available now through the end of the summer NAMM Show (July 13th). Visit our website for more details and for a demo video.

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