Adventures In Audio with Audio Masterclass
Boss Offers Rackmount GT-PRO Processor

Boss Offers Rackmount GT-PRO Processor


January 20, 2005

With a dual COSM effects engine and an expansive I/O section that includes XLR outputs, three sets of send/returns, and a USB port for data exchange and audio flow, the GT-Pro is the perfect front-end for driving a wall of powered cabinets or for direct recording applications.

Powered by dual COSM amp-modeling engines, the GT-Pro allows tones to be constructed by combining any two of the 46 amp models — then layering, switching, or panning between them during performance. Amp channels can even be controlled by the strength of a player's picking. No matter which amp model has been selected, a companion lead tone is instantly available with the click of the Solo Switch. It's like having a separate solo channel for every COSM amp model.

Looking for BOSS's best effects? You'll find them here. As the top of GT line, the GT-Pro provides 44 effects categories, with 200 preset- and 140 user-patch locations. Choose from compressors, overdrives, delays, reverbs, choruses, EQs, wahs, and dozens of other BOSS-quality effects — including a sitar and acoustic guitar emulator. The GT-Pro also impresses with its ultra-flexible effects routing. Internally, the 13 effects blocks can be configured in any order desired; externally, a trio of effects loops plus an array of assignable outputs enables the most flexible signal-routing configurations. Used as a rackmount guitar preamp, the GT-Pro outperforms the competition with its advanced internal effects and routing flexibility.

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The GT-Pro offers top-grade analog circuitry and balanced outputs, and, thanks to its improved signal-to-noise ratio, it delivers a pure signal path. Its built-in ground-lift switch can be used to keep signals clean, no matter thestage or studio environment.

I/O flexibility is the name of the game, as the GT-Pro is equipped with four 1/4″ analog audio outputs, a pair of balanced XLR outputs, and three pairs of effects send/returns. Signals can be split to other amps via the stereo Sub Outs.

For high-resolution recording, the GT-Pro offers a 24-bit coaxial output — the routing of which is user-definable. In recording situations, multiple signal paths can be set up — one for the recording input, for example, one for a private monitor, and another to the digital out in the signal path (independent of the loop out and main outs). For one-cable patch management, a USB port is provided for connecting the GT-Pro to a computer; the GT-Pro comes with Mac/PC editor/librarian software at no additional cost. In addition, the GT-Pro provides USB-Audio functionality.

For more information, visit their web site at

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David Mellor