Boss GT-6B Professional bass multi-effects processor (GT6B)

Features:
True analog bypass and 24-bit converters for uncompromised sound quality

COSM Bass Amp Modeling recreates the tone of many of the greatest bass amps and speaker cabinets in history

COSM Compression effect modeled after 4 well-known compressors

Ultra-intuitive interface with analog-style knobs; built-in expression and control pedals

Versatile effects including "Auto Slap" and sound-on-sound looping

Boss's best synth bass sounds with incredible tracking

Balanced XLR output and coaxial digital output for recording

Unrivaled Sound Quality
When designing the GT-6B, Boss' primary focus was quality?quality you can hear in every component from its 24-bit converters to its true analog bypass, allowing bass players to switch to the pure tone of their bass guitar when desired. A balanced XLR output and coaxial digital output ensure the highest sound quality when recording, giving the GT-6B a decisive advantage over other bass multi-effects.

COSM Modeling for Bass
Thanks to proprietary COSM technology, the GT-6B can model the sound of 6 classic bass amps including "Concert 810," "Session," "T.E." "Bass 360," "B Man," and "Flip Top." But amps are only half the story, so the GT-6B also includes several speaker cabinet models like 8 x 10, 4 x 10, 2 x 15, and others. Now you can get great tone direct!

Killer Effects with COSM
The GT-6B features Boss' finest "bread-and-butter" effects — including chorus, reverb, delay, flanger, and more — all tuned for bass guitar. And with COSM Overdrive/Distortion Modeling and Wah Modeling, bass players can get some of their favorite tones and effects without using amps or noisy stompboxes. The GT-6B also features new COSM Compression, which offers models of several well-known compressors. With all of these amazing COSM effects, bassists can literally just plug in and play.

Auto Slap, Looping, and More
New performance effects include an Auto Slap feature, which creates automatic slap patterns using Preset or User templates, plus sound-on-sound looping for creating loops "on the fly" — even fat synth bass sounds with killer tracking. There's nothing else like it!

This website has some sound samples of the GT-6B. http://www.zzounds.com/item--BOSGT6B
FOR FURTHER INFORMATION VISIT BOSSCORP.COM (http://www.bosscorp.co.jp/products/en/GT-6B/)
Check out the ROLAND/BOSS site for all the technical stuff:
http://www.rolandcorp.com.au/default.aspx?prd=139

User reviews are at:
http://reviews.harmony-central.com/reviews/Effects/product/Boss/GT-6B+Bass+Effects+Processor/10/1

This is a used unit, in excellent operating condition with only a small scratch on the front face. The power adapter cord wrap has also broken (see photos). Unit comes with original instruction booklet and AC power adapter.