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Hello,

just because I found some documentation for the tas3004 audio chip ( Apple calls it snapper and used it in the iBook G4 and others ) - see http://macallan.homeunix.org:6704/stuff/Mac/tas3004.pdf - I had to add bass and treble controls. See attached patch :)
I'm not sure it does The Right Thing(tm) everywhere but it works for me. The chip supports adjustments between -18dB and +18dB in 0.5dB steps, for simplicity's sake I only use 1dB steps and -16,16 so setting monitor.treble to 128 gives 0dB, 0 gives -16dB, 255 gives +16dB. 

have fun
Michael

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