Mathew Cohen wrote: > Could you nice people suggest a good voltage controlled amp chip (audio) for > 4 channels or a matrix switcher with cross point attenuation 9 (chip). This > is to be used with a 16f84. > I think it is obvious what I am trying to achieve if anyone has another way > of attenuating 4 channels of audio (with 2 channels that can be swiched to > Mic level) please let me know. AD have the SSM2163 4/8 way volume control. NS have the LM1971 / LM1972 / LM1973 series. I've used both of these before - SPI interface IIRC. Regards... _______________________________________________________________ Dave Duffy Audio Visual Devices AVD@uq.net.au Unit 8, 9-11 Trade Street, Cleveland, Queensland 4163 Australia Phone: +61 7 38210362 Facsimile: +61 7 38210281 _______________________________________________________________