Originally Posted by Unclemeaty

Burrbrown is now a division of texas instruments, and that division of ti is simply the best in terms of audiophonic IC construstion. BB is the intustry standard for operational amplifie circuits in terms of their entire line of parts and such. Many repair techs will pay the 30x premium for BB over other opAmps made in China or even from Texas Instruments. BurrBrown components can mainly only be found in the highest of the high audio equipment mainly in home audio, but is also the primqry devised used for engineering reference design of absolute quality.

you can pay someone to upgrade most amps and processors with BB parts but the cost is usually not worth the trouble.

as far as I kno for car audio BurrBrown is found in Zed factory upgraded amps and no many others.