Info wanted on Sanders Sound / Innersound Preamps

Does anyone have any experience with the Sanders Sound Preamp, and/or know who/what company did the basic design work ?? I know Roger Sanders set a the design goals, but usually hires other companies to polish up the designs. Opinions, or info.

I think CODA originally did the actual build of the Innersound gear. Roger now builds all of the Sanders Sound System gear in house in Conifer Colorado, I believe.
Why don't you just call Roger at 303.838.8130 or email him at I'm sure that could answer all of your questions.

Regardless of whose designing or building the equipment each time I've visited Roger's room at CES or RMAF the system sounded fantastic.