Just curious how much processing (eq etc) is present in the non-jbl non-nav touchscreen?
Is it a flat EQ 20hz-20khz signal ideally, or is it heavily EQ'd or not full 20-20k, or even worse add other phasing stuff like time alignment, etc that some OEM's like to do to their stock system head units?
Just got a 2013 TRD Sport Access Cab which appears to be all of four speakers.. Tweets and door mids. So I'm hoping the stock head unit has a relatively clean output. Contemplating upgrades after the head unit.. Deadening, processor, amps, drivers in door, sub. While I'm not a fan of speaker level outs, I could possibly sacrifice that if the signal is workable for an MS-8 maybe or similar.
Depending on how incorrupt the stock head unit's signal is, I could try keeping stock, otherwise, looking for an alternative.