designing analog delay: advantages/disadvantages to running in/out buffers @ 18v

[ppatchmods]

i'm designing an analog delay around the v3205. the max input voltage is 9v. the headroom has been a problem in some designs, but is there any advantage of running just the buffer section on 18v via a charge pump? will it help with the problem? i will be running 2 3102's and 4 v3205's. thanks

[Processaurus]

You would want to run the whole signal path on 18v, unless you were padding the signal down and then boosting it later.  Otherwise something in the middle will be the bottleneck, as far as headroom goes, and it's a waste of time making huge headroom before it.  Also any pedals before or after that run on 9v will clip at 9 or less, so unless you NEED more headroom than 9 volts for some specific application, the effort's usually wasted in pedal land. 

[ppatchmods]

Thanks for the wisdom! That is what I needed to know.

[Jaicen_solo]

Agreed, you're much better off using a compander if you're looking to reduce noise levels.