Spector 18v pre-amp conversion

[guildbass]

Well, as I was passing Maplins I thought I'd pop in and buy a new 9v battery clip thingy so I could convert my NS2000-4 from 9v to 18v.
As I'm sure most know by now, the pre-amp in the Spector NS2000-4, along with almost every other 9v Spector pre-amp, is actually built to run with voltages as high as 27v yet ships with a single 9v supply set-up.

The theory goes that by wiring another 9v battery in series, one can increase the 9v to 18v, thus increasing the head roomn of the amp and generally improving the sound...So...

That's what I did.

I recorded a little riff on Guitar Rig 3, no effects, no amps, everything centralised on the bass, centre mix of bridge and neck p'ups...Just dry with the 9v stock set-up, then did the conversion, put two new batteries in, and recorded the riff again with 18v.

Doesn't sound any different to me...And yes, I DID wire the batteries in series not parallel!

Have a listen...

Thoughts?

Jon