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Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

Index last updated: 2026-04-28 23:25 UTC

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Re: [gsp-2101] Tube replacement / substitution ??

2006-11-11 by David Donohue

Go with Ei tubes, 12ax7's from Yugoslavia, they are the best for the 2101.

dunkin_donut3 wrote:
Hello,

I currently own 3 2101's and I want to start to experiment with
different tubes. I understand which distortions V1 and V2 coordinate
with but I would like to try some different value tubes. But before I
do I wanted to check with the memebers here.

Will the 2101 accept a 12AT7, 12AY7 or possibly a 6201 without damaging
it?

With that said... what is the current mindset with replacing the
12AX7s with NOS 12AX7s?

Thank you.


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