Transcendent Sound Grounded Grid Preamp upgrade


I've a Transcendent Sound Grounded Grid Preamp which sounds decent, but no match for a friend's Manley Jumbo Shrimp loaned me. I understand the price difference. Has anyone tube rolled this preamp with significant improvements?
I'm running an Audio Quest AC2 power cord.

It sounds congested and not as dynamic as I had hoped. Suggestions other than buy a Manley jumbo Shrimp are appreciated. Thanks.
celtic66
For years, I ran a transformer-based Sonic Euphoria passive line stage. I wanted to try a tubed line stage, and a friend had gotten the Grounded Grid, which sounded very good to me.

So, I ordered the kit, along with a Goldpoint stepped attenuator and Bent Audio remote volume control. I used mil-spec silver hook-up wire, and built flavor 2 power cord from Chris Van Hul.

I listened to the unit like this for a while, and on the advice of a friend, I installed Clarity Caps output caps, and NOS Amperex 12AU7 tubes.

Now, the Grounded Grid never disappoints. It is extremely quiet, yet dynamic and transparent. I don't feel I'm missing anything by not having an uber-expensive preamplifier.

I'd try working on the GG a bit, I'm sure it's got more to give, with just a few relativly inexpensive upgrades.

Best of luck,regards,
Dan
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