I'm still in the process of building my GG, so I can only confirm that it is cheap and fun. As far as good sounding, there are many reviews of this preamp on Audioreview and AudioAsylum. I would start there. Have fun.
Trascendent Sound Grounded Grid preamp
I love equipment that over-achieves. Is this a "giant-killer?" How good is it? Has anyone here tried this unit? One of my favourite"cheap" preamps was the discontinued N.E.W. P3-single -ended preamp. Correct me if I'm wrong but I think this was a Cary-based design. If you have a favorite "inexpensive" preamp, list it, tell me why and how it compares. The idea here is cheap, good sounding and fun.....regards, Bluenose