I know that @sns is using the Lanlai Elite 101D in his CSL and has had no problems to my knowledge. So I suspect that the current production available via Grant Fidelity are of good quality. I may at some point give them a try but for now I’m very happy with the Psvane W.E. Replica 101D, very happy.
Bill, I also believe that the 101D is a brilliant preamplifier tube but for what ever reason is not even close in popularity compared to for example the 6SN7. I’m very familiar with the 6SN7 and it is no doubt a very fine tube. Of course implementation is a major factor in determining ultimate sound quality. What impresses me about the 101D is its sheer purity and transparency. It seems to have nearly zero editorializing qualities, yet is by no means sterile/lean/analytical, just pure.
If the rest of the audio system is capable then one will hear natural and beautiful tone, timbres, overtones/harmonics and very fine nuanced musical detail. Perhaps it’s a more difficult tube to work with and get right in an audio circuit. I’m glad Israel Blume decided to give it a go and develop the magnificent CSL. for us hopelessly devoted music lovers’ 🙂
Charles