I think they look cool but know no one who has heard them. Shuguang really ticked me off by proing their bad poor judegment of audio tube style when they ceased production of the only 12AX7 they ever made that I liked. Its the 9th ed. 12AX7 C . I see them here and there but they obviously didn't get overdriven easily enough for guitar amps.
On the other hand the Genelex reissues are fantastic. I own an octet and was stunned that they sound as good as they do. Albeit in a very good amp.
With all due respect to others tastes the Genelex Gold Lion are a midrangy tube. In particular they are rich and full a bit warm for a KT-88 (and I was a devout E34L fan) As a rule I don't care for the 6550/KT88/KT90 sound but these are going to be quite a challenge for Schoo to beat. Even if the Shoo look cool!
On the other hand the Genelex reissues are fantastic. I own an octet and was stunned that they sound as good as they do. Albeit in a very good amp.
With all due respect to others tastes the Genelex Gold Lion are a midrangy tube. In particular they are rich and full a bit warm for a KT-88 (and I was a devout E34L fan) As a rule I don't care for the 6550/KT88/KT90 sound but these are going to be quite a challenge for Schoo to beat. Even if the Shoo look cool!