STAX SRM-T8000Low noise, well established 6922 dual triode tube adopted for high sound qualityThe noise level is extremely low and, by just that much, the particle of low level sound usually buried in noise comes up to the surface. Then even the usual level sound clears up to improve sound quality such as transparency. It seems as if the glass which superficially looks transparent has been cleaned anew. The whole circuit forms a hybrid one using class A