Thanks for all comments.
Ddriveman,
Does Gold mean SPU Gold or SPU Gold Reference?
Someone suggested that Gold sounds better than Gold Reference.
My experience of SPU is SPU Mono, SPU GM e MKii, and SPU Gold Reference.
SPU Mono (MM, high voltage) sounds better than Denon DL102 mono.
GM e MKii sounds worse than other Ortofon MC cartrdiges I've owned, including MC20, SL15e, and SL20q.
Gold Reference dows not sound better than SL20q to my ear with my systems.
SL20q is with Clearaudio Bluemotion and Ortofon MCA76 phono MC amp. Gold reference is with Garrard 301/Ortofon RMG309 and Budgie Cinemag SUT.