Kingwa told me a long time ago the SA series was not do popular and he would discontinue it. It started with the DACs and now the amp.The SA31SE is no longer on their website :blink:
Strange it is... I suppose I should be grateful I snatched mine awhile back but I hope Kingwa isn't phasing this beast out [though he very well might be ]
The Master 7 is actually more "musical" than the SA-2. Go figure...