Like for A Silver Mt. Zion. And an obviously well thought out system! Back years ago when I had WA3, the TS 5998 was revelatory in that amp. Rolling 6992s was splitting hairs, comparatively, back when rolling NOS 6992s from Europe was a relatively inexpensive endeavor ($20 or $30/pair) compared to the 5998. Nowadays, trying to track down NOS white vs. orange globe bugle boys would cost you nearly as much as that entire amp.