It's been quite some time since I visited this thread. Just
want to mention a few things. First, I still own the 88PB,
and am still enjoying it very much. It of course uses four
7DJ8(PCC88) tubes. Aside from its stock tubes(Ei Yugos), I
have tried three other 7DJ8 brands: Tesla, Telefunken and
Tungsram. I have consistently come back to the Teslas, which
seem to give me the best top to bottom extension and
balance. The Telefunkens sound a wee bit soft at the top by
comparison, while the Tungsrams sound very slightly weighted
toward the treble. Please keep in mind these are the
impressions I obtain in MY system. Results may of course
vary with your system's components, and don't forget the
matter of personal taste. Also, other than what I just
mentioned, I've never typically heard top end roll off with
my 88PB. Good listening to all!
want to mention a few things. First, I still own the 88PB,
and am still enjoying it very much. It of course uses four
7DJ8(PCC88) tubes. Aside from its stock tubes(Ei Yugos), I
have tried three other 7DJ8 brands: Tesla, Telefunken and
Tungsram. I have consistently come back to the Teslas, which
seem to give me the best top to bottom extension and
balance. The Telefunkens sound a wee bit soft at the top by
comparison, while the Tungsrams sound very slightly weighted
toward the treble. Please keep in mind these are the
impressions I obtain in MY system. Results may of course
vary with your system's components, and don't forget the
matter of personal taste. Also, other than what I just
mentioned, I've never typically heard top end roll off with
my 88PB. Good listening to all!