Mike
Maybe I missed it but are u using the MSB to up-sample your files or HQ Player?
nope.
we (SGM) tried up-sampling but the MSB is better 'bit-perfect'. we went back and forth with various combinations of settings over some time. which does not mean that forever in the future some sort of up-sampling with HQP might not move the needle. but not now.
with the Select II 'hybrid' dac, it optimizes both all resolutions of PCM and all resolutions of dsd the best I've heard either format. it's all played natively seamlessly.
HQP still brings some 'juice' to the table in bit-perfect mode, but I'm not techie enough to relate it.
the MSB Select has it's own algorithms for optimization; there are specific ones for redbook, and for dsd optimization that I know of. it's just that the computational power of the MSB is formidable by itself.