Am I correct to assume that you're switching between 2 systems... Quad 909 + Quad ESL-2805 (86dB) and Audio Electronic Supply SE-1 + JBL 4430 (93dB)?
2 of my friends have the Supratek Cabernet and both sound great in their systems, Mick makes excellent preamps.
Impressive vinyl collection! think you beat me... not by much though ;) I've actually been thinking of adding some extra Ikea Kallax shelves on the wall behind the speakers... how do you find they impact diffusion when filled with records?
Ever tried playing RTR tapes?
Cheers, enjoy the music :)
Ps: love the espresso machine!