By now I have a good many hours listening to the "pseudo" SLP-90. I have listened to it paired with the "clone" TransAudio 'D5' amplifier discussed in another thread. I am very please with the result with the important caveat that I recognized that this tube device, like other tube devices, delivers pleasant distortion to the sonic presentation.
I particular I was surprised and delighted with the SPL-90's presentation,(in particular paired with my Purifi amp), of J.S. Bach's cantatas as recorded both by Masaaki Suzuki and Eliot Gardner. These clearly display the preamp's slightly forward but mellow, lustrous midrange. Both solo chorus voices benefit. In fact, chorus voices are more distinct and separated than with my ultra-low distortion Schiit Kara.
I might mention that I connected the SPL-90 to the Purify using an RCA to XLR converter like
THIS one. It uses a purpose-made DRV134PA chip to create a balanced, differential signal from single-end input. As far as I can hear the converter is completely transparent.
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