Hi @msommers & @alcarp
I posted a fairly lengthy description of my BII vs MR and BII vs MR&SU-1 experience here:
See posts 29 and 30.
BII vs MR (on LPS-1) - The BII edged it slightly.
BII vs MR (on LPS-1) & SU-1 (on stock PSU) - The SU-1 edged it slightly (for me anyway). Just more gravel or breath in the vocals and the instruments had a little more texture.
Then added the Curious USB cable in between the MR & SU-1 and it improved slightly more. My gf commented immediately that it sounded smoother (and she’s generally bored witless by all this stuff ).
Added the Wireworld platinum 0.3m HDMI cable and it improved by a little bit more.
Modded the SU-1 using the Kitsune kit so that I can power it by another LPS-1 and that made a big difference. Like immediately I heard it and had a big smile on my face.
Result is that the SU-1 path is now comfortably beating the BII. Sorry Paul and PSA team but to my ears it is. But the SU-1 path involves 2 Uptone LPS-1s, a Microrendu and two fancy pants cables and cost north of $2000 in total. The BII by comparison costs what, $700 and is no doubt a fantastic bit of kit. Also full MQA decoding is due to come to the BII soon which also increases it’s attraction. I’ll certainly be updating mine and giving it a listen.
Hope this helps.
PS all my listening was 44.1 redbook CD’s ripped to a NAS. Not sure I get the “SACD I2S” comment. I don’t have any of my SACD’s ripped and my Oppo 105 doesn’t support I2S over HDMI.
If you look over at CA the SU-1 has a fairly loyal fanbase as a USB to I2S DDC that’s improving the SQ into I2S capable DACs like the DirectStream and the Holo Spring