Yesterday I was comparing the Sonore OpticalRendu streamer with the streamer inside the Lumin X1 DAC. I was using fibre on both, and the fibre came out of my Ubiquiti Network switch or on the second test, an EtherRegen B > A.
The sound was relatively the same, except that the X1 was bit louder. After adjusting for volume, I preferred the OpticalRendu by just a bit because I thought the sound was a bit more refined. Overall, the X1 is a killer package. I wish I had 2 of them for simplicity and great sound.
Both are excellent streamers, the Optical Rendu is relatively cheap, and I think can compete with most streaming competitors.
I have fibre optic streaming using ROON to 3 rooms in the house and 4 DACs, using 3 OpticalRendu’s and 1 Lumin X1. These are all talking to a ROON Core running on a tiny cheap PC hidden behind a door in an office. The streams are all excellent. Fibre is the key to this setup.
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As a side note on the Lumin X1 connected direct to amp and using the LEEDH volume control and external Lumin remote control. I am testing this out now to see if I can forgo a preamp. The key for me for a DAC driving an amp is how does it sound at low volume. The LEEDH is the best sounding DAC direct to amp I have heard though the Benchmark LA4 preamp connected to the X1 seems a bit better.
However, I will use the X1 connected directly to the amp because it is excellent, not the best I have, but excellent, nevertheless. It has a built-in streamer that is almost my best, and the DAC is my fav, over a Musetec 005 and Benchmark DAC3B. I have now eliminated quite a few boxes by going with the X1 for my Livingroom system.