I own this preamp and its matching amp they drive Sonus Faber Serafino's. I am quite happy with their performance and feel they are much better than the 585 integrated amp they replaced. Is there something better, always, it's a matter of how much you want to spend. I cannot address its compatibility with Pass Labs, not made that comparison.
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System: ML:5206,5302 Serafino's Nordost Lumin U1 RM15
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