http://psaudio.com/ Setting the volume levels with a DAC and preamplifier can be somewhat confusing. Is it better to use the digital volume control of the DAC or the analog version of the preamplifier? Have a question you want to ask Paul? I have finished my memoir! You can go read it now: https://www.amazon.com/gp/product/1733583300 It's called 99% True and it is chock full of adventures, debauchery, struggles, heartwarming stories, triumphs and failures, great belly laughs, and a peek inside the high-end audio industry you've never known before. I plan a few surprises for early adopters, so go to https://www.paulmcgowan.com/ and add your name to the list of interested readers. There's an entire gallery of never before seen photos too.