So the HD has variable (32 bit digital) volume output?  As in it could be used as a preamp (connected directly to a power amp input)?  Have you tried that configuration?

Not if you go directly from the HP out into your power amp input (by-passing your preamp).   I suggested doing just that back on post #571 (essentially using the HP as a preamp).   Let us all know how it sounds.

Quote: No reason why you couldn't drive a power amp (and speakers) with the headphone output signal.  In theory, the headphone out may be a bit noisier than a standard line out, but in practice that may not be a factor at all.

Quote: Can't the ES9018 in the Invicta play DSD? What's different about the 9018 that enables it to play DSD and the 9023 not?  I always thought those ICs were basically similar, with the 9023 just operating at lower rail voltages. 

Quote: Ok. That's good to know. In his email reply to me, Mark sort of acted like I was the only customer that fee happened to. Would be better to inform customers about it up front.

Quote: I would say almost definitely.  Could also depend on the type of music you listen to (as in rock/pop music is less demanding than classical music). Also the resolving ability of your system could be a factor.

I've had a Concero DAC for several weeks now and could not be more pleased with the SQ.  Highly recommended.   My only minor beef was a $25.25 fee I had to pay the UPS dude that showed up at my door with the package.  He said it was a "brokerage fee".  He gave a number to call if I had any...