Review of TEAC NT-505


I purchased the NT-505 about two weeks ago and just posted a review in the Members Review forum if anyone is interested.
http://https//forum.audiogon.com/discussions/teac-nt-505-functional-review
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Is there a fixed volume output setting for using the 505 as a Dac only (feeding and outboard preamp) or do you just turn volume control up to 100%?
I'm looking for a DAC that I can roll discrete opamps. Can a person roll opamps in this unit (that is, use socketed opamps to replace the stock ones)?