External DAC For Oppo 105 At What Cost?

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I'm aware of the Modwright mods. I'm more specifically interested as to how much I would have to spend to significantly better the dac in the Oppo 105.

Is anyone out there using an external DAC with the Oppo 105? If so, what are you using?
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Sure...I understand. My point was/is only "what if the Modwright version sounds better than the stock 105 with a better DAC?"

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Jfz, you know it doesn't end there. If I got it modified by Modwright, I'd probably still want to know how much I'd have to spend to significantly better the DAC in the modded unit. As far as I know Modwright doesn't do any mods to the DAC.
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I bought an Oppo 105 to use as a coax digital output to feed a dac. Can't say what the difference was/is because I haven't bothered using it on its own...I wanted to know it was (supposed to be) good all alone in case I felt like giving it a try someday but mostly as a back-up if I ever had any dac issues...My dac is a brand new Lampizator Level 4 Gen 4 and it's spectacular...I honestly can't imagine better (I gave up my Bryston BDA-1 for it which I really enjoyed...) it is truly a marvel. Maybe the Oppo is darn good? But I can't help you answer that at the moment. All told I have approximately 176 of the 200 required break-in hours and I couldn't be happier with the combo. (Yes, I know I could have paid a fraction of the price for something else as a transport/coax output but the reviews of the Oppo lead me to believe it was a good price/performance ratio for my system if I ever had to rely on it alone for any stretch of time). Good luck with your decision.

Forgot to add FYI the Lampizator ranges from about $5K - $6K depending on options.