Help Please ! I'd  be very glad  if somebody writes his personal opinion at least. I'm lost within all these brands and models.

Hi all,   I recently bought an AD700 and i'm very happy with its soundstage and performance at high notes. Unfortunately, I'm using an onboard realtek soundcard. After few happy days, even with flac records thereafter some amplification i started to hear noise. I decided to buy a dac+amp...

But my main question is about  are these DACs are really necessary for ad700's (Should I expect a significant improvement). I don't want to spent extra 100 dollars to pull up the %90 performance to %100 for example.

Hello,   I've just ordered my AD700 and after reading more, I'm more concerned about my crappy onboard soundcard. I listen jazz (usually not vocal-based) and classical music. i also have ipod nano. My question is --> Are these Amp,ADC or advanced soundcards make a notable difference for a...