Hi,
yes, it will make a surprising improvement. I especially prefer the asynch DACs... I'm using an Ultra Fi iRoc DAC (which was recommended by another 'goner) and I'm very pleased by the audio quality and complete lack of drop-outs and granularity/glare. Nice. And Larry who makes them is a great guy, extremely knowledgable over a wide-range of audio topics. I'm just a happy customer with no economic connection to Ultra Fi. All the best!