You have a great DAC that does redbook extremely well, very analog like presentation. You could do what I did and stand pat, using your existing player as a transport, while sending the AM off to TRL for their mods. TRL has done a couple of AM DACs and the results are pretty amazing. You can read my review where I compared the TRL modded AM to a stock one I had (the D1, not D2 though).
Another option would be to get a really good transport. If you go used, you could find a pretty good one. There are occasionally some CEC transports that come up in your price range. Now that would be an interesting combination to hear, CEC and AM. Also, some Pioneer players are less expensive and are known for their excellent transports. With the extra money you could improve your digital cable.
Another option would be to get a really good transport. If you go used, you could find a pretty good one. There are occasionally some CEC transports that come up in your price range. Now that would be an interesting combination to hear, CEC and AM. Also, some Pioneer players are less expensive and are known for their excellent transports. With the extra money you could improve your digital cable.