what would you change if anything, in this set up?


here is my set up- Wondering if this all seems paired correctly to you guys and if there is any particular area I should consider to improve the set up. I am happy with the sound in general but sometimes I feel like it's lacking gain on the digital side of things (no issues with gain on vinyl AT ALL) and in general I feel it can lack the WOW factor I'd hoped for. I listen to a range of old and new rock: (Beatles/Stones/Radiohead/Tom Waits/Amy Winehouse

Integrated amp: Ayre AX-7E
Source 1: Turntable: Pro-Ject RPM 5.1 w/ Ortofon 2M blue cartridge
Source 2: MacBook Pro via USB to DAC
DAC: BelCanto 1.5 (connected via unbalanced RCA to int. amp)
Phone stage: Sutherland PH3D
Speakers: Vienna Acoustic Mozart Grand Symphony SE (connected w/ 'Transparent' speaker cable)

Room:
About 15x15
Wall opposite speakers is mirrored.
Wall to right of speakers is glass floor to ceiling.
Area Rug

Any general advice on speaker placement is also welcome. I have them approx. 6' apart, on either side of a fireplace. Slight toe-in. Speakers are about 10' away from my listening position.

Ok-that's it-
Thanks in advance for any input.
capitalv
The MAC's USB as a source is the weak link on your digital. Also, the USB input on the Bel Canto DAC is an older implementation on an otherwise excellent DAC. The SPDIF inputs on this DAC are definitely superior to the USB input. If you use a good USB to SPDIF converter such as Bel Canto's new asynchronous uLink and then output SPDIF to the DAC, it will be a huge improvement. Also, make sure you use a good USB cable as well. Customers of ours with MacMini's have noticed big improvements using a USB to SPDIF converter such as the Bel Canto uLink or the April Music Stello U3 versus the USB implementation built into their DACs.

Also, as mentioned, use the balanced XLR outputs to your Ayre as well.

This will take your digital playback to a whole new level.

Disclosure. We are Bel Canto and April Music dealers. Other high quality USB to SPDIF converters should provide great results as well.
Srtingreen- Thanks. Wondering why the MacMini is superior to the macbook pro? Would an iMac also be superior to the MBP?
Thanks! Just checked out the uLink online. Liking the idea of upgrading to balanced and adding this piece. Seems to be a good first step before thinking subwoofer and/or new DAC. I appreciate everyones smart input. I will re-post once I implement and experiment with all of your ideas. Thanks everyone.