Well, you can't do much about the glass wall, but that's obviously going to affect things considerably. If it were up to me, I'd think about ways of putting a blind or curtain on that side, one that could be retracted as needed to enjoy the good view and light but then closed at least partially to give some sound absorption.
Can't comment on the digital stuff (I'm mostly a vinyl guy), but if you're able to make some changes, and you're playing a lot of vinyl records, you might think about switching to a more resolving cartridge. Lots of opinions out there on carts, but I like the Dynavector line. Others will chime in with their favorites. The Sutherland phono stage should be fine for cartridge upgrades.
I'd also be thinking about a quality subwoofer. You're a rock music guy, and you'd likely appreciate the bass (and increased soundstaging) provided by this move. See if you can get a dealer to loan you one so you can try it out.
Finally, room permitting, you might want to spread the speakers more than 6 feet if you're sitting 10 feet back.
Good listening to you.
Can't comment on the digital stuff (I'm mostly a vinyl guy), but if you're able to make some changes, and you're playing a lot of vinyl records, you might think about switching to a more resolving cartridge. Lots of opinions out there on carts, but I like the Dynavector line. Others will chime in with their favorites. The Sutherland phono stage should be fine for cartridge upgrades.
I'd also be thinking about a quality subwoofer. You're a rock music guy, and you'd likely appreciate the bass (and increased soundstaging) provided by this move. See if you can get a dealer to loan you one so you can try it out.
Finally, room permitting, you might want to spread the speakers more than 6 feet if you're sitting 10 feet back.
Good listening to you.