Ummm....since you've got the gear all ready to go, why not just record some LPs and hear for your self? It's unlikely that you'll exceed the sonics of the LP, but you may come close to equaling it, and who knows, any accompanying rolloffs on the taped version may sound more 'musical' to you on your rig. This could especially be true for RBCDs. Plus, it's fun watching the tape spin, and you get to play with another medium. Win-win.