Actually from what I've heard/read the Touch does have much better digital out, uses a different SPDIF output with lower jitter. Fwiw talk on the SB forums is that the Touch sounds pretty darn close to the Transporter.. In any case Duet/DacM would be a great bedroom setup. Sort of what I did when I got my W4S I moved my DacM to my outdoor/porch system.. You gonna love the W4S, give it a good hundred hours ( W4S sez 200 for total break in) but you'll notice right away that the W4S sounds much bigger; wider, deeper, taller, also very colorful not colored but real sounding, dynamic, powerful.. you'll like it :-)