They weren't able to test out any lossless Dolby TrueHD soundtracks, but uncompressed PCM soundtracks on Sony Blu-ray movies blew away their lossy DD and DTS equivalents.
That amplifier puts out some very clean sound when paired with non-powered speakers, but this is the kind of setup intended for audiophiles looking for a simple secondary system -- exactly the kind of listener who cringes at the thought of lossy, compressed streaming audio.