Though I have not personally heard either, from the available data, the VTL *should* have better pre-amp performance, namely better noise performance. From the known literature, the VTL has a shorter signal path, which is in-line with the typical audiophile desires. I believe the Achilles' heel in the ARC topology is the choice of integrated circuit for remote volume control [These devices are readily available from Digikey for a few bucks. These IC's contain numerous active elements (op amps), of which are in the signal path]. The VTL has only a "95-step 70dB discrete relay attenuator for all attenuation functions" - ripped from the website.
I would think for a $10k unit a more robust solution would have been implemented for the actual signal attenuation. The chosen design is quite inexpensive, and is a poor choice IMHO, and as always YMMV.
I would think for a $10k unit a more robust solution would have been implemented for the actual signal attenuation. The chosen design is quite inexpensive, and is a poor choice IMHO, and as always YMMV.