The Bel Canto VBS1 virtual battery power supply can power Bel Canto's DAC 1.5, DAC 3VB or DAC 3.5VB, or the Pre3VB Preamp and CD2 player. It has the capacity to power up to three Bel Canto units simultaneously providing a significant improvement in performance, better bass, quieter backgrounds and an expanded sound stage being several noticeable improvements. I am the original owner of this VBS1. It was recently purchased from an authorized dealer, being just a few weeks old and in as-new condition. Please contact me at firstname.lastname@example.org with any questions. Buyer responsible for shipping and any PP fee.