The Alto Cross-brace comprises two stainless-steel plates bonded with a layer of AVDC lamination that traps masking vibration and turns it into heat.

The cross-brace is the mounting bracket for internal power supplies such as the Alto PSU, Valhalla and Majik, or for the connector boards for external power supplies such as the Lingo.

The Alto Cross-brace stiffens the plinth as well as isolating the oscillators on internal power supplies from vibration. Removing vibration at this point helps the power supply provide more accurate control of motor timing.