Optimal Feet for Meridian 857 RM

Hi Fellow Audiophiles,

I recently got Meridian 857 RM power amplifier. This is a rack-mount version of the Reference Two Channel Power Amplifier 857.

The problem is that the RM version has no feet and I don't want to get a rack for it.

There are no functional differences between RM and Standard version except the feet, which are absent in the RM.

May I ask your advise on which feet to use? The amplifier weight is 35 kg (78 lb).

Thank you in advance.