A few particularities about one of my favourite if not most favourable Sonus faber creations. “ Ex3ma’s basket is designed to eliminate any sort of resonance or spurious vibrations. It couples solid billets of CNC machined parts coming from two different metals – Avional (Aeronautic grade Aluminum) and Gun Metal (a special kind of brass used for building big guns during World War I) – because their own natural resonance frequencies have the tendency to erase each other if coupled together.”