Wow so your amp is really very exclusive!
May I ask what it cost you to have it built?
As far as I know, this is only the third bass amp Mal has built. The others are the 40 watt prototype I test drove, and an earlier version of the 100 watt model, but without the dual '64/'66 circuits or DI (or Ampeg blue tolex).
Price for me converts to around 900 Euro. That's less than a "retail" customer would pay though, because Mal gave me a generous discount based on the advice and input I gave on features during the design and build process.