Dartzeel 18NS, Dagostino Momentum preamp, Conrad Johnson GAT and EAR 868. All are superb partners but expensive. I no longer have the Dagostino but it is an amazing sounding preamp.
I think you have to be patient. It looks like they are in the process of changing over to direct sales with a dual voltage version. The price will be going up to $1700 US but I think shipping will be included. Their website is jobsys.com
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