Full disclosure: I'm the importer of the NVO tubed phono stages.
For clarification:
For clarification:
The NVO’s use solid state rectification.
The SPA II (22 tubes total) has two high voltage and four heater bridge rectifiers, the SPA-One (13 tubes total) has one high voltage and two heater bridge rectifiers.
There are more than 40 units in the States and they do come up on the used market from time to time, maybe once or twice a year. Current orders are taking several months to come in due to the pandemic.
A Happy & Healthy New Year to all and please be SAFE!.
Steve
SOS