The 20A is not a "hybrid" preamp - it is a pure tube design. It is excellent for the money, and includes remote volume and mute. It also has a full record loop (which can be monitoring a different source than the listener) and a home theater bypass. I think this is another classic Dave Belles design with great sound and cosmetics. It has been pretty popular for us.
Personally I think that the EH tubes are very good, but there are probably people here who will recommend all sorts of NOS replacements.
Personally I think that the EH tubes are very good, but there are probably people here who will recommend all sorts of NOS replacements.