Archived from groups: rec.audio.high-end (More info?
the Musical Fidelity NuVista preamp uses 6CW4's -- a nuvistor tube which was
popular as a low noise front end for frequencies above 50MHz. . I used a
nuvistor 50MHz converter for 6m ham radio receiving. It was very quiet.
Take a look at this:http://www.tnt-audio.com/clinica/preamble_n.html
<firstname.lastname@example.org> wrote in message
> Hi all,
> I am about to build a phono pramp and wanted to have a few designs to
> look at for ideas.
> Anyone know of a high-end schematic or circuit description on the web
> that does not use the common receiving tubes such as 12ax7s etc..
> I am looking for something that uses special quality tubes etc.