Belles 21A upgrade


Guys,

I'm considering upgrading my Belles 21A at an authorized dealer overseas, they tell me that the upgrade is much better than the Auricap. Should I go ahead with the upgrade?

Thanks,
Wig
128x128wig
Do you have a source where I can order these tubes? Man too many choices?

Wig
I have a pair of Phillips Jan 5418A never used, are they better than the stock Mullards if the unit comes with Mullards?

Wig
the stock tubes in the belles 21a are mullard cv-4003 i believe.
here is a link to thread discussing tube dealers.
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1239836974&read&keyw&zztube=dealers
I opened up my 21A last night and found out their not Mullards but GE6189/12AU7A. Are these any good!

Wig
My preferred variant is the GE 5814A BLACK PLATE from the mid 1950's. IME though with your pre-amp, you will only get so far rolling the tubes. In order to make it sing, parts need to be upgraded.