2. amps-preamps
  3. 1085626942

Question about BC21 6sn7 tubes

I was wondering if someone out there could direct me to a reference that would explain to me the differences between the various 6sn7 tubes. I just bought a BC21 and am new to tubes. Is a 6sn7 the same as a 6sn7w, 6sn7gta, 6sn7gtb, vt-231?

I did a search in the forums and found some bc21 owner's favorite 6sn7 tubes from which I can kind of deduce substitutions but thought maybe there was a more definitive list somewhere.

Many thanks in advance.
tooter

Showing 2 responses by sugarbrie

sugarbrie
3,854 posts
 
Nutella's link is my favorite...

Owning a BC21 myself for many years (and currently in my secondary system) my favorites are...not in any order...

Tung-Sol VT-231
Ken-Rad VT-231
Sylvania 6sn7W (short bottle).

Dennis Boyle's descriptions on that website are very accurate to my ears...
sugarbrie
3,854 posts
 
The stock Philips tube are actually pretty good. I think Rogue use to include them with the "upgraded" version of the Ninety-Nine preamp....

The BC21 is a very simple design, so you are listening to the tube itself in many respects. That makes it a fun unit to roll tubes with.
More to discover