Обновленный список.
ECC83/12AX7:
Sylvania - 30$
GE - 30$
Raytheon - 30$
Matsushita - 30$
Mullard - 50$-40$
Miniwatt - 40$
Valvo
Mazda
Telefunken
Ei - 20$
RFT - 15$
Electro-Harmonix - 15$
Sovtek - 15$
GT - 15$
Mesa - 15$
Marshall - 15$
JJ - 15$
Tung-Sol (Russia) - 15$

EL84/6BQ5:
RCA - 30$
Raytheon - 30$
Realistic gold pin - 30$
Sylvania - 30$
Valvo

6V6GT:
RCA - 30$
Sylvania - 30$

ECC81/12AT7, ECC82/12AU7, ECC84, ECC85/6AQ8, ECC40, PCC88, 12AV7, 20EZ7, EZ80/6V4, EZ81/6CA4, GZ34/5AR4, EM84, EAA91, EF80, EF86, 7355, 6AR5, 7199, 6BA6/EF93, 6AU6/EF94, 6BE6/EK90, EC92/6AB4, 6AN8, 6BL8, 6U8A, 6EA8, ECL82/6BM8 и др.