(!!!!) (Slightly microphonic) ECC83=12AX7 Amperex Bugle Boy Holland “”long plates”” and “”D”” getter tests like new 1958 (1.2/1.3ma and Gm=1700/1700) 1-3% section balance

1 slightly microphonic low noise tube) ECC83=12AX7 Amperex Bugle Boy Holland “”long plates”” and “”D”” getter tests like new 1958 in white box

1 section) 1.2ma Gm=1700

1 section) 1.3ma Gm=1700

• best sounding 12AX7
• slightly microphonic when tapping on tube

NOS Ma = 1.0ma+

NOS Gm = 1600+