(!!) (slightly microphonci single) 12BZ7 RCA gray plates NOS 1960's (2.0/2.3ma)
$ 19.99
1 low noise slightly microphonic tube) 12BZ7 RCA gray plates NOS 1960's
2.0ma Gm=3200
2.3ma Gm=3500
(Max ratings: 300Vplate, 1.5 watts)
(Vfil=12.6V @ 300ma)
(Typical Operation Class A amp: Vplate=250V, Vgrid=-2V, Ip=2.5ma, Rp=31.8Kohms, Gm=3200, Mu=100)
(The 12BZ7 has been subbed for a 12AX7 in some circuits)
(The 12BZ7 has 2 times the Gm (3200 versus 1600) and lower plate resistance (31K versus 62K)
and higher filament current (300ma versus 150ma) than a 12AX7)
(The 12BZ7 was designed primarily for use as a sync separator and sync amplifier in television receivers. It is also useful in clipping circuits and as a general purpose audio amplifer)
- Cary V12R amp
- Cary PH-301 phono
- Cary Rocket 88R
- Audio Electronics Supply/Cary Six Pacs
See more: vacuum tube
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 (slightly microphonci single) 12BZ7 RCA gray plates NOS 1960's (2.0/2.3ma) "Pin It")