CBS Hytron 12BZ7 NOS Tube - 1952 - Black Plate - Square Getter - Copper Posts - NIB - Testing New

One brand new vintage CBS Hytron 12BZ7 Tube

• Black Plates
• Square Getter
• Copper Posts
• Stencils look good on all tubes available, but condition will vary from tube to tube (some fading is possible)
• In the original box (box is fragile, some are worn and tattered)
• ALL tubes available tested excellent (no gas, shorts or leakage)
• Photos are representative of the tube you will get but some differences can occur. The tube you get will look similar to what you see and will be as described but some variations are possible. For example: Date codes are YYWW. The tubes listed here all have the same YY but the WW code can vary

Goes Great With:

• Cary V12R amp
• Cary PH-301 phono
• Cary Rocket 88R
• Audio Electronics Supply/Cary Six Pacs

Technical Specifications:

(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 amplifier)

Inv # C3-4 81570469