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

Listing details

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