1 pair) 2A3 RCA black plates D getter halo 1945 era same build

1 tube) 107ma Gm=6800 branded HYTRON

1 tube) 105ma Gm=6700 RCA

RCA:

Test Data: Vplate=230V, Vgrid=-30V

Iplate=105ma Gm=6700

Good NOS range 80-120ma

Test Data: Vplate=250V, Vgrid=-45V

Iplate=52ma Gm=5150

Good NOS range 50-60ma

RCA branded HYTRON:

Test Data: Vplate=230V, Vgrid=-30V

Iplate=107ma Gm=6800

Good NOS range 80-120ma

Test Data: Vplate=250V, Vgrid=-45V

Iplate=52ma Gm=5000

Good NOS range 50-60ma

Recommended for

Tektron, Melody, Bottlehead, Ming Da, Musical Paradise

(NOTE: USN-CRC-2A3 = JAN-CRC-2A3, same construction and all are early to mid 1940's)

- Bottlehead Stereomour 2A3
- Melody

2A3 RCA "Double-Plate" Sonic Description:
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"Very balanced, with great upper midrange extension. Highs are sweet and mids are
musical. This is the classic bi-plate 2A3 and worth every penny, the best double-plate 2A3"