(!!!) (Best Pair #1) 2A3 RCA and RCA branded HYTRON black plates D getter halo 1945 era NOS (105ma and 107ma) (sound excellent in SET amp)
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"
 (Best Pair #1) 2A3 RCA and RCA branded HYTRON black plates D getter halo 1945 era NOS (105ma and 107ma) (sound excellent in SET amp)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/3_a474edba-4d24-455a-bd8d-77baf9f09bd2.jpg?v=1776633250){kind=link}
 (Best Pair #1) 2A3 RCA and RCA branded HYTRON black plates D getter halo 1945 era NOS (105ma and 107ma) (sound excellent in SET amp) "Pin It")