These NOS tubes are in a pristine condition. I bought them years back for some project that never took place... Their values are showing on stickers (primary picture). These are well-balanced …

2018年3月18日 · 从12bh7与6gu7的参数与曲线比较，二管参数特性比较接近。可以代换！ 只是使用效果就不清楚！请有使用过此二管的老师说说！

The all-new TAD 12BH7A REDBASE combines the best sonic and mechanical performance of the NOS RCA black plate with advantages of the GE version. A maximum of... 12BH7A NOS, …

2014年1月28日 · I almost ordered some EH 12BH7A's but research said they are GE copies. The GE tubes don't have the sound stage that my yellow Sylvanias do. I've got some green label …

12BH7-A: 346Kb / 4P: The 12BH7-A is a miniature medium-mu twin troide designed primarily for use as a vertical-deflection amplifier in television receivers

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Description: The 12BH7-A is a miniature medium-mu twin troide designed primarily for use as a vertical-deflection amplifier in television receivers. Manufacturer: General Semiconductor. …

Brand: GE. Type: 12BH7A. Manufacturer and factory: GENERAL ELECTRIC USA. Code: 188-5 NM - 188-5 SC. Year of production: 70's Structure's features: Long plates, copper grid posts, …

This less common tube is a great phase inverter tube. It can be compared to a 12AU7 with a higher power handling capacity. It often increases headroom in the PI position. This very well …

1960's GE 12BH7A Tubes, Matched Pair, NOS Testing. These have long gray plates and halo getters. They were made in the 1960's. These were tested on my Dan Nelson calibrated TV …