2014年8月20日 · the RELIABILITY CONTROLLED Raytheon 5755 / 420a with large getter is different from western electric clear top and Raytheon or Tungsol clear top. Must have large Getter for the very best result to replace the 12ax7 ecc83

This 1959 Western Electric JW 5755 tube is a military spec 420A dual triode. It has smooth gray plates and a windmill getter. The yellow print on the glass reads "JW 5755 Western Electric." Tube tests as new with very low noise and ships in its original box.

A secret NOS treasure! This CK-5755 is made by Western Electric as 420A (which are selling for about $100 in U.S.) but branded for Raytheon as 5755. In fact they have internals identical to 12ax7. They just need a socket adaptor (or rewiring) to achieve real U.S. made NOS 12ax7 tone in Western Electric quality. Outstanding!

The 420A electron tube is a double-triode having separate indirectly heated cathodes. The heater is center-tapped to permit operation from a 6.3 or 12.6 volt

2024年12月30日 · Find many great new & used options and get the best deals for 1pcs new 5755/420A tube matching #D4* at the best online prices at eBay! Free shipping for many products!

And here we have a MONSTROUS tube amplifier- a Wurlitzer 420A. Size wise, it's around 20" by 7" deep.. And- it's HEAVY... I posted the XF numbers in the title.. This one is pretty much self explanatory- you have a HUGE and POWERFUL tube amp, that has multiple input methods, as well as a volume/bass/treble controls already in the circuit

Tube 420A or Röhre 420A ID15378, Triode, vacuum, UX-Base (4 Pins (2 thick, USA 1924, UX) and Power/Output shown. Radio tubes are valves.

Tube 420 or Röhre 420 ID15377, Triode, vacuum, UX-Base (4 Pins (2 thick, USA 1924, UX) and Power/Output shown. Radio tubes are valves.

2025年2月22日 · Western Electric 420A (클리어탑) - 신품- 사진대로 신품입니다. 1950년대 제조품으로, 최초기 타입, 노게터관입니다. - 데이터코드 : 226, 226 -WE420A → 12AX7 에 사용할 수 있도록 해주는 아답타를 사용하면 고품질의 12AX7 음을 즐기실 수 있습니다.

牌号 420A: 美国UNS: S42000: 标准: ASTM F899-2020 外科器械用锻造不锈钢 Wrought Stainless Steels for Surgical Instruments: 归类