The RCA Type 77-DX microphone is a poly-directional ribbon microphone, or pressure-gradient microphone, introduced by the RCA Corporation in 1954. It was preceded by the Type 77-D introduced in 1948. [ 1 ]

Used on countless important recordings by the likes of Elvis Presley, Frank Sinatra, Johnny Cash, and a wealth of others, the RCA 77's unique switchable directionality and inviting tone have cemented its place in history as one of the classics and continues to rise in value.

2009年7月13日 · I think I may be in the market for an RCA 77DX. What do I need to know when buying these classic and fragile mics? Are there certain features that are known to break or wear out?

2020年10月26日 · In radio and TV the RCA 77 series, especially the later models, 77D and 77DX, were very popular. RCA had a beautifully designed art deco style table stand for these mics. They were also used on Floor stands in radio and TV studios.

The RCA 77 DX is a unique multipattern passive ribbon microphone, developed by RCA in the 1950’s. It was a successor to the 77D model, which itself followed several other 77 types. The microphone employs an acoustic labyrinth, with a mechanical shutter behind the ribbon.

☆Serviced RCA 77-DX *Broadcast Version* - Well Maintained Studio Ribbon Microphone

2015年9月24日 · The RCA 77-DX microphone was originally intended for television use, which is why its finish is low-gloss umber-gray enamel – for eliminating glare. HOW IT WAS USED Began for TV and became the “go-to” for most of the early “crooners.”

2002年1月17日 · The RCA 77DX is a great multipattern ribbon mic that can be used on almost any instrument you can think of, with a few warnings: 1. Like any other ribbon mic, it has a very low output, so you better have a preamp with lots of gain and a very low noise floor.