RCA Model 74 “Junior Velocity” Microphone - RCA introduced the first of its ribbon velocity microphones in the early 1930’s (the 44, the PB-31, the PB-90, and several others). They were expensive, high quality units intended primarily for broadcast, film, and recording work. They saw a market for a smaller, less expensive model for less demanding applications, and so the “Junior Velocity” microphone was developed. It was introduced in 1935 and remained in production through the 1950’s. This RCA microphone sounds just as great as it did the day it was made. This microphone belongs to Hyde Street Studios.