RCA - 74B Microphones - Studio Addition - Re-ribbon

Adding two RCA 74B microphones after being cleaned up and re-ribboned.  I'll re-ribbon my own mics, but I do not hire out.  I own three RCA 74Bs now and they are very useful ribbon mics.  They sound excellent.

UREI - LA-4 - Studio Addition

Replacing a cracked meter bezel and updating incandescent meter lamps with bright LEDs.  Upgrading the RC-4136 quad opamps.