The R84A was built on the success of the R84 and the legacy of the RCA
designs. Incorporating the same modern JFET electronics and high performance
transformer as used in AEA’s flagship active microphone, the A440, it is optimal
for soft sound sources and classical recording which garners an additional 12dB
of gain. Combined with the luxurious warmth of a Big Ribbon™, the sensitivity and
immunity to impedance-loading offers more flexibility in the choice of preamps,
eludes noise problems in low signal level applications.