![]() ![]() ![]() Typically we’d reach for a Millennia Media pre, as the sonics of the HV series gear are well-regarded. Otherwise you’d be hearing 10dB of color from the preamp on the U87i track, which would likely mask the subtle difference in the sound of the two microphones.įor this reason we sought a high-fidelity, neutral preamp. ![]() Signal Chainīecause the U87Ai’s output level is ~10dB hotter than the U87i’s, any comparison of these two mics requires a sonically neutral preamp. It also increased the signal-to-noise ratio by 3dB. The voltage change raised the microphone’s sensitivity significantly - from 8mV/Pa to 28mV/Pa (in Cardioid mode), which is worth about 10dB of output level. The ‘A’ revision replaced the battery pack with a DC-DC converter, allowing the mic to generate the 60V that the K67 capsule was designed for. In short, the original U87 had no DC-DC converter, and so the capsule was polarized at about 46V, which is all the 48V phantom power (or onboard battery pack) would provide. Our U87-vs-U87 shootout included sung vocals, voiceover, and acoustic guitar. In this episode of The Microphone Show, we put a vintage Neumann U87i against the current production version of the mic, the Neumann U87Ai. ![]()
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