Shorter Diaphragm Settling Time – will increase a microphone’s ability to pick up subtle low-level sounds and transients. If the diaphragm is still vibrating from the sounds it picked up previously it will tend to mask or color the low level sounds that follow.
Near-Perfect Polar Response – the polar response of conventional microphones is typically poor over their operating frequency range. This causes beaming or spotlighting in addition to deteriorating frequency response with phasing problems on the edges of the polar pattern, resulting in phase cancellations and/or coloration in close multi-miking. Inferior polar response also contributes to acoustic feedback. Near-perfect polar response of Earthworks microphones dramatically reduces these problems.
Extended Frequency Response – A number of studies have shown that acoustic sounds and overtones of musical instruments extend beyond 100kHz. Studies also indicate that sounds beyond 20kHz greatly influence the overall quality of sound we perceive.
Superior Impulse Response – will allow a microphone to reproduce signals with fast transients and rise times with incredible accuracy.
High SPL Handling at Low Distortion – Many conventional microphones will create severe distortion above 120dB SPL. Higher quality microphones must have very low distortion up to and beyond 140dB SPL. This provides far cleaner signals when picking up high level transients from close miked or amplified musical instruments.
Minimum Signal Path – Minimum electronics provide a more pure and unaltered signal. Features such as switchable patterns, pads and hi/low pass filters tend to degrade the sonic qualities of a microphone.
Ability to Feed Long Cable Lengths – Once a microphone has provided a pure signal with extended frequency response, it must reach the other end of a long cable without losses. High current, Class A amplifiers allow driving long cables at very high frequencies without signal loss or slewing.