Dunno why no-one has done this before, or maybe they have but, we've not heard of it. It's a great idea to increase the performance of a micrphone by amplifying the signal level before it heads off down miles of cabling, where it can lose quality and signal strength:
RØDE D-PowerPlug - In Line Cable Mounted Amplifier
The D-PowerPlug is effectively a "Turbo Charger" for Dynamic microphones.
Features an instrumentation grade pre-amplifi er circuit, D-PowerPlug will turn any standard dynamic microphone into a high level electronically balanced output device.
Using conventional microphones with long multi-core cables results in a dramatic loss of signal strength, and of course sound quality due to cable resistance and capacitance.
Powered by standard P48 V, D-PowerPlug can drive cables in excess of 100 m with negligible loss of signal quality or power.
RØDE D-Power - Pre-Amplifier
The D-Power. A retro-fi t instrumentation Pre-Amplifier using the same circuit as the D-PowerPlug.
Just pull out the XLR connector on your favorite mic, solder in D-Power, and you have an active, high level drive, dynamic Stage have an active, high level drive, dynamic Stage or Broadcast mic.
Stars on NT45
The new RØDE NT45 series of interchangeable capsules have been developed in response to the thousands of NT4 and NT5 customers who asked for capsules that offer omni, tailored response cardioid and hyper cardioid polar patterns to fi t to their existing mics.
Designed and manufactured in Australia, the NT45 series offer low noise and distortion as well as high SPL capabilities and allows the professional engineer and musician a new pallet of recording techniques.