Micro Acoustic Cartridges

Here’s an excellent summary on the company history and the cartridge(s) construction/design principles: http://www.roger-russell.com/sonopg/micropg.htm

Back in the day I used the following models: QDC-1E, 2002E and 530MP. All were fitted to a very low mass tonearm with knife-edge bearings (Infinity Black Widow). All shared similar basic characteristics: low physical mass, lightning fast transient response and excellent tacking at 1 gram tracking force. (The later very much counter to what we’ve learned since.)