
The Brinkmann Pi cartridge's Benz-Micro heritage was obvious from the get-go. The motor is built to Brinkmann's specifications by Benz-Micro and includes a Micro-Ridge stylus. The cantilever material is not specified. The Pi's output is approximately 0.25mV, and its compliance is moderate at 15µm/mN. Recommended are a tracking force of 1.82gm, a VTA of 23°, and a resistive load of 600 ohms.
Helmut Brinkmann says he tweaked the Pi's design for a year and a half before he achieved the results he desired, including making the tiny set screws out of various materials. The Pi, with a body of machined aluminum designed to control the dissipation of resonant energy, weighs a hefty 14gm. Brinkmann supplies aluminum screws and titanium washers, which, he claims, in combination with special damping between the cartridge body and headshell, have been "sonically tuned to create a unique musical instrument."