Dynavector is a Tokyo-based maker of high end audio cartridges for LP and turntable use. This brand goes way back to the early days of audiophilia and high end playback via LP.
Notable Dynavector products include:
Dynavector DV-20X2 moving coil cartridge that has a frequency response of 20Hz to 20kHz.
Dynavector DV 507 MkII tonearm
Dynavector P-75 MkII pre-amp/phono enhancer