The Fostex 6301B is a compact, self-powered personal monitor speaker designed for professional audio environments such as broadcast studios, mobile recording setups, and multimedia production. It features a magnetically shielded 4" full-range cone driver powered by a built-in 10W amplifier, delivering a frequency response of 80 Hz to 13 kHz and a sound pressure level of 84 dB/W at 1 meter. The unit includes an unbalanced 1/4" phone jack input and an EXT SP output for optional external speaker connection, with automatic muting of the internal speaker when engaged. Housed in a rugged die-cast aluminum enclosure, the 6301B is built to withstand the rigors of daily use while maintaining clean, reliable audio monitoring. Its minimal distortion (0.05% at 1W) and low residual noise (-70 dBV) make it a trusted tool for critical listening tasks in compact setups.