User's Manual
8
BP894x OVERVIEW COPY 
Audio-Technica’s innovative BP894x MicroSet® offers the ultimate in low-profile, high-performance 
audio. The ultra-lightweight microphone hooks securely behind either ear and features a rotating 
capsule housing with talk-side indicator for perfect polar pattern placement. With its capacity for 
aiming the cardioid condenser capsule directly at the sound source, the microphone provides 
excellent rejection of outside noise, with exceptional gain-before-feedback when used with live 
sound systems and stage monitors. 
The BP894x MicroSet’s subminiature cardioid condenser capsule delivers extremely intelligible, 
natural audio with a flat, extended frequency response that is ideal for stage and television talent, 
lecturers, and worship leaders. Engineered to stand up to the rigors of day-to-day use, the BP894x 
includes a detachable, field-replaceable cable with a robust connector at the earset and a variety of 
available output terminations. 
BP894x FEATURE BULLETS 
•  Features a rotating capsule housing with talk-side indicator for perfect polar pattern 
placement from either ear 
•  Subminiature cardioid condenser capsule offers extremely intelligible, natural vocal 
reproduction 
•  Inconspicuous, lightweight headset with capsule diameter of just 2.6 mm is ideal for 
applications requiring minimum visibility 
•  Ergonomic under-ear design – the flexible, lightweight, contoured loop hooks behind the ear 
for an ultra-secure, comfortable fit even for those wearing glasses 
•  Detachable, field-replaceable cable with robust connector at the earset and a variety of 
available terminations 
•  Handles high sound pressure levels with ease 
•  Wired version’s power module (AT8545) includes a high-pass filter that provides a steep 
low-frequency attenuation to improve sound pickup without affecting voice quality 
•  Comes with the AT8464x Dual-Ear Adapter Kit that converts the single-ear MicroSet to a 
unit that’s worn on both ears for maximum stability and comfort 
•  Constructed of hypoallergenic materials  
•  Available in black and beige, wired and wireless models: 
BP894x – includes AT8545 power module 
BP894x-TH – same as BP894x, but in "theater" color (beige) 
BP894xcH – less power module; 55" (1.4 m) detachable cable terminated with a screw-
down 4-pin connector for use with Audio-Technica wireless systems featuring cH-style 
connector 
BP894xcH-TH – same as BP894xcH, but in "theater" color (beige) 
BP894xcW – less power module; 55" (1.4 m) detachable cable terminated with a 
locking 4-pin connector for use with Audio-Technica wireless systems featuring cW-
style connector 
BP894xcW-TH – same as BP894xcW, but in "theater" color (beige) 
BP894xcLM3 – less power module; 55" (1.4 m) detachable cable terminated for 
Sennheiser wireless systems using locking 3.5 mm connector 
BP894xcLM3-TH – same as BP894xcLM3, but in "theater" color (beige) 
BP894xcT4 – less power module; 55" (1.4 m) detachable cable terminated with TA4F-
type connector for Shure wireless systems 
BP894xcT4-TH – same as BP894xcT4, but in "theater" color (beige) 










