The PRO 100 Wireless Systems from Audio-Technica come in four versions: handheld, guitar, lavalier and headworn. All four versions use the PRO-R1 receiver that has an advanced dipole antenna, adjustable squelch and 1/4 inch audio output jack. All transmitters have a power-save switch that makes batteries last up to 20 hours.

The PRO 128 Handheld Microphone system includes a ATW-T28 handheld dynamic microphone/transmitter. The microphone has the Audio-Technica Hi-Energy® dynamic element with internal shock mounting. The PRO 127G UniPak™ Guitar system uses the ATW-T27 UniPak™ Transmitter with high impedance input and a AT-GCW input cable. The PRO 127L UniPak™ Lavalier system uses an AT829cW cardioid condenser lavalier microphone and is good for public speaking and business presentations. Finally, the PRO 127H UniPak™ Headworn Microphone System is for active performers such as aerobics teachers or dance music artists. This system features a PRO 8HEcw hypercardioid dynamic headworn microphone.