Check the listing for details. Apex Electronics APEX575 Low-Profile Headset Condenser Microphone. Condition: New. Listed at 119.99 USD. The Apex575 is a lightweight, low-profile headset microphone designed specifically for theatrical or presentation applications. The Apex575 converts quickly and easily from a single ear 'neck-worn' microphone to a secure wrap-around head-worn microphone with the Apex EA01 headset adaptor, included in the Apex575 package. Four detachable 1.5m (5’) cable assemblies also included with the Apex575 outfit offer direct connectivity to the most popular wireless transmitters available today. The included TA3F, TA4F, Locking Four-pin and locking 1/8th-inch TRS Jacks ensure the Apex575 is compatible with wireless units from Shure, Line 6, AKG, Sennheiser and Audio-Technica right out of the box. Additional optional cables are available for Line 6 V30/35 systems (TRS 1/4-inch) and Beyerdynamic wireless transmitters.FeaturesUltra Lightweight ‘Invisible’ Low-Profile Neck-Worn MicrophoneCompatible with Virtually All Wireless Beltpack TransmittersConverts to Secure Head-Worn Microphone with Apex 575 Headset Adaptor (Included)Detachable 1.5m (5ft) Cable Assemblies with Interchangeable Connectors (TA3F, TA4F, Locking Four-pin and locking 1/8th-inch TRS Jacks Included)Easily Form Fitted for Maximum ComfortOmnidirectional Polar PatternIncludes Vinyl Carrying CaseSpecificationsElement: Back Electret CondenserPolar Pattern: OmnidirectionalFrequency Response: 50Hz to 18,000HzSensitivity: -60dB (+/- 3dB, 0dB = 1v/ubar@1kHz)Impedance: 1500 ohms =/- 30% @ 1kHzConnection, Apex570 black cable with:Shure TA4FAT 8521AKG TA3FSennheiser 8523Operating Voltage: 1 – 10v DCWeight: 8g (without Cable)