Improve your hearing with the PHPHA66 is a quality assistive listening system that works anywhere, from at home to specially equipped movie cinemas, theaters, and museums. Superior quality audio is made possible via the IR light signal from the transmitter/docking station and can be brought in via the auxiliary/line input and mic input from any number of audio sources. This device easily connects to the audio output jacks of VCR's, most TV's, DVD players, CD players, and other compatible audio devices. With features including balance, volume, and tone controls, you will be able to adjust the sound to meet all of your needs. System includes (2) audio transmitters and (2) charging dock receivers. Never miss a moment with the PHPHA66. DETAILSTransmitter: Includes Dual Dock Transmitter Noise Reduction Circuitry To Reduce Background Noise Low Pass Filter To Reduce High Frequencies Limiter Circuitry To Eliminate Peaks In The Signal Powerful IR Transmitter Lithium-Ion Charge & Auto Switch-Off Function Receiver: Includes 2 Hearing Assistance Receivers High S/N, Noise Reduction Function (=70dB) Balance Adjustment & Tone Adjustment Normal Hearing Amplifier Function Wired Headphone With Hearing Amplifier Built-In Lithium-Ion Battery Docking Station Recharges Transmitters Frequency: 2.3MHz;dB:= 120dB, max 125dB. MANUALS & DOWNLOADSPHPHA66 - Manuals