Apollo 2200 Amplifier Apollo 2200 Amp

Compatible with most single or multi line telephones Microphone volume control Speaker volume control Provides enhanced digital audio sound quality Excellent noise control and shock protection circuitry Online muting and low battery LED indicator Separate microphone and speaker gaincompatibility controls Power saving mode selection switch Mute and headset to handset buttons Powered by either an AC power supply or two AA batteries Headset stand tower included