Global Amplifier(TM) GA-100

• Headset/handset switch.
• Mute switch.
• Sliding volume control.
• Supervisor/recording port.
• Built-in limiter/compressor safety circuit.
• Battery saver circuit.
• Smartswitch(TM) circuit for quick disconnect.
• Automatic adjusting sidetone.
• Battery life over one year.
• Easy set-up.
• Adjustable transmit.
• Compatible with almost every business phone.
• Complies with Part 68 requirements...able to withstand abolt of lightning and continue working!

Amplifier(TM) GA-200

• Rotary volume control.
• Supervisor/recording port.
• Nickel-plated 2-prongs
• Modular cable connection.
• Built-in limiter/compressor safety switch.
• Smartswitch(TM) circuit for quick disconnect.
• Automatic adjusting sidetone.
• Easy set-up.
• For 2-prong headset port.
• Complies with the New FCC Part 68 requirements...able to withstand a bolt of lightning and continue working!