Addasound ADD-DN1200 Multi-functional amplifier- USB powered;

- Reduction of noise picked up by microphone to highlight voice clarity- DSP (Digital Signal Processing) enables the user to enhance the voice clarity and reduce the echo digitally- Premium volume control button to adjust the incoming calls- Compatible with most desk phones and soft phones- Easily switch from handset to headset- Easy access to incoming and outgoing volume and the ability to mute calls- Dual connectivity for both desk phone and soft phone usage- Dual headset jacks to connect two headsets for training- Hearing protection to keep the user from sudden sound spikes- Power adapter offered as optional accessory