Fifine Headphone Amplifier 4 Channels Metal Stereo Audio Amplifier,Mini Earphone Splitter with Power Adapter-4x Quarter Inch Balanced TRS Headphones Output and TRS Audio Input for Sound Mixer-N6 auspowers_batchsix Polycom IP Phones VVX 300

Polycom IP Phones VVX 300

Dual Phone port fast charging Adopt upgraded version of C89 terminal

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Fifine Headphone Amplifier 4 Channels Metal Stereo Audio Amplifier,Mini Earphone Splitter with Power Adapter-4x Quarter Inch Balanced TRS Headphones Output and TRS Audio Input for Sound Mixer-N6 auspowers_batchsix Polycom IP Phones VVX 300Fifine Headphone Amplifier 4 Channels Metal Stereo Audio Amplifier,Mini Earphone Splitter with Power Adapter 4x Quarter Inch Balanced TRS Headphones Output and TRS Audio Input for Sound Mixer N6 Flexible Control Individual level control knob for each output allowing flexible control for different headphones or speakers. Excellent Sound Quality This compact 4 channel amplifier can hold 4 pairs of headphones & maintain the clarity of sound. Build Like A