Zoom ZHA-4 4-Channel, Battery-Powered Headphone Amplifier with Volume & Mute Functions, for Podcasting, Music, Production, and More.
Portable, stereo headphone amplifier designed for demanding and critical audio monitoring
4 independent 3.5 mm headphone outputs, each with a dedicated volume control knob
Independent mute buttons for each channel provides the ability to mute each output channel immediately without affecting overall output settings
High versatility of the two-way power system. Powered by either two AA batteries or the USB Type-C connector from USB AC adapter,USB battery pack, or computer USB port