HA400 4-Channel Mini Stereo Headphone Amplifier

Share your audio with up to four people at once — the HA400 Mini Stereo Headphone Amplifier delivers clean, balanced sound through four independent 3.5mm headphone outputs from a single stereo source. Built with a sturdy metal housing and a compact footprint, it fits neatly on any desk, studio setup, or entertainment station without getting in the way.

Why You'll Love It

4 Independent Headphone Outputs — connect up to four pairs of headphones simultaneously, perfect for group listening, classrooms, studios, or shared workspaces.
Individual Volume Control — each output channel has its own volume knob, so every listener can set their preferred level independently.
1 Stereo Input — a single 3.5mm stereo input accepts signal from phones, tablets, computers, music players, and more.
Metal Construction — durable metal housing provides excellent shielding against interference for cleaner audio.
Ultra-Compact Design — the slim, lightweight body takes up minimal space and is easy to carry or store.
4 Color Options — choose the finish that best matches your style or setup.
Power Adapter Included — comes with both EU and US plug adapters for broad compatibility.

Specifications

Model	HA400
Input Channels	1 × Stereo (3.5mm)
Output Channels	4 × Independent (3.5mm)
Volume Control	Independent per output
Housing Material	Metal
Plug Compatibility	EU & US adapters included
Color Options	4 available

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Frequently Asked Questions

Q: What does the HA400 4-Channel Headphone Amplifier do?

A: The HA400 Mini Stereo Headphone Amplifier takes a single stereo audio input and distributes it to four independent 3.5mm headphone outputs. It allows up to four listeners to enjoy the same audio source simultaneously, making it ideal for classrooms, studios, offices, and collaborative listening sessions.

Q: Can each listener control their own volume on the HA400?

A: Yes! Each of the four output channels features its own dedicated volume knob, allowing every listener to independently adjust their preferred listening level without affecting the others.

Q: What devices are compatible with the HA400 headphone amplifier?

A: The HA400 works with any device that has a standard 3.5mm stereo audio output, including smartphones, tablets, laptops, desktop computers, CD players, and digital audio players.

Q: Does the HA400 come with a power adapter?

A: Yes, the HA400 includes a power adapter with both EU and US plug adapters, making it ready to use right out of the box in most countries.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.