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Small black rectangular audio mixer with four faders, USB port and quarter-inch mount thread

Maker hart Just Mixer 4 mini 4-channel audio mixer

SKU CH-391R-VCDQB

Portable 4-channel mixer with switchable 48 V phantom and 1.5 V electret power, built-in 24-bit 96 kHz USB audio interface, ¼-20 camera mount, and 115 g weight

  • Spec summary, Maker hart, Black, Portable, , , , USB, 115 g, , , 4321171
  • Power supplyCorded Electric
  • Measurements15 L × 80 W × 15 H millimeters
  • Product typePortable
  • Product weight115 g
  • 24-bit / 96 kHz USB audio capture built in
  • 4 channels with switchable 48 V and 1.5 V phantom power
  • 115 g weight runs from any 5 V USB power bank
  • Individual volume sliders and mute buttons per channel
  • 15 mm × 80 mm × 15 mm body fits ¼-20 UNC camera mount

Portable 4-Channel Mixer for Content Creators

The Maker hart Just Mixer 4 mini is a portable 4-channel audio mixer built for streamers, podcasters and mobile producers. It accepts dynamic, condenser and electret microphones simultaneously via switchable 48 V phantom power and 1.5 V bias power. A built-in 24-bit / 96 kHz USB audio interface connects directly to computers or tablets. The unit weighs 115 grams and measures 15 x 80 x 15 millimetres.

Ideal for Multi-Mic Setups.

This mixer suits creators who need to blend up to four microphones of mixed types on the move. Individual volume sliders and mute buttons give hands-on control per channel, while a headphone output enables real-time monitoring. A ¼-20 UNC thread allows mounting on camera rigs or tripod arms. Users requiring line-level inputs, built-in effects processing or multi-track USB recording should consider other devices.

Four Mic Channels with 24-bit / 96 kHz Conversion

Each of the four channels handles a microphone signal with independent gain staging; the USB interface streams the stereo mix at 24-bit / 96 kHz resolution. Phantom power draws from the 5 V USB supply, so a standard power bank can run the unit for extended sessions. The compact chassis leaves no room for additional I/O, limiting expansion to the four mic preamps and stereo headphone monitor output.

How it compares

Measured against everything we stock in Sound Mixers & Mixing Consoles, at today’s prices. Recalculated every night.

Price $78.99
Cheaper than about 63% of the 270 comparable items (median $114.99).

Specifications

Product
Brand nameMaker hart
Product typePortable
Power
Power supplyCorded Electric
Size & build
Measurements15 L × 80 W × 15 H millimeters
Product weight115 g

Questions about this item

What type of microphone connectors do I need for the four channels?

Each of the four channels accepts condenser microphones with 48 V phantom power, dynamic microphones, or electret microphones with 1.5 V power.

Can I keep using my older dynamic microphones with this mixer?

Yes, dynamic microphones are fully supported alongside condenser and electret types on all four channels.

How do I confirm the USB audio interface is running at 24-bit 96 kHz after setup?

Check your computer’s audio control panel or recording software; it will show the active sample rate and bit depth for the Maker hart device.

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