Critically acclaimed by music producers, AIAIAI UNIT-4 delivers clear, detailed sound with rich bass in a compact, portable design. Its 2-way active monitor combines a 4-inch high-excursion woofer with a 1-inch silk-dome tweeter, providing precision tonal accuracy across a flat ±2dB frequency response from 50Hz to 20kHz. The AIAIAI app also provides a customizable 5-band EQ for shaping the speaker's sound to your environment or listening preference.

UNIT-4 provides complete wireless freedom with Bluetooth 5.2 and more than 20 hours of battery playback. For direct connections, balanced and aux inputs allow you to connect synths, DJ equipment, record players, and other music gear. Its removable steel grille protects the woofer and tweeter.

Designed for portability and long-term use, UNIT-4 weighs just 3 kg and has a compact 3-liter design with an ergonomic carry handle, while the glue-free construction allows key components such as the battery and drive units to be replaced.

Key Features

• 2-way active monitor with 4" high-excursion woofer and 1" silk-dome tweeter.
• Flat ±2dB frequency response from 50Hz to 20kHz for precise tonal accuracy.
• 20+ hours of battery playback with Bluetooth 5.2 wireless connectivity.
• Customizable 5-band EQ through the AIAIAI app.
• Compact 3-liter, 3 kg design with ergonomic carry handle.
• Glue-free construction with replaceable battery and drive units.

Ideal For

• Music producers and home studio monitoring.
• DJs and electronic music performers.
• Synths, DJ equipment, record players, and other music gear.
• Portable listening and mobile creative setups.

What's in the Box

• AIAIAI UNIT-4 wireless portable monitor.
• Drawstring carrying bag.
• User manual.

Inputs & Outputs

• Wireless Input: Bluetooth 5.2.
• Analog Input: 3.5mm mini-jack.
• Balanced Input: 6.3mm balanced TRS.
• Wireless Expansion: X04 transmitter support for zero-delay wireless connection.
• Stereo Connection: Wireless pairing with a second UNIT-4.

How the UNIT-4 Single Compares

UNIT-4 combines portable battery-powered operation with reference-monitor characteristics, making it suitable for both everyday listening and music-focused applications.

Model	Channels	Signal Path	Standout Feature	Price	Best For
AIAIAI UNIT-4 Single (this item)	2-way active monitor	Bluetooth 5.2 + 3.5mm + 6.3mm balanced TRS	Portable studio monitor with 20-hour battery life, 5-band EQ, and W+ Link compatibility	$450	Portable monitoring, DJ setups, synths, and mobile production
AIAIAI UNIT-4 Wireless+ Pair	2-way active stereo pair	W+ Link + Bluetooth 5.2 + analog inputs	Two wireless monitors with uncompressed 16 ms W+ Link audio and 20-hour battery life	$600 sale / $800 regular	Wireless stereo monitoring and mobile studios
AIAIAI UNIT-4 HIDDEN Edition	2-way active monitor	Bluetooth 5.2 + 3.5mm + 6.3mm balanced TRS	Studio-grade portable speaker with 4" woofer, 1" tweeter, and 20-hour battery life	$400	Portable listening and compact creative setups
AIAIAI UNIT-4 BRAIN DEAD Edition	2-way active monitor	Bluetooth 5.2 + analog inputs	Special-edition UNIT-4 with studio-grade sound and battery-powered wireless operation	$400	Creative spaces and portable music setups

Frequently Asked Questions

Does the AIAIAI UNIT-4 have Bluetooth?

Yes. UNIT-4 features Bluetooth 5.2 with SBC and AAC codec support for easy wireless playback from compatible devices.

How long does the UNIT-4 battery last?

UNIT-4 provides 20+ hours of playback on a full charge, with a 77Wh battery and approximately 3-hour charging time via USB-C.

Can I connect music equipment directly to the UNIT-4?

Yes. UNIT-4 includes a 3.5mm mini-jack stereo input and a 6.3mm balanced TRS mono input for synths, DJ equipment, record players, and other audio sources.

Can I use two UNIT-4 speakers together?

Yes. You can pair a second UNIT-4 to create a stereo Bluetooth setup for a wider listening experience.

Can the UNIT-4 be connected wirelessly to music gear?

Yes. Adding an X04 transmitter enables a wireless connection to compatible music gear with low latency and no compression.

Does the UNIT-4 have adjustable EQ?

Yes. The AIAIAI app provides a customizable 5-band EQ, allowing you to adjust the speaker's sound to your environment or personal preference.

Is the UNIT-4 designed to be repairable?

Yes. UNIT-4 uses a glue-free, easy-disassembly design with replaceable batteries and key components, helping extend the speaker's usable life.

Full Technical Specifications

Audio Performance

Frequency Range	40Hz to 40kHz, -10dB
Frequency Response	50Hz - 20kHz ±2dB
Peak SPL	99 dBSPL
Self-Generated Noise	<20dB
THD	<1% nominal, <10% peak output
Crossover Frequency	3 kHz

Wireless Connectivity

Bluetooth Codec	SBC, AAC
Bluetooth Version	5.2
Bluetooth Profiles	A2DP 1.3, AVRCP 1.6

Speaker & Amplification

Enclosure Type	2-way bass reflex
Woofer	4-inch high-excursion paper cone
Tweeter	1-inch silk dome
Amplifier Power	2 x 30W continuous, 2 x 80W peak
DSP	Loudness adaptive bass boost
EQ Adjustment	5-band adjustable EQ via AIAIAI app

Inputs & Power

Analog Inputs	3.5mm mini-jack stereo + 6.3mm TRS balanced mono
Power Supply	USB-C
Charging Time	3 hours
Playback Time on Battery	20 hours
Battery Capacity	77 Wh

Power & Operation

Mains voltage	90–264VAC, 47–63Hz (universal auto-switching)
Rated power consumption	30VA
Fuse	T 0.5A
Operating temperature	23°F to 113°F (-5°C to 45°C)
Humidity	20–90% RH (non-condensing)

Packaging & Included Items

In the Box	UNIT-4 (1 pcs), UNIT-4 Power Supply USB-C (1 pcs), UNIT-4 Protective Pouch (1 pcs)
Packaging Weight (lbs)	9.48
Packaging Dimensions (L x W x H)	8.07" x 7.42" x 14.06"