EX4 4-Channel Stereo Audio Mixer with 99 DSP Effects - Powered Mixer

In this review the EX4 4-Channel Stereo Audio Mixer is presented as a practical, all-in-one solution for small venues, home studios, and mobile DJs who want easy setup and built-in amplification. The standout reason to buy is the combination of a built-in 2x250W amplifier and a 4-channel mixer with +48V phantom power, which removes the need for separate amp racks or external effects units for many common scenarios. For users who need reliable live sound with straightforward Bluetooth streaming and recording to USB, the EX4 delivers a lot of functionality in a single unit.

Key Features

• Built-in Amplifier: The 2x250W @4 output powers passive speakers directly, simplifying setup for small concerts and parties without a separate power amp.
• 4-Channel Mixing: Four XLR/TRS combo inputs accommodate microphones and instruments with balanced or unbalanced connections for flexible stage and studio use.
• +48V Phantom Power: Switchable phantom power supports condenser microphones for recording and speech applications with professional-grade clarity.
• 99 DSP Effects: Onboard DSP with 99 presets provides reverb, delay, and EQ effects for live performance and recording without external processors.
• Bluetooth and USB Playback/Record: Wireless streaming from phones or tablets and USB flash MP3 compatibility allow easy playback and direct recording to a drive or computer.
• Main Output EQ: A 7-band master equalizer lets users fine-tune the overall sound for different rooms and source types.

Who It's For

The EX4 is best suited for solo performers, small bands, churches, and event hosts who want a compact powered mixer with built-in effects and easy Bluetooth streaming. Its integrated amplifier and fan cooling make it a practical choice for venues that need a self-contained PA without a large footprint.

Users who require high-channel counts, rackmount modularity, or very long Bluetooth range should look elsewhere; the Bluetooth range is about 15 ft and the unit is optimized for convenience and value rather than expansive studio routing or large-scale touring setups.

Pros & Cons

Pros

• Integrated 2x250W amplifier removes the need for a separate power amp in many setups.
• Four XLR/TRS combo inputs and switchable +48V phantom power support microphones and instruments with professional wiring options.
• Built-in DSP with 99 presets and a 7-band master EQ provide flexible tonal shaping for live and recorded sound.
• Bluetooth streaming and USB flash compatibility make media playback and simple recording convenient.

Cons

• Bluetooth range is limited to around 15 ft, which may be restrictive for some venue layouts.
• Not intended as a large-format touring mixer; users needing many more channels or advanced routing should consider larger consoles.

Specifications

Product Type	4-channel powered mixer
Power Output	250W x 2 @4
Inputs	4 x XLR/TRS combo jacks (mic/instrument)
Phantom Power	+48V switchable
DSP Effects	99 preset DSP effects
Connectivity	Bluetooth (approx 15 ft), USB/flash reader, AUX out
Master EQ	7-band graphic equalizer

Our Verdict

The EX4 is a strong value for small venues and home studios that need a self-contained powered mixer with effects, phantom power, and simple wireless streaming. Its built-in amplifier and flexible I/O reduce gear needs and setup time, making it a sensible purchase for gigging musicians and event hosts who prioritize convenience and sound shaping over large channel counts.

Frequently Asked Questions

Can I power passive speakers directly from this mixer?
Yes. The EX4 includes a built-in 2x250W amplifier designed to drive passive speakers directly in small to medium spaces.

Does it support condenser microphones?
Yes. There is a switchable +48V phantom power supply for condenser mics on the XLR inputs.

Can I stream music from my phone?
Yes. Bluetooth streaming is supported with basic playback controls, with an approximate effective range of 15 ft.