5 Best 4-Channel Audio Interfaces Reviews

4-channel audio interfaces strike a balance between portability and increased inputs, making them ideal for beginners and those on a budget. 

The number of inputs you need depends on your use case, whether for professional studio work or home recording.

Here are the top factors to look at before buying a 4-channel audio interface. A detailed “Buying Guide“ is given below.

• Input and Outputs:- Look for a balance of input and output types (XLR, 1/4″ TRS, etc.) and output options (TRS, headphones, etc.) to connect a variety of audio sources and playback devices.
• Audio Quality and Resolution:- Prioritize audio interfaces with high-resolution support and excellent audio quality.
• USB Types and Cables: The selection of the USB cable and connector type hinges on the particular device and its compatibility. Generally, audio interfaces primarily support USB and USB-C connections.

Also Check:

• Best 16 Channel Audio Interface
• Best 8-Channel Audio Interfaces
• Best Audio Interfaces for Drums

Best 4-Channel Audio Interfaces Table

Best 4-Channel Audio Interfaces	Input Options	Output Options	Resolution	Connectivity	Connectivity
Universal Audio 4-Channel Audio Interface	4-in, 2 pre + 2 line in	4-out, 4 line out	24-bit/192 kHz	USB C	Check On Amazon
Focusrite 4-Channel Audio Interface	4 Line Inputs, SPDIF 1 In, MIDI 1 In,	4 Line Outputs, SPDIF 1 Out, MIDI 1 Out	24-bit/192kHz	USB	Check On Amazon
Behringer 4-Channel Audio Interface	x MIDAS design Type- 4 x XLR/TRS combo connector (Mic/Line/Instrument) Input level attenuation 4 x Pad switch	1 x ¼" stereo (Phones) 2 x ¼" TRS (Main Line Out), 2 x XLR (Main Line Out), 4 x ¼" TRS (Playback Line Out), 4 x RCA (Playback Line Out)	24-Bit/192 kHz	USB B	Check On Amazon
PreSonus 4-Channel Audio Interface	2 line inputs	2 balanced ¼” TRS line output	24-bit/192 kHz	USB C	Check On Amazon
MOTU 4-Channel Audio Interface	XLR, 1/4" TRS, 1/4" TS	1/4" TRS, 1/4" TS, 3.5mm headphone	96 kHz with a 32 sample buffer	USB C	Check On Amazon

Best 4-Channel Audio Interfaces Reviews

1. Universal Audio 4-Channel Audio Interface

UA Volt 4 USB Audio Interface offers 4 channels of audio, this 4-in/4-out interface excels at capturing various sources simultaneously. Whether you’re connecting microphones, instruments, or line-level sources, the Volt 4 provides 48V phantom power, catering to condenser microphones for studio-grade recordings. The integrated studio-quality headphone amplifier facilitates clear and precise monitoring, allowing you to fine-tune your audio with confidence.

UA Volt 4 sets a high standard for audio quality and resolution. Its Vintage Mic Preamp mode emulates the rich sound of an iconic UA tube preamp, infusing your recordings with warmth and character, particularly ideal for vocals, guitars, and various instruments. The interface delivers class-leading 24-bit/192 kHz audio conversion. 

Pros:

• Versatile for music production, live streaming, and podcasting.
• Vintage Mic Preamp mode adds a professional touch.
• Analog compressor enhances audio quality.
• Built with durability in mind.

Cons:

• Preamps may lack sufficient power.

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2. Focusrite 4-Channel Audio Interface

Focusrite Scarlett 8i6 3rd Gen USB Audio Interface offers 4 line outputs and 4 line inputs, this interface is well-equipped to handle multiple audio sources and deliver top-notch sound quality. Additionally, the inclusion of SPDIF 1 in and 1 out ensures digital audio connectivity, while the MIDI input and output ports offer compatibility with MIDI devices.

Scarlett 8i6 excels in both audio quality and resolution, offering studio-grade sound. The high-performance preamps ensure that your recordings are pristine and free from unwanted noise. Furthermore, the interface supports up to 24-bit/192kHz audio resolution, preserving all the sonic details in your recordings. With MIDI inputs and outputs, you can seamlessly connect and control MIDI instruments and devices, expanding your creative possibilities.

Ensures seamless connectivity to your personal computer via USB. This ensures a hassle-free setup and integration into your recording environment. The interface is compatible with a wide range of audio software, providing you with the flexibility to use your preferred digital audio workstation (DAW). 

Pros:

• Efficient for recording multiple XLR inputs simultaneously.
• Sound quality, preamps, bitrate, and sample rate are commendable.
• Simplifies workflow with all cables ready for immediate use.
• MIDI in/out support offers enhanced functionality.
• Easy setup with the Focusrite Control app.

Cons:

• Internal routing and specific needs can be complex for some users.

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3. Behringer 4-Channel Audio Interface

Behringer 4×4 USB Audio/MIDI Interface offers various input and output options to meet your recording needs. With 4×4 USB 2.0 audio/MIDI connectivity, you can effortlessly capture microphones and instruments. On the output side, it provides 1 x ¼” stereo for headphones, 2 x ¼” TRS for main line out, 2 x XLR for main line out, 4 x ¼” TRS for playback line out, and 4 x RCA for additional playback line out. 

Behringer 4 Channel audio interface stands out with its audiophile-grade audio quality, boasting a 24-bit/192 kHz resolution. This ensures that your recordings maintain a high level of detail and professionalism. Furthermore, it features four state-of-the-art MIDAS-designed Mic Preamplifiers, each equipped with +48V phantom power. 

This offers seamless connectivity with your personal computer via USB, making it easy to integrate into your recording setup. It is compatible with both Mac OS and Windows XP or higher, ensuring it works with a wide range of systems. Moreover, it’s designed to harmonize with popular recording software, including Avid Pro Tools, Ableton Live, Steinberg Cubase, and more. 

Pros:

• Effortless installation, especially for Mac OS users.
• Competitive audio converters for smooth, detailed sound.
• Quiet and high-quality preamps comparable to API gear.
• Preamp bypass option for external gear.
• Front-facing A/B monitor switch for versatility.

Cons:

• Phantom power switch activates all channels simultaneously.
• Limited headphone output volume.

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4. PreSonus 4-Channel Audio Interface

PreSonus Studio 26c features two pristine XMAX-L solid-state mic preamps for capturing fine audio details. Additionally, the interface includes two high-headroom instrument/line inputs, perfect for recording your favorite instruments. For output, you have two balanced ¼” TRS line outputs for monitor mixing and two balanced ¼” TRS main outputs with front-panel level control. 

This 4-channel audio interface incorporates a MIDI I/O with a standard 5-pin DIN connection, making it compatible with keyboards and other MIDI gear. As for preamps, it features exceptional XMAX-L solid-state mic preamps, offering high-quality and transparent sound capture. The audio quality is top-notch, supporting up to 24-bit/192 kHz recording and playback. 

It includes USB-C to C and USB-C to A cables for easy connectivity. Studio One Artist, the Studio Magic plug-in suite, and Ableton Live Lite software packages are provided with powerful recording and production capabilities, ensuring you have the tools you need to create music with ease.

Pros:

• Exceptional audio quality with up to 24-bit/192 kHz resolution.
• Two high-quality XMAX-L solid-state mic preamps.
• Versatile with MIDI I/O for connecting MIDI gear.
• Low-latency direct monitoring.
• Convenient Cue Mix A/B function for monitoring.

Cons:

• Limited to two XLR inputs for microphones.
• USB-C connectivity may require an adapter for some devices.
• Front-panel level control for main outputs only.

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5. MOTU 4-Channel Audio Interface

Motu 4 channel interface, has 4 input channels, you can connect microphones, guitars, keyboards, and other sound sources simultaneously. This audio interface also offers four output channels, enabling you to connect studio monitors, headphones, and external equipment. 

It is equipped with high-quality preamps that ensure your audio signals are captured with exceptional clarity and precision. These preamps deliver an ultra-clean performance, boasting a measured -129 dBu Equivalent Input Noise (EIN) on the mic inputs, providing a noise-free recording environment. The audio quality is further enhanced by ESS Sabre32 Ultra DAC Technology, delivering a remarkable 120 dB Dynamic Range on its main outputs. 

MOTU M4 offers seamless connectivity via USB-C, making it compatible with both Mac and PC systems. This interface is plug-and-play, eliminating the need for complex setups or drivers, so you can start recording or streaming right away. It also supports a range of software options, including Performer Lite and Live Lite production software, giving you the tools needed to kickstart your creative projects.

Pros:

• Exceptionally clean and high-quality audio recordings with minimal noise.
• Low-latency audio monitoring for rhythm games.
• Simplified audio routing without the need for external mixers.
• Direct monitoring feature for line inputs.

Cons:

• Line inputs on the back of the M4 may have limited gain, requiring volume adjustments.

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Buying Guide for Best 4-Channel Audio Interfaces

1. Input and Output Options

Input and output options refer to the available ports and connectors on an audio interface that allows you to connect various audio sources and playback devices. The choice depends on your intended use and the types of audio sources and devices you want to connect.

Here are common input and output options found on audio interfaces:

Input Options:

• XLR Inputs: These are commonly used for connecting microphones, providing balanced audio input.
• 1/4″ TRS Inputs: These are versatile jacks that accept balanced and unbalanced audio sources, such as instruments or line-level signals.
• 1/4″ TS Inputs: These are primarily used for instrument inputs and unbalanced audio sources.
• MIDI Inputs: MIDI ports are used for connecting MIDI controllers, synthesizers, and other MIDI-equipped devices.

Output Options:

• 1/4″ TRS Outputs: These are used for connecting studio monitors or external amplifiers for playback.
• 1/4″ TS Outputs: Similar to TRS, these are used for various audio output connections.
• 3.5mm Headphone Outputs: These allow you to connect headphones for monitoring and private listening.
• S/PDIF or Optical Outputs: These digital outputs are used for transmitting audio to other digital devices like audio processors or external converters.
• MIDI Outputs: MIDI ports for sending MIDI data to other MIDI-compatible equipment.

2. Audio Quality & Resolution

Check the bit depth and sample rate capabilities of the audio interface. Higher bit depths (e.g., 24-bit) and sample rates (e.g. 96 kHz or 192 kHz) offer greater audio resolution. 

• Pay attention to the preamps, as they play a vital role in capturing the initial audio signal. Clean and low-noise preamps are essential for high-quality recordings. 
• A high SNR ensures minimal background noise in your recordings. Look for an audio interface with a low-noise floor for clean audio.

3. USB Types and Cables

When choosing an audio interface, it’s crucial to understand the various USB types and cables available USB connections come in various types, such as USB-A, USB-B, micro-USB, mini-USB, and USB-C. 

Most probably USB B and USB C are common connectivity seen in audio interfaces. Make sure you choose an audio interface with a USB type that matches your host device’s port.

• USB-A is common on computers,
• USB-B is used on audio interfaces, micro-USB is found on some mobile devices, mini-USB is less common, 
• USB-C is becoming a universal choice for modern technology. Compatibility with your device’s USB port is essential for seamless audio interface connections.

4. Latency Performance 

Latency is the small delay between when a sound is made and when you hear it. 

• Low latency is important because it ensures you hear the sound immediately. It’s crucial for things like live music, recording, and using special effects, so everything stays in sync and sounds good.
• Lower latency figure, usually measured in milliseconds (ms), indicates better real-time performance. Some audio interfaces offer “zero-latency monitoring” features, which allow direct monitoring of the input signal without any perceptible delay.

Best 4-Channel Audio Interface – FAQs

Conclusion

• For a budget-friendly 4-channel audio interface, the Behringer 4-Channel Audio Interface 4×4 USB Audio/MIDI Interface is an excellent choice. It offers various input and output options to cater to your recording needs. 
• For high-quality audio with low latency performance, PreSonus 4-Channel Audio Interface offers a unique feature with its MIDI I/O, featuring a standard 5-pin DIN connection.  Additionally, it provides low-latency direct monitoring, ensuring that you can monitor your audio with minimal delay. 
• For Exceptional Preamp Quality and Plug-and-Play Connectivity, MOTU 4-Channel Audio Interface offers quality preamps. It boasts a measured -129 dBu Equivalent Input Noise (EIN) on the mic inputs, ensuring that your audio signals are captured with remarkable clarity and precision.