Choosing among audio interfaces with four inputs can simplify recording bands, podcasts, interviews, and multi-microphone sessions without requiring a large rack-mounted system.
These 10 options range from compact USB-C models to more expandable interfaces, with differences in preamp quality, connectivity, monitoring, software, and workflow worth considering before you buy.
Best 10 Audio Interfaces with Four Inputs Picks for 2026
Portable Pro FX Hub
- Four discrete preamps plus two Hi-Z inputs
- 37 onboard Synergy Core effects with near-zero latency
- Dual USB-C, ADAT, S/PDIF, and loopback routing
Best For: Mobile producers and streaming-focused small studios
Versatile Studio Starter
Focusrite Scarlett 4i4 4th Gen
- Two mic preamps, two Hi-Z inputs, and four line inputs
- Air mode, Auto Gain, and Clip Safe workflow tools
- Includes MIDI I/O and a broad recording software bundle
Best For: Home studios and multi-instrument producers
Rugged 4x4 Value
- Four MIDAS-designed mic preamps with phantom power
- 4x4 USB audio and MIDI connectivity
- 24-bit/192kHz support in a metal chassis
Best For: Budget home studios needing four mic inputs
Expandable Studio Center
Focusrite Scarlett 18i16 4th Gen
- Four mic preamps, two Hi-Z inputs, and eight line inputs
- ADAT, S/PDIF, MIDI, and 18-in/16-out architecture
- Auto Gain, Clip Safe, and Air modes included
Best For: Growing studios planning extensive expansion
Best All-Around Pick
- Four-channel USB-C interface with two mic and two instrument inputs
- Loopback, balanced outputs, and low-latency monitoring
- Includes Fender amp and effects software access
Best For: Growing creators, guitarists, and flexible home studios
Best Compact Starter
- Two combo inputs for mic, instrument, or line sources
- 24-bit/192 kHz audio with zero-latency monitoring
- Compatible with computers and mobile devices
Best For: Beginners and portable two-input recording setups
Best for Streaming
- Four-channel capture with dual combo inputs and stereo loopback
- Mixes computer audio with live microphones
- Includes phantom power and zero-latency monitoring
Best For: Podcasters, streamers, gamers, and interview setups
Best Two-Input Pick
Focusrite Scarlett 2i2 4th Gen
- Two mic preamps and Hi-Z instrument inputs
- 24-bit/192kHz recording with 120dB dynamic range
- Auto Gain, Clip Safe, Air modes, and bundled software
Best For: Solo musicians recording up to two sources
Best Complete Starter Bundle
Focusrite Scarlett Solo Studio
- Includes condenser microphone and SH-450 headphones
- 24-bit/192kHz recording with 120dB dynamic range
- Air mode and bundled recording software
Best For: Beginners and songwriters building a solo setup
Portable Pro FX Hub – Antelope Audio Zen Quadro
For creators seeking audio interfaces with four inputs, the Antelope Audio Zen Quadro combines four discrete mic preamps, two Hi-Z inputs, onboard effects, and flexible USB-C routing in a compact, bus-powered design. Its DSP and FPGA processing support near-zero-latency monitoring without relying on host CPU resources.
Best For: Mobile producers, small-session recording, streaming, and musicians who want built-in real-time effects.
Pros:
- Four discrete preamps with up to 75 dB of gain and two Hi-Z inputs.
- Includes 37 Synergy Core effects, with more available, running on dedicated hardware.
- Dual USB-C supports computer-plus-mobile or two-computer workflows and loopback.
- Expandable connectivity includes ADAT, S/PDIF, two headphone outputs, and standalone presets.
Cons:
- Its extensive routing and expansion features may be more than a simple home setup needs.
- It is priced and positioned as a feature-rich pro-oriented interface rather than a basic entry-level model.
The Zen Quadro is a strong choice when portability, flexible routing, and onboard processing matter as much as four-input recording. Its conversion and clocking specifications further suit users building a higher-end compact rig.
Versatile Studio Starter – Focusrite Scarlett 4i4 4th Gen
The Focusrite Scarlett 4i4 4th Gen is a practical pick among audio interfaces with four inputs, offering two mic preamps, two Hi-Z instrument inputs, four line inputs, four outputs, and MIDI I/O. It adds useful recording safeguards and an accessible software bundle for a broad range of music setups.
Best For: Home producers, songwriters, and musicians connecting microphones, guitars, synths, and drum machines.
Pros:
- Combines two mic preamps, two Hi-Z inputs, and four line inputs.
- Air mode adds presence and harmonic drive to vocals and guitars.
- Auto Gain and Clip Safe help set levels and reduce clipping risks.
- Includes MIDI I/O and a software bundle with Pro Tools Intro+, Ableton Live Lite, and Cubase LE.
Cons:
- Only two of the inputs are mic preamp inputs, so larger multi-mic sessions need additional gear.
- The included power supply and USB accessories may be less convenient for users seeking a fully bus-powered setup.
With 24-bit/192kHz operation, a stated 120dB dynamic range, and straightforward workflow tools, the Scarlett 4i4 is a well-rounded interface for building a flexible home studio around four-input recording.
Rugged 4×4 Value – Behringer U-PHORIA UMC404HD
The Behringer U-PHORIA UMC404HD delivers a straightforward four-input, four-output setup for recording microphones and instruments. Its four MIDAS-designed mic preamps, 24-bit/192kHz support, MIDI I/O, and metal chassis make it a practical value-oriented option for computer-based recording.
Best For: Budget-conscious home recordists who need four mic preamps and simple USB/MIDI connectivity.
Pros:
- Provides four inputs and four outputs for simultaneous recording and playback.
- Four MIDAS-designed mic preamps include +48V phantom power.
- Supports 24-bit/192kHz resolution and ultra-low-latency operation.
- Impact-resistant metal chassis is designed for durable use.
Cons:
- The supplied notes list operating-system support primarily for Windows and do not specify newer platform compatibility.
- Its feature set is more basic than interfaces with onboard DSP effects or advanced modern routing.
The UMC404HD is compelling when the main requirement is affordable four-mic recording rather than premium workflow features. Its four preamps and MIDI connectivity give a small studio useful coverage without unnecessary complexity.
Expandable Studio Center – Focusrite Scarlett 18i16 4th Gen
Although it offers far more than four inputs, the Focusrite Scarlett 18i16 is worth considering alongside audio interfaces with four inputs because it provides four mic preamps plus extensive expansion. It adds two Hi-Z inputs, eight line inputs, ADAT, S/PDIF, MIDI, and 16 outputs for a growing production setup.
Best For: Producers who need four mic preamps today but expect to expand into larger tracking, synth, or outboard workflows.
Pros:
- Includes four mic preamps, two Hi-Z inputs, and eight line inputs.
- ADAT and S/PDIF support provide digital expansion options.
- Air modes add presence and harmonic drive to vocals and instruments.
- Auto Gain and Clip Safe simplify level setting and help protect takes.
Cons:
- Its 18-input/16-output design is larger and more complex than necessary for users who only need four inputs.
- It requires an external power supply rather than being a compact bus-powered interface.
The Scarlett 18i16 makes the most sense as a forward-looking studio hub. Its four preamps cover common tracking needs, while the additional analog and digital connections leave room for a substantially larger rig.
Best All-Around Pick – Fender Quantum LT 4
The Fender Quantum LT 4 is a versatile choice among audio interfaces with four inputs, combining two MAX-HD microphone preamps with two dedicated instrument inputs. Its USB-C connectivity, loopback routing, balanced outputs, and included Fender software access make it suitable for recording, streaming, and guitar-focused production.
Best For: Growing creators, guitarists, vocalists, and home studios that need flexible four-channel connectivity.
Pros:
- Four-channel design with two high-gain mic preamps and two instrument inputs.
- Supports up to 192 kHz recording and includes low-latency drivers.
- Loopback, balanced TRS outputs, and a powerful headphone amp support streaming and monitoring.
- Includes access to Fender amp and effects software after registration.
Cons:
- Only two of the inputs are dedicated to microphones.
- Some software benefits require registration and a Fender Studio app download.
Choose the Quantum LT 4 if you want four inputs with especially strong guitar connectivity and useful routing for content creation. Its broad macOS and Windows compatibility adds flexibility as your setup grows.
Best Compact Starter – M-AUDIO M-Track Duo HD
The M-AUDIO M-Track Duo HD is a compact, straightforward option for recording, podcasting, and livestreaming. While it has two channels rather than four, its two combo inputs, USB-C connection, 24-bit/192 kHz resolution, and broad device compatibility make it a practical choice for smaller setups.
Best For: Beginners, solo creators, podcasters, and portable two-input recording systems.
Pros:
- Two combo inputs accept microphones, instruments, and line-level sources.
- Offers 24-bit/192 kHz audio and zero-latency monitoring.
- Works with Mac, PC, iOS, and Android devices.
- Includes Ableton Live Lite, MPC Beats, and two months of Splice.
Cons:
- Does not meet a four-input requirement; it has two channels.
- Its one-year warranty is shorter than some competing options.
The M-Track Duo HD is best considered a lower-channel alternative, not a direct match for audio interfaces with four inputs. It makes sense when portability, simple operation, and bundled software matter more than simultaneous multi-source recording.
Best for Streaming – Movo UMX-2
The Movo UMX-2 is a purpose-built option among audio interfaces with four inputs, offering dual XLR/TRS combo inputs plus stereo loopback for capturing microphones and computer audio together. Its direct monitoring, phantom power, and USB-C cables suit podcasts, interviews, and live streaming.
Best For: Podcasters, streamers, gamers, and creators mixing live microphones with computer playback.
Pros:
- Captures up to four channels simultaneously through two inputs and stereo loopback.
- Built-in loopback combines computer audio with live microphone input.
- Zero-latency monitoring includes a mix control for balancing input and playback.
- Dedicated 48V phantom power supports condenser microphones.
Cons:
- Windows users need ASIO driver mode for supported operation.
- The supplied notes specify compatibility with Mac and PC rather than a broader mobile-device range.
- Its one-year warranty is relatively limited.
The UMX-2 stands out when loopback is central to your workflow. It is particularly well matched to spoken-word production and streaming, where combining live microphones with system audio is more important than advanced studio routing.
Best Two-Input Pick – Focusrite Scarlett 2i2 4th Gen
If you need audio interfaces with four inputs, note that the Scarlett 2i2 is a compact two-input alternative rather than a four-channel model. It suits solo creators who prioritize high-quality preamps, simple controls, and reliable recording features.
Best For: Solo musicians, vocalists, and guitarists recording up to two sources at once.
Pros:
- Two mic preamps and two Hi-Z instrument inputs.
- 24-bit/192kHz recording with a 120dB dynamic range.
- Auto Gain, Clip Safe, Air modes, and a strong software bundle.
Cons:
- Only two audio inputs, so it does not meet a strict four-input requirement.
- No microphone or headphones are included.
The 2i2 is a polished choice for a focused home setup, but buyers specifically seeking audio interfaces with four inputs should consider a genuine four-channel model instead.
Best True Four-Channel Value – Depusheng 4-Channel USB Interface
For shoppers comparing audio interfaces with four inputs, the Depusheng provides four combo inputs and four outputs in a home-studio-oriented design. Its 24-bit/192kHz support, ASIO drivers, and phantom power cover common vocal and instrument recording needs.
Best For: Home studios recording multiple microphones, guitars, or line sources simultaneously.
Pros:
- Four combo inputs with XLR and 1/4-inch connectivity.
- 24-bit/192kHz recording, ASIO drivers, and low-latency monitoring.
- +48V phantom power, Hi-Z switches, and four TS main outputs.
Cons:
- The supplied warranty is listed as one year.
- Operating-system support is listed for Windows, so Mac users should verify compatibility.
- It is heavier than the compact Focusrite options at 1 kg.
The Depusheng is the clearest match here for buyers who genuinely need four simultaneous inputs, particularly when flexible monitoring and multiple source types matter more than a compact footprint.
Best Complete Starter Bundle – Focusrite Scarlett Solo Studio
The Scarlett Solo Studio is a ready-to-use recording bundle, but it is not one of the audio interfaces with four inputs: it has one XLR microphone preamp and one Hi-Z instrument input. Its included microphone, headphones, cable, software, and 4th Gen processing make it convenient for getting started quickly.
Best For: Songwriters and beginners who need an interface, microphone, and headphones in one package.
Pros:
- Includes a CM25 MkIII condenser microphone and SH-450 headphones.
- 24-bit/192kHz recording with a 120dB dynamic range.
- Air mode and a broad software bundle support immediate music production.
Cons:
- Only one XLR mic preamp and one instrument input.
- It cannot record four sources simultaneously.
This bundle is practical for a solo setup and offers strong value when the included accessories matter, but a four-input interface is a better fit for bands, multi-mic sessions, or expanded recording setups.
How We Picked the Best Audio Interfaces with Four Inputs
We selected interfaces that support practical multi-input recording and compared their connection formats, input types, microphone preamps, phantom-power support, monitoring features, MIDI connectivity, driver support, and overall flexibility. The list includes true four-input models as well as compact alternatives and expandable interfaces that may suit buyers whose needs could grow.
Specifications can vary by input mode: some interfaces provide four microphone or line inputs, while others combine microphone, instrument, and line connections. Always confirm the exact number of simultaneously usable inputs for your intended setup.
Quick Comparison
| Best For | What to Prioritize | Models to Consider |
|---|---|---|
| Home recording | Clean preamps, direct monitoring, low-latency drivers | Focusrite Scarlett 4i4, Fender Quantum LT 4 |
| Podcasting and interviews | Multiple mic inputs, simple monitoring, reliable USB connection | Movo UMX-2, Behringer UMC404HD |
| Expandable studios | More I/O, software routing, future-proof connectivity | Focusrite Scarlett 18i16 |
| Effects-focused workflows | Built-in or bundled processing and flexible routing | Antelope Audio Zen Quadro |
| Lower-cost setups | Essential inputs, phantom power, compatible drivers | Behringer UMC404HD, Depusheng USB Interface |
Key Buying Factors for Audio Interfaces with Four Inputs
Input Type and Simultaneous Recording
Check whether the interface has four independent inputs or a mixture of inputs that share channels. Combo XLR/TRS sockets are useful because they accept microphones, line-level devices, and instruments, but the available gain range and input selection still matter.
Preamps, Phantom Power, and Instrument Support
Condenser microphones require 48V phantom power, while passive instruments benefit from dedicated high-impedance inputs. If you record vocals and guitar together, look for an interface that offers suitable inputs without requiring adapters or external preamps.
Connection, Drivers, and Latency
USB-C is convenient, but the connector alone does not determine performance. Confirm operating-system compatibility, driver availability, bus power requirements, and whether direct monitoring or low-latency software monitoring fits your workflow.
Outputs and Monitoring
Consider the number of headphone outputs, independent monitor control, balanced line outputs, and MIDI ports. Multiple headphone mixes are especially useful for podcasts, remote guests, and recording sessions where performers need different monitor levels.
Software and Expansion
Bundled recording software, plug-ins, virtual instruments, and routing tools can add significant value. If you expect to add external preamps, keyboards, drum machines, or outboard effects, prioritize expandable I/O over the smallest footprint.
Who Should Buy Which Audio Interfaces with Four Inputs?
Choose a compact four-input interface if you need to record a small group, multiple microphones, or a flexible podcast setup while keeping your desk uncluttered. Models such as the Scarlett 4i4, Quantum LT 4, UMC404HD, and UMX-2 fit this general use case.
Choose an expandable interface if you anticipate adding more microphones, instruments, or external hardware. The Scarlett 18i16 is better suited to a growing studio than a buyer who only needs occasional two-channel recording.
Choose a budget model when basic microphone inputs, phantom power, and dependable computer connectivity matter more than premium routing or extensive software. Choose an effects-oriented model if integrated processing can reduce the need for additional plug-ins during tracking.
Before ordering, verify the input count, connector layout, bundled accessories, computer compatibility, and whether the advertised channels can record simultaneously at the resolution you need.