An audio interface is the box that connects microphones, guitars and studio speakers to your computer. It's the heart of any home studio, and the difference between a muddy laptop recording and a clean, professional one.
Most home producers only need two good inputs, but it pays to think about what you'll record next year as well as today. We've picked four interfaces available on Amazon UK, from a simple one-mic setup to four inputs for recording with friends.
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Our picks at a glance
Best overall:Focusrite Scarlett 2i2 4th Gen. Two inputs with Auto Gain and Clip Safe, so beginners get clean recordings without fiddling.
Budget pick:Audient iD4 MkII. An Audient console-style preamp and a dedicated guitar input in a small, affordable box.
Best for more inputs:Audient EVO 8. Four mic preamps and automatic level setting, for recording with friends or a small drum kit.
Best for vocals:Solid State Logic SSL 2+ MKII. SSL's 4K button adds analogue-style sparkle, with MIDI in/out and a second headphone mix.
Side-by-side comparison
Focusrite Scarlett 2i2 4th Gen
Audient iD4 MkII
Audient EVO 8
Solid State Logic SSL 2+ MKII
Price tier
Mid-range
Budget
Mid-range
Mid-range
Mic inputs
2
1
4
2
Instrument inputs
2 (combo)
1 (JFET)
1
2 (combo)
Headphone outputs
1
2
2
2
Automatic levels
Auto Gain
No
Smartgain
No
MIDI
No
No
No
In and out
Connection
USB-C
USB-C
USB-C
USB-C
1. Best overall: Focusrite Scarlett 2i2 4th Gen
The Scarlett 2i2 is the interface most people start with, and the 4th generation makes it even easier. Its two inputs take a microphone or a guitar each, with up to 69 dB of preamp gain for quieter mics. Auto Gain listens and sets your recording level for you, and Clip Safe reacts if you suddenly get louder, two features that prevent the most common beginner mistakes. Air mode adds a little presence to vocals. It's bus-powered over USB-C and comes with a generous software bundle. MusicRadar names it its best audio interface overall.
Key features
Two mic/line/instrument inputs
Auto Gain and Clip Safe
Air mode for vocals
24-bit/192 kHz, USB-C bus-powered
Software bundle including Ableton Live Lite
Great for
Singer-songwriters
Recording vocals and guitar
First home studio
Not ideal for
Recording more than two sources at once
Studios with hardware MIDI gear
Worth knowing: No MIDI ports. The Focusrite Control app shows gain without numbers.
If you record one microphone and one guitar, the iD4 MkII gives you better-than-its-price preamp quality. Its mic input uses the same style of preamp as Audient's mixing consoles, the instrument input is a separate JFET input tuned for guitars and basses, and there are two headphone outputs so two people can listen. The big volume knob can also work as a scroll wheel in your music software. Sound On Sound sums it up as a one-person interface, and that's exactly who it's for.
Key features
Audient console-style mic preamp
JFET instrument input
Two headphone outputs
Volume knob doubles as a scroll wheel
USB-C
Great for
One mic plus one guitar
Tight budgets
Home producers working alone
Not ideal for
Recording two microphones at once
Anyone who needs MIDI
Worth knowing: Only one microphone input. Sold by a third-party seller on Amazon; check the returns terms.
The EVO 8 gives you four microphone preamps for about what many brands charge for two. Its Smartgain feature listens to each input for a few seconds and sets all the levels automatically, which is a real help when you're recording several people at once. There are two headphone outputs with separate mixes and a loopback feature for streaming. Sound On Sound notes the plastic case and the lack of level meters on the unit itself, but for a duo, a podcast with guests or a simple drum setup it's hard to beat for the money.
Key features
Four mic/line preamps plus an instrument input
Smartgain automatic levels
Two headphone outputs with separate mixes
Loopback for streaming
USB-C
Great for
Recording two to four people
Small drum kits
Podcasts with guests
Not ideal for
People who want level meters on the hardware
Very high sample-rate work
Worth knowing: Plastic case. You check levels in the software rather than on the unit.
SSL made the mixing consoles behind countless classic records, and the 2+ MKII brings a taste of that to a desktop interface. Each of its two inputs has a 4K button that adds subtle analogue-style saturation and lift to vocals and guitars. Unlike the Scarlett, it has five-pin MIDI in and out for hardware synths, plus a second headphone output that can play its own mix. MusicRadar names it its best interface for vocals. It's a step up rather than a beginner box, but still easy to use.
Key features
4K analogue colour on each input
Five-pin MIDI in and out
Two headphone outputs with separate mixes
Loopback
USB-C
Great for
Vocalists
Studios with hardware synths or drum machines
Two-person sessions
Not ideal for
Recording more than two microphones
Anyone who wants a metal case
Worth knowing: Plastic build. This listing is sold and dispatched by Amazon US, so delivery may take longer.
Think about the most sources you'll record at the same time. One vocal and one guitar needs two inputs. A singer who plays guitar into a mic and records the guitar's pickup also needs two. A duo, a podcast with guests or a drum kit needs four or more.
Preamps matter more than sample rate
Every interface here records at studio quality. What makes a bigger difference is the mic preamp: how much clean gain it gives, and how it sounds. Quiet dynamic microphones, like the Shure SM7B, need more gain than condensers.
Do you need MIDI ports?
Modern MIDI keyboards connect over USB, so most people don't need MIDI ports. If you have older keyboards, hardware synths or drum machines with five-pin MIDI sockets, choose an interface that has them.
Headphone outputs for two
If you record other people, a second headphone output lets the performer and you listen at the same time, ideally with separate volume.
How we chose
We started with interfaces recommended by independent music publications including MusicRadar, Sound On Sound and MusicTech, then checked which are currently available on Amazon UK. We compared inputs, preamp features, outputs, MIDI, connection and bundled software, and picked one interface for each common home-studio need.
We haven't tested these interfaces in person. Our picks are based on manufacturer specifications, independent reviews and listing information, which we checked on 16 October 2026. Prices and availability change, so always check the details on Amazon before buying.
Frequently asked questions
Do I need an audio interface if I have a USB microphone?
Not to get started. A USB microphone plugs straight into your computer. An interface becomes worthwhile when you want to use XLR studio microphones, record guitar, connect studio monitors or record more than one source at once.
Will these work with my Mac or Windows PC?
Yes. All four work with current Mac and Windows computers over USB-C. Check the manufacturer's site for drivers on Windows and the minimum operating system version.
What about Universal Audio's Apollo or Volt interfaces?
Universal Audio's Apollo interfaces are excellent but rarely available on Amazon UK, and its new Volt Gen 2 range launched in October 2026. We'll look at them as availability settles.
Why don't you show prices?
Prices on Amazon change often, and we only want to show you accurate information. Use the 'Check price on Amazon' buttons to see the current price and delivery options.
Related buying guides
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The Best Microphones for Home Recording: Four microphones for recording vocals, podcasts and instruments at home, from the budget AT2020 to the Shure SM7dB for untreated rooms, compared side by side.
The Best Studio Monitors for Home Studios: Four studio monitors for mixing at home, from the budget JBL 305P MkII and compact iLoud Micro Monitor Pro to ADAM Audio's T5V and A7V, compared side by side.