Choosing your first audio interface

The audio interface is the box between a microphone and a computer, and it is the purchase first-time recordists most often get wrong in both directions: too small to ever record a guest, or sized for a band that never turns up. This is how we walk it through at the counter.

Count preamps, not inputs

The big number on the box counts inputs. The number that matters counts mic preamps — the XLR circuits a microphone actually plugs into. Line inputs and digital channels pad the input count, and none of them takes a mic on its own. The Arturia MiniFuse 4 is the honest example on our own shelf: four inputs and four outputs, but two mic preamps. Two microphones is its ceiling until you add outboard preamps. That is not a flaw — the line inputs are exactly right for a stereo synth — but read spec sheets in this order: preamps first, inputs second.

Auto gain matters more than it sounds

Setting input gain is where first recordings die: too hot and the take clips beyond repair, too quiet and you fight hiss later. Audient's EVO range has Smartgain — press the button, talk or play for a few seconds, and the interface sets the level itself. On the Audient EVO 4 and Audient EVO 8 this removes the single step that ruins the most beginner takes. If nobody in the room has set gain before, that button is a better reason to buy than any converter spec.

The small boxes, mapped

The Arturia MiniFuse 1 has one preamp and a built-in USB hub. It suits a voice-over desk or a streamer with one mic, and nobody else. Do not buy it if there is any chance you will record two sources at once — a podcast guest, a voice next to a mic'd guitar. There is no second preamp and no way to add one; you would be selling it within the year.

The EVO 4 gives you two preamps, Smartgain and loopback for the same shelf space. It is our default answer to "I have never recorded anything before." If you also need the microphone and headphones, the EVO Start Recording Bundle is the same interface with both included.

The Audient iD4 MkII takes the other route: one mic preamp plus a JFET instrument input, in a metal box with a proper monitor knob and a stronger headphone stage. One voice, one plugged-in guitar, recorded well. It is the pick for a solo musician who values sound and build over channel count — and the wrong pick for anyone who owns two microphones.

The Audient iD14 MkII has two preamps and one thing the other small boxes lack: an optical input. Connect an Audient EVO SP8 later and you have eight more preamps down one cable. It is the two-preamp box for people who suspect they will not stay at two.

The tiebreakers: MIDI and loopback

When two boxes tie on preamps, check the back panel. Five-pin MIDI ports exist on the Arturia MiniFuse 2 and MiniFuse 4, and on none of the Audient boxes here. If a hardware synth or a drum machine like the DrumBrute Impact sits on your desk and you would rather sequence it without a USB chain, the MiniFuse 2 wins the two-preamp round on that alone.

Loopback — recording the computer's own audio, for remote interviews or streaming — is the other checkbox. Every interface on this page has it. Plenty of older secondhand interfaces do not, which is worth knowing before a used bargain tempts you.

When to skip straight to four preamps

Buy four preamps when you can name the sources today: a podcast table of three or four voices, a duo recorded live, an acoustic instrument in stereo plus a voice. The EVO 8 covers all of these, keeps Smartgain, and adds a second headphone output so two people can monitor at once. Do not buy four preamps "to grow into" while recording alone — that money does more in a better microphone.

And the honest limit: four preamps do not cover a close-mic'd drum kit. That job starts at eight — an Audient EVO 16, or the iD14 with the SP8 hanging off its optical port.

What we would hand you

• Never recorded before: EVO 4, or the Start Recording Bundle if you own no mic.
• One mic forever, tidy desk: MiniFuse 1 — eyes open about that "forever".
• Synths and drum machines in the room: MiniFuse 2, or MiniFuse 4 for the extra line inputs.
• One voice, recorded as well as it can be: iD4 MkII.
• Two preamps now, ambitions later: iD14 MkII.
• Podcast table or duo sessions: EVO 8.