For checking noise already recorded between spoken phrases, start with the headphone output, the monitor connections you will use and accessible level control. A microphone preamp’s equivalent input noise (EIN) figure does not describe that playback path. If you also record quiet speech, consider published gain and EIN alongside your microphone and room, but do not rank interfaces by figures measured under different conditions. Check the space needed for the unit and its cables, too.
If you mainly inspect existing recordings through headphones or speakers, concentrate on the playback connections, volume control and level feedback. Direct monitoring matters more if you also need to hear a live microphone.
If you record speech as well as edit it, mic gain and EIN can help you screen interfaces. Keep your microphone and recording setup in mind, and check the published measurement conditions before comparing figures.
If the interface must sit beside a keyboard and microphone stand, check its dimensions, power connection and access to the headphone and other sockets. Leave room for connected cables, not just the enclosure.
Decide whether you are primarily playing back existing speech or recording new speech, then check the listening connections and desk fit. Recording specifications become more important when a microphone is part of the task.
| Concern | What to check | Who this matters to |
|---|---|---|
| Recording-path noise | If recording voice, check mic gain, EIN measurement conditions and the inputs needed for your microphone setup. | If I record quiet speech, I need to work out whether noise comes from the recording chain rather than assume the interface alone is responsible. Around 36% of consumers put isolating the noise source first. |
| Monitoring workflow | Check the headphone output, speaker connections and volume control; consider direct monitoring and visible meters if you use a live input. | When I move between playback and a live microphone, I want to hear each path without losing track of levels. Around 29% of consumers primarily value a repeatable monitoring workflow. |
| Desk fit | Measure the enclosure and allow space for cable bends; check where the connections sit. | With little room beside my keyboard, the attached plugs matter as much as the size of the box. Around 21% of consumers put fitting the interface and cables first. |
| Connections and routing | List the inputs and destinations you will actually use; check loopback, MIDI or mobile routing only if your workflow calls for them. | If I also connect streaming software, MIDI equipment or a mobile device, I need the corresponding route rather than extra features I will not use. Around 14% of consumers prioritise a specific connection or routing need. |
EIN describes microphone-preamp noise under stated test conditions, not how quiet every recorded pause will sound. Solid State Logic specifies A-weighting and a 150-ohm termination for the SSL 2 MKII figure; published figures with different conditions do not establish a controlled head-to-head result.
Use gain and EIN to screen options when recording voice, then consider the microphone, room, gain setting and listening path.
Mic-preamp EIN concerns an incoming recording signal. To inspect noise already present in an edited file, you listen through the interface’s headphone or monitor-output path.
If you mostly edit existing recordings, check the outputs and level controls you will use before concentrating on recording-oriented features.
Published chassis dimensions do not include space for USB, monitor, headphone and microphone connectors.
Measure the available desk area with the intended connections in place, including room to reach frequently used controls.
The Scarlett 2i2 4th Gen is a two-input, two-output desktop option for voice recording and headphone or speaker monitoring.
The SSL 2 MKII combines two recording inputs with monitor and headphone outputs and stereo loopback.
The two-input, two-output M2 is relevant if front-panel input and output meters or MIDI connections would help your desk workflow.
The EVO 4 is a compact two-input, two-output option with monitor mix and loopback features.
The MiniFuse 2 OTG is worth examining when your desk setup needs routing between a computer and a phone or tablet.
No. EIN concerns microphone-preamp noise, not the complete recording chain or the output used to hear an existing file. If you record quiet speech, compare the stated test conditions as well as gain; for example, Solid State Logic specifies a 150-ohm termination for the SSL 2 MKII figure. Also consider room and microphone noise, cabling and your listening setup.
No. Playback through the interface’s headphone or speaker outputs is the relevant path for inspecting noise already in a file. Direct monitoring is useful when you also want to hear a live microphone without relying on computer monitoring.
Connect the interface’s left and right monitor outputs to compatible powered speakers or an amplifier, using cables suited to both ends. If your interface and speakers support balanced connections, check the required connector type; Focusrite recommends TRS cables for the balanced speaker outputs on the Scarlett 2i2 4th Gen.
Check the marking and product documentation for the delivery market and the applicable equipment requirements. The UK Department for Business and Trade’s guidance dated 31 March 2026 lists UKCA or CE marking for electrical equipment and electromagnetic compatibility in Great Britain. Northern Ireland has separate arrangements, so check the seller’s documentation for a Northern Ireland delivery rather than applying the Great Britain guidance unchanged.
Not necessarily. Check the exact interface’s USB connection and power requirements against your computer before purchase. Focusrite specifies separate USB data and power requirements for the Scarlett 2i2 4th Gen, including an optional USB-C power connection when the computer cannot provide sufficient power.