Choose an interface with two usable line-input channels if your keyboard has separate left and right outputs: connect each output to its own channel and set up a stereo recording in your software. A compact two-input interface suits keyboard-only recording, but both channels will be occupied; if you need to record a microphone at the same time, look for more analogue inputs. For a shared desk, check how you will monitor the keyboard through headphones alongside computer playback.
If your keyboard has separate left and right outputs, you want to retain both sides in the recording. Check for two line-capable input channels and plan how to assign them to a stereo track. Focusrite documents a two-cable stereo connection for the Scarlett 2i2 4th Gen.
You need a place for the interface on a shared desk and a way to hear your playing through headphones alongside computer playback. Compare the exact models’ monitoring controls as well as their input arrangements.
You may also want to record voice, capture computer audio or use a mobile device. Check those features on the exact model, and remember that a stereo keyboard occupies both analogue channels of a two-input interface.
For a keyboard with separate left and right outputs, establish the input arrangement first, then decide whether shared-desk monitoring or recording more sources at once is your next priority.
| Concern | What to check | Who this matters to |
|---|---|---|
| Keeping left and right separate | Confirm two usable line-input channels and a way to record inputs 1 and 2 as a stereo pair. | I want my keyboard’s separate outputs to stay separate in the recording rather than use a single input. Around 45% of consumers would put stereo preservation first. |
| Monitoring at a shared desk | Check the headphone connection and whether direct monitoring or an input/playback mix is available. | When someone else shares the desk, I want to play through headphones and still hear computer playback. For roughly 33% of consumers, straightforward monitoring would be the main concern. |
| Recording other sources | Count the analogue inputs needed at once; verify loopback and device compatibility on the exact model if relevant. | I may want to record a vocal alongside both sides of the keyboard, so two inputs would not cover everything at once. About 22% of consumers would prioritise room for additional recording needs. |
A two-input label does not describe what signal each socket accepts. Steinberg distinguishes the IXO22’s two mic/line combo inputs from the IXO12’s one mic/line combo input and separate Hi-Z input.
Check the exact model’s input diagram for two line-capable channels before planning separate left and right connections.
The input mode matters when connecting a keyboard’s line output. Focusrite instructs Scarlett 2i2 4th Gen users to turn off Inst for line-level devices such as keyboards.
Follow both devices’ manuals for the appropriate input mode, output level and cables.
Left and right keyboard outputs occupy both analogue channels of a two-input interface. That leaves no independent analogue channel for a microphone in the same recording pass.
List the sources you need to record simultaneously. If stereo keys and a vocal must be captured together, choose an interface with enough separate analogue inputs.
Focusrite’s Scarlett 2i2 4th Gen is a documented option for connecting separate keyboard outputs: its user guide illustrates a stereo synthesiser connected with two 6.35 mm TRS cables.
Audient’s EVO 4 offers a stereo-link setting for its two inputs, which Audient describes for stereo line sources such as synthesisers.
Steinberg’s IXO22 is relevant if you want stereo direct monitoring alongside two mic/line combo inputs.
The AudioBox USB 96 is a two-channel option to consider if an input/playback mix control and MIDI connections matter to your setup.
Connect each output to a separate line-capable interface input, then assign the two inputs to a stereo track or record separate left- and right-panned tracks. Use the cable and input settings specified for your keyboard and interface; Focusrite illustrates a two-cable connection for the Scarlett 2i2 4th Gen.
No, not using Focusrite’s documented Scarlett 2i2 4th Gen stereo-keyboard arrangement. Focusrite shows two separate 6.35 mm TRS cables, one into each input. Check another interface’s manual rather than assuming a single input socket accepts a stereo feed.
Not as three independent analogue sources when the keyboard’s left and right outputs already occupy both inputs. If you need to capture a separate microphone in the same pass, choose an interface with another usable analogue input.
Use headphones and check whether the interface can feed live input alongside computer playback. Steinberg describes direct hardware monitoring on the IXO22, while PreSonus describes an input/playback Mix control on the AudioBox USB 96.