This section covers some common use cases for the Solo 4th Gen. Often your use case is a variant of these and how you use your Solo 4th Gen probably reuses some principles.
The following diagrams show how to connect a range of inputs and outputs to the Scarlett Solo. To connect external processors, synthesisers or keyboards see Connecting a Line-Level Device.
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Connect instruments such as guitars, bass, electro-acoustic guitars and other instruments with pickups to Input 1 the 6.35mm jack input on the front panel. When you connect an instrument use a 6.35mm to 6.35mm TS mono jack cable and set the input to 'instrument' using the Inst button.
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Connect your headphones (e.g. the Scarlett SH-450 headphones) via a 6.35mm jack to the headphone output. You must use a 6.35mm TRS jack connector to connect your headphones. If your headphone jack connector is smaller you need a headphone jack adaptor.
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Connect the Scarlett to your computer using a USB cable.
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Connect monitor speakers (aka Monitors) to Outputs R and L (right and left). Use 6.35mm balanced TRS jack cables to connect monitors. If your monitors have different connections please see the monitor's user guide.
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Connect a microphone (e.g. the CM25 MkIII) to Input 2 using an XLR to XLR cable. You must connect a microphone via an XLR cable, other microphones may not work, or you may have problems.
The following diagram shows how to connect a line-level device to the line input on the Solo.
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Connect line-level devices such as synthesisers, keyboards or mic preamps to input 1 using a 6.35mm jack input on the front panel. When you connect a line-level device use a 6.35mm to 6.35mm TRS jack cable but note the input is mono. Turn off Inst when you connect line-level devices to the Scarlett Solo.
The Scarlett has a standalone mode; this mode allows your interface to pass audio when it's not connected to a computer. This can be useful for:
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Increasing the number of preamps on another interface or mixer that only has line-level inputs left.
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To use your studio setup without having your computer turned on or plugged in, for example, to use your guitar through your speakers, or any electronic music equipment connected.
To setup Standalone mode:
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Connect your Scarlett's power socket to mains power.
This can be a USB wall plug, similar to what you may use to charge your phone.
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Connect your inputs and outputs to your interface as usual (see Using your Scarlett Solo 4th Gen).
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Turn on Direct Monitor to make sure the input signals are being sent to the outputs (headphones and line).