SL88 GrandSL88 StudioSL73 Studio

Sounds issues troubleshoting

## My SL doesn't sound The SL is a pure MIDI controller and doesn't include internal sounds or audio outputs. Connect the SL to a sound generator such as an instrument or an app. If you are trying to connect the SL to a computer or mobile device, please check the [USB connection](/support/articles/1876513/). To get started, try our free virtual instrument [Numa Player](/products/numaplayer/). ## Duplicate notes or outphase sounds Duplicate notes or outphase sounds while recording on DAWs or playing a VST can be caused by **more Zone enabled at once**. To fix it **use one Zone only** by disabling the other Zones: 1. Move the cursor over a Zone and press the Encoder to disable it. 2. Repeat the step 1 until you've disabled all Zones except one. 3. Move the cursor over the Program name, press the IN button and use the **STORE** function to save the changes in current Program.