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18 changes: 11 additions & 7 deletions _posts/2021-09-09-Inputs.md
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Expand Up @@ -3,15 +3,19 @@ layout: post
title: "Multiple Inputs"
lang: "en"
author: "pcar75"
heading: "Points to note about inputs"
heading: "Connecting multiple sources to Jamulus"
---

## Points to note about inputs
## Connecting multiple sources to Jamulus

If you want to connect many sources (e.g. voice + keyboard + bass), it is important to note that Jamulus currently handles only 2 input channels (either Mono 1 and 2 or Stereo L/R). So the hardware (audio interfaces or mixers) being used must provide a mixed-down 2 channels output to Jamulus.

- Audio Interfaces generally output a mixed signal on their analogue output, but separate signals (1 per source) on their digital output (USB/FireWire/Thunderbolt).

- If you want to connect 2 or more sources (e.g. voice + synth + guitar), it is important to note that Jamulus currently handles only 2 input channels (L/R). So the hardware being used must provide a mixed-down stereo output to Jamulus. Alternatively, run two instances of Jamulus, if your hardware supports it, or use virtual audio inputs to Jamulus for each hardware input.
- Audio interfaces generally output a mixed signal on their analogue output, but separate signals (1 per source) on their digital output (USB/FireWire/Thunderbolt).
- Mixers generally only output mixed-down signals on their analogue output.
- Mixers with USB/FireWire/Thunderbolt generally output a mixed-down signal on their **analogue** output AND separate signals only (no mixed-down signal) on their **digital** output.
- A few Mixers with USB/FireWire/Thunderbolt will either send **only** a mixed-down signal to the **digital** output (small/budget mixers), or else also ADD a stereo mixed-down signal to the separate signals on the digital output.

_(Thanks to [pcar75](https://github.com/pcar75) for this information)_
- Mixers with USB/FireWire/Thunderbolt generally only output a mixed-down signal on their analogue and digital output.

- A few Mixers with USB/FireWire/Thunderbolt (sometimes called "mixerface") can send a stereo mixed-down signal AND/OR separate signals on the digital output.

Alternatively, you could run more instances of Jamulus, if your hardware/software supports it, or use a software mixer with virtual routing between your hardware and Jamulus (examples: Reaper with ReaRoute [Windows], UAD 8's Console).
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