Knowledge Base


Can I plug into the ¼” TRS input and use the Ceres as a practice amp for my guitar?

Not directly. If you do, the signal from your guitar won’t be loud enough to be heard and it won’t sound its best because the Ceres inputs require a much “hotter” signal than most guitars produce. To use a guitar with the Ceres speaker, you will need to plug your guitar into a DI (Direct Injection, or “direct”) box, then plug the output of the DI box into the Ceres TRS input.

PreSonus makes the TubePre V2, a high-quality preamp that also serves as a DI box. More information can be found at

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