Possible to use with a sub-woofer?

Yes. Sub-woofer with high gain connected to the speakers.

We always recommend that a sub-woofer is connected in “high pass” mode that is, where it is connected to the speakers or at the outputs of the amplifier.

Depending upon the sub-woofer, this usually requires a cable that is co-axial at one end (to the sub-woofer) and spade at the other end (which is connected to the speaker outputs at the amplifier or speaker).

This is a good description:

https://www.cnet.com/how-to/how-to-hook-up-a-subwoofer-to-a-stereo-system/

Did this article solve your problem?

If you’re still having problems, why not contact the iFi Support Centre. We’re available Monday to Friday.