Each output of the SubSix requires a Hi-Z / instrument-level input. While many interfaces have one or two of these, very few provide six or more. Some interfaces that do are:

Tascam Model 12

MOTU 8Pre-ES

Behringer UMC1820

You might be tempted to use line inputs, but please note:

High frequencies will be noticeably reduced

Dynamics may not feel natural

Additional gain will be required, which often increases noise and cross-talk

While the signal may still be usable, we do not recommend relying on line inputs for the SubSix.

If your interface doesn’t have enough Hi-Z inputs, the solution is to add active DI boxes:

Radial J48 or BSS – excellent professional options

Behringer DI800 – affordable and perfectly usable for multi-channel setups

Orchid Micro DIs – exceptional quality in a very compact format.

This ensures that each string’s output is captured cleanly, with the correct tone, dynamics, and minimal noise.