Fender Tonemaster FR-12 Input Requirement?

[DdC441]

A quick question the answer for which I'm having a surprising amount of difficultly tracking down....

The Fender Tonemaster FR-12's input is expecting a Line level input signal, correct? If I want to plug in a Strat or an acoustic with a battery powered preamp output built in, I first need to run them through a modeler or some other piece of equipment to bump the signal from Instrument level in Line level first. Do I have that correct?

Any insight would be appreciated. Thanks!

[Offshore Angler]

You should be able to plug them directly into the input jack, but an acoustic really isn't designed to be plugged into that style of amplifier. The Tonemaster is a modeler built into a cabinet with a power amp and a speaker.