Or just use a standard overdrive plugin, something like that. The guitar pedal needs a signal to process, so youâd have to plug an instrument or audio source directly into the pedal to do this, so unless you route your computer output to the pedal, then back to the speakers, it wonât work the way you are describing, and even if you do this it wonât be worth the hassle IMO. Plugins are the way to go
If you have a sound interface with extra audio inputs and outputs, you can certainly route audio through external effects and back into the DAW, but unless youâre running all audio on dedicated DSPs (Pro Tools HD or similar), latency is going to add up to somewhere between bad and terrible, so it might not be viable for âliveâ playing.
However, running audio through external analog gear in the mix and mastering stages is a tried and tested approach, used by many engineers. At that point, latency is pretty much irrelevant, so all you really need is any audio interface with 4+ audio outs, so you can monitor the results while running external effects.
You can do that, of course, and it has the advantage of not adding multiple passes through the DAW to the total latency (it essentially becomes an extra effect pedal in the chain), but youâll need extra outputs (and maybe an analog mixer) to hear the rest of the arrangement, and extra inputs if you want to record the externally processed audio.
One of those might be a good idea to use, indeed! Analog gear, and even analog I/O on sound interfaces and the like, can do weird things if loaded with the wrong impedance, and this device should avoid that, as well as ground loops and some other issues.