Question

I want to hear my amp while recording and don’t want to mic the amp to record.  The amp is a mesa boogie Fillmore 50 with additional speaker outputs.   Plugging my guitar directly into the 68C creates too much latency and I’ve tried everything to eliminate it with no luck.

Answer 1

No.

You don't want to pump that much voltage into a line input circuit.

Get a DI box that has a "speaker" toggle if you want to connect the Speaker output of an amp to a line level input.

Here's a picture:
https://www.amazon.com/Countryman-DT85-Type-Direct-Black/dp/B00BBVXW16/ref=sr_1_5?adgrpid=1343603773905004&hvadid=83975306892045&hvbmt=be&hvdev=c&hvlocphy=111462&hvnetw=o&hvqmt=e&hvtargid=kwd-83975582229780%3Aloc-190&hydadcr=29874_10858167&keywords=countryman+type+85+direct+box&qid=1644683503&sr=8-5