To answer your question, the answer is NO. The Makua has to sets of outputs, so if you plug your main amplifier into one and the headphone amplifier into the other, you will get no sound to either with the volume set to zero. You need a preamp with a tape or line out (fixed) to plug into your headphone amp, that way you can turn the volume down on the preamp and still feed the headphone amp. Otherwise, if you plug into the outputs, the volume must be turned up to get headphones and then sound would be coming out your speakers as well. So the quick fix to that is to simply power off your main amp, set your volume at a good setting not to overdrive your headphone amplifier. Better yet, just plug the headphone amplifier into your source instead if able.
Output from Mola Mola preamp to Headphone Amp?
I have a Mola Mola Makua preamp and will likely acquire a headphone preamp. I’m wondering if I can use the secondary line out of the Makua to feed the headphone preamp, and simply have the Mola Mola’s volume set to 0 when using the headphone pre?
Would this end up frying the headphone preamp when I am listening to my main system and have the volume cranked up?
If not, will this have any negative effect on sound, not being a true line out without the influence of the volume control in the circuit, even if the gain is set to 0?