Grandmother 3x outputs, phase info?

does anyone know if the 3 outputs on the GM are all in phase with one another?

headphone
euro
reverb

I am getting some phase related funkiness in some recordings, but am also using a Fulltone TTE in stereo mode, troubleshooting

fwiw am using the ( mono 1/4" cable) headphone out into the TTE, in stereo mode for LR echo effect

then GM euro and reverb as DI mono

for a total of 4 tracks from GM source, which are being mixed in the DAW

thx!

FYI I find it’s quite useful to record the reverb out, and headphone out separately, as 2 tracks

I have the headphone out set to dry ( reverb at 0 ) and then can mix the amount of reverb later on, in the DAW