Scott,

I checked the schematic for the headphone board on the T1 and it's definitely stereo--not mono. Same holds true for the entire PSR series and T2 as well.

Gary

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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)