@dcgold, I just got to my season home where my Threshold FET 10 H/L preamplifer is located. It is currently connected to a Pass Labs XA-25. I confirmed that when mono mode is selected the balance control does provide for panning right-to-left and left-to-right. Let me know if you have additional questions.
Thank you so much. I ended up with an Audio Research preamp & made an external box to switch mono & send the signal right or left. I connect with A/B ing driver or crossover changes.
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I didn’t know you have one of these. It’s a great preamp.
Dead quiet and drives the XA-25 with aplomb. I’ve had this for eons! Put it on the market recently as well as a Coda 02b preamp.
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