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It states it needs 12VAC-0-12VAC , 3 pin supply.
Did u forget the link?
I saw this article before. It describes opamps that are overloaded because they are driving 33 ohm headphones. Most opamps are spec'd with a 2k minimum load resistance.Thx Nigel, perhaps you can consider adding this link to the sticky...it discusses and rates all different kinds of opamps for audio purposes..... It rates the TL071 quite poorly.
https://tangentsoft.net/audio/opamps.html