I think this amp might kick my butt lol. The main issue is, besides the distortion, it has no low end. Measuring the turns ratio in the OT, it's 50% which suspiciously is what it would be if it was a push pull OT. I'm trying to think about what else could do this but the coupling caps and resistors all seem reasonable and shouldn't be blocking the low frequencies. I'm starting to think these OT are just garbage...
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Would these in the project photo be 22uf 400v Orange Drop cap?