Below are some tests I've made of the PIMETA v0.012 vs. a META42 v2.5. The latter is a v2.2 board modified to accept BUF634 chips. The two amps were configured as closely as possible:
Grado SR-60 Load — The amps driving these 32-ohm headphones.
Sennheiser HD-580 Load — The amps driving thers 300-ohm headphoness.
No Load — The amps with no load, simply passing the signal through.
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