keithpgdrb said: Question. Comments continue to come In on the greater distortion with the single sided magnet. What other orthos are out there with single sided configuration showing this distortion? Click to expand...

It's more of a theoretical conjecture that single-ended design won't have the uniform and simultaneous push/pull motion for the diaphragm as dual-ended designs, instead the diaphragm is only being pushed or pulled at any given moment. And that in theory means less control for the diaphragm and thus more distortion etc.The only single-ended orthos available to the public currently are Hifiman's HE4, and JPS's Abyss. Both show some THD disturbances but that cannot be correlated to their single-ended design since their magnet structures as well as tracing layouts are distinctive relative to dual-ended planars available.