@audiotomb Hi, the Orchid will accept 24/192 kHz. Maybe your settings in your Oppo are incorrect. If you play SACDs/DSD files they should get converted to DOP or PCM (Various sample rates). Blu-Ray and DVD Audio should work fine.
MQA has been discredited by many and proven to be lossy. Nevertheless lots of people still like it. Personally I think it's unnatural.
You have an Aurender A10 why not use it's DAC? This can give you MQA and Native DSD.