Question: which Raspberry Pi 4 is optimal?

[TheOldPresbyope]

Yay, another Khadas Tone 1 Board user. I was beginning to think I was the only one. Remarkable performance for the cost. Mind you, I don't use its DSD capability except to test other functionality or user problems. If I did, I'd prefer a DAC which supported hardware volume control with DSD material.

Regards,
Kent