@Bob I just ordered my second re-conditioned A9 from eBay. I passed the first one along to my son’s father-in-law who is suffering from Parkinson’s disease.
Only now did it occur to me to wonder what he settings on these re-conditioned units are. I understand that current A9’s have the Omni 8 setting built in. Previous units had a different program. Did the original version only have a single frequency?
But back to my question. To what new units are the reconditioned A9 units equivalent.
Thanks.