The A70pro seems like a very good HPA/preamp. However, I desperately searched for a reason to buy it, but there is already no place to install it. Hmm, toilet?I don't know. Probably 9+ Vrms.
The only person I know who tests max input voltage is @nagster
I returned my A90D - much happier with my SMSL SP400 (47k ohm input impedance, also with stepped resistor relay volume control, and the best THX amp modulates AAA-888) No firmware issues. Any more info, happier.. why? ;)www.audiosciencereview.comIs anyone aware of the error codes that might come up on the L70? Mine came up with the code ‘r3’ when prompted to turn on via the 12V trigger, and then was unresponsive. I turned it off for a few seconds and then on again, and it’s now sweetly playing loud & clear again…www.audiosciencereview.com
There is no surplus if it is a replacement, but there is no necessity to replace it. . .
I have attached part of the empty box.