Hey @Rob Watts, maybe you can comment on the useable voltages for the Qutest for testing with common batteries, say, D-size? I feel unsafe to try it with a 5V power-bank because most modern ones are able to convert to 9V fast charging and I wouldn't like that to happen to my precious Qutest (I don't know if it can happen)! I like the sound with the stock p.s. very much, though.Does any one know if the Qutest can work safely with a voltage of 6+ Volts? I wonder if I could try 4x1,5 volt D-size batteries to listen initially for improvements over the stock supply. Then I could spend for a proper battery suplly.
Have a nice weekend!
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