preenfm Forum

PreenFM => preenfm2 and preenfm3 => Topic started by: Portray on June 05, 2023, 02:34:59 PM

Title: Power my Preenfm2 with a mobile charger?
Post by: Portray on June 05, 2023, 02:34:59 PM

Hi
I wonder if I can power my Preenfm2 with a mobile charger that outputs 5V & 1A via the USB port?

Best regards, Portray

Title: Re: Power my Preenfm2 with a mobile charger?
Post by: Xavier on June 06, 2023, 09:44:57 AM

Yes you can.
It will be more noisy than using a power supply because the 5v of the charger directly feed the DAC. But it depends on the mobile charger.
With a 9v power suply there is a stage to lower the voltage that clean up the 5v.

Title: Re: Power my Preenfm2 with a mobile charger?
Post by: Portray on June 08, 2023, 06:22:10 PM

Okay, thanks for your answer! I took a leap of faith and tried it and it works perfectly. Thanks for the tip with the noise. I will listen if I hear some noise in the signal when I use it next time.

Title: Re: Power my Preenfm2 with a mobile charger?
Post by: jdlesemajeste on June 18, 2023, 03:57:45 PM

I power my PFM3 both ways, depending on the situation and I actually haven't noticed any sound difference but I have a famously tin ear. I think it will also depend on the charger/USB power situation.