HiFiMAN EF2 USB Headphone Amplifier is Available
Dec 28, 2009 at 4:37 AM Post #16 of 19
Quote:

Originally Posted by mmd8x28 /img/forum/go_quote.gif
I can't imagine a switch mode power supply being good on tubes, let alone output AC current. All switch modes I see output DC. (as laptop power supplies are switch mode).

Good ol fasion transformer like the EF2 comes with is good enough, that is, if the problem with the PSU quality control was fixed. I'm still using my home-made 16v wallwart with a good transformer as my original PSU died in 2 days..



Well ,
No One Is Saying Make a SMPS Mode Supply ,I Am Saying It Should Look Like a Adapter of a Laptop ,Thats More sturdy .Mine Body is Already Cracked .
 

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