Re: [Alsa-user] USB DAC ( FiiO E7 USB ) seems to be recognized, but no sound

[Jim L. <jc...@au...>]

In article <201...@s7...>, John Magolske
<lis...@b7...> wrote:
> Hi,

> I bought a FiiO E7 USB headphone amplifier after having read that it
> works fine under Linux [1] [2], but I've not had any luck getting sound
> out of it.

Not sure if it will help in your case. But I've now successfully got three
different USB DACs working by putting something like

pcm.!default {
type plug
slave {
pcm "hw:1"
channels 2
format S24_3LE
}
}

into my .asoundrc file in my home directory. It should overrule any other
defaults that are pointing the output elsewhere, etc.

This is for where the USB device is hardware device '1', and in my case
wants the S24_3LE data format. This works for me for various data rates and
both 16 and 24 bits per sample. Test it with the aplay command to play an
lpcm wave file. In your case you may need to omit  the format line or
change the specified data format.

Note that if you have installed something else like pulse audio that may be
hijacking the data and/or has fiddled with the settings of your player
software. So I'd recommend avoiding trying to install other levels of
'control' until you have exhaused the basic alsa methods.

Slainte,

Jim

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