[LAU] EPH-O2 w/alsa - volume too low

Hi,

I've recently purchased an Epiphany Acoustic O2 sound card, basically
it's an USB DAC with a headphone amp. Problem is, the sound is barely
audible. I've tested the amp independently (using the line in) and it
works fine. So now I am trying to set up a preamp in alsa, but somehow
I can't get it working. The config is below. I'd be grateful for any
hints or ideas. Thanks,

rad0

------- asoundrc ---------------------
# External USB DAC
pcm.DAC {
        type hw
        card DAC
}
ctl.DAC {
        type hw
        card DAC
}

# Preamp on external DAC
pcm.DAC {
      type plug
      slave.pcm "softvol"
  }

pcm.softvol {
    type softvol
    slave {
        pcm "dmix"
    }
    control {
        name "preamp"
        card DAC
    }
    min_dB -5.0
    max_dB 20.0
    resolution 6
}
------- asoundrc ---------------------

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Received on Fri Jun 20 08:15:02 2014