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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Volume set below -27 db (35 per centage) makes Creative HS-720 absolutely silent"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94061">94061</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Volume set below -27 db (35 per centage) makes Creative HS-720 absolutely silent
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>PulseAudio
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>alsa
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>pulseaudio-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>yanpaso@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>pulseaudio-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>lennart@poettering.net
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Without pulseaudio volume level is detected correctly. (I 've changed default
card in /etc/asound.conf, then ran `speaker-test -c6 -twav` and set volume in
alsamixer to 3 per centages)
With pulseaudio:
1) Headset is loud, even on lowest possible volume level
2) If I set volume below 35 per centages (below -27 db) the output becomes
silent immediately.
3) On some computers, there is possibility to change analog mode to digital
(S/PDIF). With digital mode it becomes calmer: the loudest volume level
produces low volume, it is the same as 35% of analog mode, and the lowest
volume level may be still determined.

Tested with latest versions (ubuntu xenial):
Version 7.1
kernel 4.4

cat /proc/asound/card3/pcm0p/info 
card: 3
device: 0
subdevice: 0
stream: PLAYBACK
id: USB Audio
name: USB Audio
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1</pre>
        </div>
      </p>
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