---
name: "amixer-0.9"
section: "1"
platform: "linux"
package: "alsa-utils"
version: "0.9.0beta12-1"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/amixer-0.9"
---

# amixer-0.9(1)

command-line mixer for ALSA soundcard driver

## NAME

amixer - command-line mixer for ALSA soundcard driver

## SYNOPSIS

**amixer** \[*-c* card\] \[*cmd*\]

## DESCRIPTION

**amixer** allows command-line control of the mixer for the ALSA soundcard driver. **amixer** supports multiple soundcards.

## INVOKING

**amixer** with no arguments will display the current mixer settings for the default soundcard and device. This is a good way to see a list of the simple mixer controls you can use.

## COMMANDS

- *help*

  Shows syntax.

- *info*

  Shows the information about a mixer device.

- *scontrols*

  Shows a complete list of simple mixer controls.

- *scontents*

  Shows a complete list of simple mixer controls with their contents.

- *set* or *sset* \<*SCONTROL*\> \<*PARAMETER*\> ...

  Sets the simple mixer control contents. The parameter can be the volume either as a percentage from 0% to 100% or an exact hardware value. The parameters *capture, nocapture, mute, unmute, toggle* are used to change capture (recording) and muting for the group specified. The parameters *front, rear, center, woofer* are used to specify channels to be changed. When plus(+) or minus(-) letter is appended after volume value, the volume is incremented or decremented from the current value, respectively.

  A simple mixer control must be specified. Only one device can be controlled at a time.

- *get* or *sget* \<*SCONTROL*\>

  Shows the simple mixer control contents.

  A simple mixer control must be specified. Only one device can be controlled at a time.

- *controls*

  Shows a complete list of card controls.

- *contents*

  Shows a complete list of card controls with their contents.

- *cset* \<*CONTROL*\> \<*PARAMETER*\> ...

  Sets the card control contents. The identifier has these components: iface, name, index, device, subdevice, numid. The next argument specifies the value of control.

- *cget* \<*CONTROL*\>

  Shows the card control contents. The identifier has same syntax as for the *cset\]fP command.*

### Options

- *\[-c card\]*

  *Select the card number to control. Cards are numbered from 0 (the default).*

- *-h*

  *Help: show syntax.*

- *-q*

  *Quiet mode. Do not show results of changes.*

### *Example #1:*

**amixer -c 1 sset Line,0 80%,40% unmute capture**

will set the second soundcard's left line input volume to 80% and right line input to 40%, unmute it, and select it as a source for capture (recording).

### Example #2:

**amixer -c 2 cset iface=MIXER,name='Line Playback Volume",index=1 40%**

will set the third soundcard's second line playback volume(s) to 40%

### Example #3:

**amixer -c 2 cset numid=34 40%**

will set the 34th soundcard element to 40%

## BUGS

None known.

## AUTHOR

**amixer** is by Jaroslav Kysela \<perex@suse.cz\>. This document is by Paul Winkler \<zarmzarm@erols.com\> and Jaroslav Kysela \<perex@suse.cz\>.