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	<id>https://wiki.geekworm.com/index.php?action=history&amp;feed=atom&amp;title=X400</id>
	<title>X400 - Revision history</title>
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	<updated>2026-06-17T04:34:28Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.8</generator>
	<entry>
		<id>https://wiki.geekworm.com/index.php?title=X400&amp;diff=36876&amp;oldid=prev</id>
		<title>Admin: Replace &lt;comments/&gt; with &lt;comment-streams /&gt;</title>
		<link rel="alternate" type="text/html" href="https://wiki.geekworm.com/index.php?title=X400&amp;diff=36876&amp;oldid=prev"/>
		<updated>2026-05-27T02:13:44Z</updated>

		<summary type="html">&lt;p&gt;Replace &amp;lt;comments/&amp;gt; with &amp;lt;comment-streams /&amp;gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 10:13, 27 May 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l100&quot;&gt;Line 100:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 100:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The X400 v3.0 board use the latching switch, the latching switch shut down both the Pi and DAC.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The X400 v3.0 board use the latching switch, the latching switch shut down both the Pi and DAC.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;comment-streams /&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;comment-streams &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;id=&quot;main&quot; &lt;/ins&gt;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Product Manual]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Product Manual]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Raspberry pi]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Raspberry pi]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key wiki_2026:diff:1.41:old-36268:rev-36876:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>Admin</name></author>
	</entry>
	<entry>
		<id>https://wiki.geekworm.com/index.php?title=X400&amp;diff=36268&amp;oldid=prev</id>
		<title>Admin: Replace &lt;comments/&gt; with &lt;comment-streams /&gt;</title>
		<link rel="alternate" type="text/html" href="https://wiki.geekworm.com/index.php?title=X400&amp;diff=36268&amp;oldid=prev"/>
		<updated>2026-05-26T12:07:52Z</updated>

		<summary type="html">&lt;p&gt;Replace &amp;lt;comments/&amp;gt; with &amp;lt;comment-streams /&amp;gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 20:07, 26 May 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l100&quot;&gt;Line 100:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 100:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The X400 v3.0 board use the latching switch, the latching switch shut down both the Pi and DAC.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The X400 v3.0 board use the latching switch, the latching switch shut down both the Pi and DAC.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;comments &lt;/del&gt;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;comment-streams &lt;/ins&gt;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Product Manual]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Product Manual]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Raspberry pi]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Raspberry pi]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key wiki_2026:diff:1.41:old-29648:rev-36268:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>Admin</name></author>
	</entry>
	<entry>
		<id>https://wiki.geekworm.com/index.php?title=X400&amp;diff=29648&amp;oldid=prev</id>
		<title>Admin: Add {{Deprecated}} template</title>
		<link rel="alternate" type="text/html" href="https://wiki.geekworm.com/index.php?title=X400&amp;diff=29648&amp;oldid=prev"/>
		<updated>2026-04-30T03:24:04Z</updated>

		<summary type="html">&lt;p&gt;Add {{Deprecated}} template&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 11:24, 30 April 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{Deprecated}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:IMG-3630-01.jpg|thumb|right|raspberry pi hifi audio board x400]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:IMG-3630-01.jpg|thumb|right|raspberry pi hifi audio board x400]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:IMG-1241-05.jpg|thumb|right|raspberry pi hifi audio board x400]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:IMG-1241-05.jpg|thumb|right|raspberry pi hifi audio board x400]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key wiki_2026:diff:1.41:old-8995:rev-29648:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>Admin</name></author>
	</entry>
	<entry>
		<id>https://wiki.geekworm.com/index.php?title=X400&amp;diff=8995&amp;oldid=prev</id>
		<title>Admin: /* FAQ */</title>
		<link rel="alternate" type="text/html" href="https://wiki.geekworm.com/index.php?title=X400&amp;diff=8995&amp;oldid=prev"/>
		<updated>2020-03-09T06:41:25Z</updated>

		<summary type="html">&lt;p&gt;&lt;span class=&quot;autocomment&quot;&gt;FAQ&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[File:IMG-3630-01.jpg|thumb|right|raspberry pi hifi audio board x400]]&lt;br /&gt;
[[File:IMG-1241-05.jpg|thumb|right|raspberry pi hifi audio board x400]]&lt;br /&gt;
&lt;br /&gt;
==Overview==&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;&amp;lt;span style=&amp;quot;color:red;&amp;quot;&amp;gt;This product is be sold out, now the new version v3.0 is released, please refer to [[X400 V3.0]].&amp;lt;/span&amp;gt;&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
&lt;br /&gt;
[[File:X400-V30-IMG-5176.jpg|700px|New X400 V3.0 DAC+AMP Expansion Boardt]]&lt;br /&gt;
&lt;br /&gt;
This is the raspberry pi hifi audio expansion board, and it use TI PCM5122 chip, can bring you high quality music enjoyment.&lt;br /&gt;
&lt;br /&gt;
[[File:IMG-3635-AM.jpg|raspberry pi hifi audio board x400|700px]]&lt;br /&gt;
&lt;br /&gt;
==Match Power Supply==&lt;br /&gt;
Please refer to [[DC 19V 2A Power Supply]]&lt;br /&gt;
&lt;br /&gt;
==KEY FEATURES==&lt;br /&gt;
Input Voltage:&lt;br /&gt;
*6V to 24Vdc converted to 5V, 3A via step-down DC/DC converter to power the Raspberry Pi &lt;br /&gt;
Audio:&lt;br /&gt;
*Full-HD audio – up to 24-bit/192kHz playback&lt;br /&gt;
*Class leading audio; 112db SNR, and THD of 0.0019%&lt;br /&gt;
*Audiophile TI Burr Brown 32-bit/384kHz DAC (TI PCM5122)&lt;br /&gt;
*Uses the digital I2S audio signals to reduce CPU load over USB audio solutions&lt;br /&gt;
*Integrated hardware volume control&lt;br /&gt;
*Mute can be enabled / disabled via jumper&lt;br /&gt;
*Built in High quality audio headphone amplifier (TI TPA6133A)&lt;br /&gt;
*Earphone AMP can be enabled / disabled via jumper&lt;br /&gt;
*Built in High quality Class-D stereo audio amplifier (TI TPA3118D2)&lt;br /&gt;
*Up to 2 x 20W into 4 ohm&lt;br /&gt;
*AMP can be enabled / disabled via jumper&lt;br /&gt;
*Phono/RCA connectors &lt;br /&gt;
*3.5mm stereo audio jack&lt;br /&gt;
*Speaker terminals&lt;br /&gt;
Wireless:&lt;br /&gt;
*Built in IR sensor (38KHz)&lt;br /&gt;
Misc:&lt;br /&gt;
*Power output socket&lt;br /&gt;
*DIP switch to remove connection from RPi’s pin header&lt;br /&gt;
*Directly connected on top of the Raspberry Pi using the board GPIO header pins &lt;br /&gt;
*No wiring nor soldering is required &lt;br /&gt;
*Duplicated the 40-pin header of the R-Pi in order to support existing expansion boards &lt;br /&gt;
*Suitable for Raspberry Pi Model B+ and Raspberry Pi 2 Model B NEW!&lt;br /&gt;
&lt;br /&gt;
==User Manual==&lt;br /&gt;
* [http://www.suptronics.com/Xseries/x400.html Official website]&lt;br /&gt;
* [[File:IQaudIO.pdf]]&lt;br /&gt;
&lt;br /&gt;
===For Volumio (On volumio 2.444) ===&lt;br /&gt;
[[File:X400-VOLUMIO-1.jpg|How to use X400 on Volumio|700px]]&lt;br /&gt;
&lt;br /&gt;
[[File:X400-VOLUMIO-2.jpg|How to use X400 on Volumio|700px]]&lt;br /&gt;
&lt;br /&gt;
Save &amp;amp; reboot&lt;br /&gt;
&lt;br /&gt;
Now you can enjoy your music;&lt;br /&gt;
===Configuring Raspbian to include sound card support===&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
#Update Raspbian on the SD card to be the latest available.&lt;br /&gt;
pi@raspberrypi ~ $ sudo nano /boot/config.txt&lt;br /&gt;
#add the following comments&lt;br /&gt;
dtoverlay=iqaudio-dacplus&lt;br /&gt;
&lt;br /&gt;
#To remove the standard Raspberry PI audio card, comment out the {dtparam=audio=on} device tree parameter in your /boot/config.txt and reboot.&lt;br /&gt;
pi@raspberrypi ~ $ sudo nano /boot/config.txt&lt;br /&gt;
# Enable audio (loads snd_bcm2835)&lt;br /&gt;
#dtparam=audio=on&lt;br /&gt;
&lt;br /&gt;
#Flush your filesystem changes and reboot the Raspberry Pi&lt;br /&gt;
pi@raspberrypi ~ $ sync&lt;br /&gt;
pi@raspberrypi ~ $ sudo reboot&lt;br /&gt;
&lt;br /&gt;
#Once restarted SSH into the Pi and check that the audio drivers / card is available to ALSA.&lt;br /&gt;
pi@raspberrypi ~ $ aplay -l&lt;br /&gt;
&lt;br /&gt;
#If the IQaudIO board and drivers have been installed correctly you should see something similar to:&lt;br /&gt;
pi@iqaudio ~ $ aplay -l&lt;br /&gt;
&lt;br /&gt;
**** List of PLAYBACK Hardware Devices ****&lt;br /&gt;
card 0: IQaudIODAC [IQaudIODAC], device 0: IQaudIO DAC HiFi pcm512x-hifi-0 []&lt;br /&gt;
Subdevices: 0/1&lt;br /&gt;
Subdevice #0: subdevice #0&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
More detail refer to Page 31 of [[File:IQaudIO.pdf]]&lt;br /&gt;
&lt;br /&gt;
==FAQ==&lt;br /&gt;
1.Can you use the RCA&amp;#039;s as inputs?&lt;br /&gt;
&lt;br /&gt;
Yes, you can try to use the RCA as input in theory. but pls put the DAC (PCM5122) in &amp;quot;mute&amp;quot; mode. (But we do not suggest you use the RCA as input, if so, the DAC will be no output.)&lt;br /&gt;
&lt;br /&gt;
[[File:X400 board design.jpg|700px]]&lt;br /&gt;
&lt;br /&gt;
2.Does this X400 V3.0 have analog input?&lt;br /&gt;
&lt;br /&gt;
No, when you use X400 v3.0 with Raspberry Pi , there is no analog input, but if you do not use Raspberry Pi, the RCA port can be used as analog input.&lt;br /&gt;
&lt;br /&gt;
3.If you connect a power switch to the board&amp;#039;s connector should it be a momentary or latching switch? also, does it shut down the pi or just the dac?&lt;br /&gt;
&lt;br /&gt;
The X400 v3.0 board use the latching switch, the latching switch shut down both the Pi and DAC.&lt;br /&gt;
&lt;br /&gt;
&amp;lt;comments /&amp;gt;&lt;br /&gt;
&lt;br /&gt;
[[Category:Product Manual]]&lt;br /&gt;
[[Category:Raspberry pi]]&lt;/div&gt;</summary>
		<author><name>Admin</name></author>
	</entry>
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