View source for X350

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[[File:IMG-4688.jpg|thumb|right|Raspberry Pi X350 USB Audio Board Front]]
[[File:IMG-4689.jpg|thumb|right|Raspberry Pi X350 USB Audio Board Back]]
[[File:IMG-4696-4PIN.jpg|thumb|right|Raspberry Pi X350 USB Audio Board]]
[[File:IMG-4697.jpg|thumb|right|Raspberry Pi X350 USB Audio Board Accessories]]

==Overview==
The Raspberry Pi has an on-board audio jack, which is super handy for all kinds of sound effects and speech, just plug and go! However, for when you want better audio for music playback,This X350 USB audio card can greatly improve the sound quality and volume.

You can  DIY a external speaker using the 4pin speaker cable (you can found cable in the package  box), and control the speaker via the on-board button.

In additonal, you can use it on the desktop computer, you only use one USB cable to connect the desktop computer and X350, and insert earphone into the X350, then you can enjoy the high quality sound.

[[File:IMG-4693.jpg|600px]]

==Features==
* Ideal USB audio solution for Raspberry Pi
* 48K/44.1KHz Sampling Rate for both Playback and Recording
* <span style="color:red;">On-board high-sensitivity Electret Condenser Microphones</span>
* <span style="color:red;">Supports 16 bit ADC input with Microphone Boost</span>
* High Performance 16 bit audio DAC with Earphone Phone Buffer
* On-board 3.5mm headphone jack and microphone input jack 
* On-board buttons for speaker volume control and microphone mute
* On-board LED Indicators for Record Mute Status, Playback and power
* Compatible with Raspbian without Additional Driver

* On-board stereo Class-D audio amplifier with high SNR 
* 2x3W Output at 10% THD with a 4Ω Load 
* 2.4W Output at 1% THD with a 4Ω Load 
* 32-Step Up/Down Volume Control from -80dB to 24dB 
* Superior Low Noise 60uV and Minimize Pop/Clip Noise 
* On-board XH2.54 connector for speaker output, power input and speaker mute GPIO control 
* USB bus-powered - does not require external power supply
*PCB Size 56mm x 56mm
[[File:X350 audio player schematic diagram.jpg]]

==Power Supply Requirement==
* Power supply: 5Vdc +/-5% , Powered by Raspberry Pi
* Speaker output power : Max 2x3W Output at 10% THD with a 4Ω Load                 
* Headphone output voltage : 1.25Vrms

Ports & Connectors: 
* USB socket - USB 2.0 type A, 3.5mm audio jack x2
* Power input connector - XH2.54 3-pin  x1
* Speaker output connector - XH2.54 4-pin  x1

==Packing List==
* 1 x X350 Board
* 1 x 4PIN speaker cable (about 30cm length)1
* 1 x usb connector
* 1 x install screw pack

==User Manual==
X350 use CM119A chip from c-media;

https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi?view=all

==FAQ==
1.Is it possible to use both the onboard microphone and an external microphone at the same time (2 audio input channels at the same time)?

Answer: Sorry, it is not possible to use both the onboard microphone and an external microphone at the same time, but if you need to use two microphone, you can consider to use two X350 audio board to stack on and under your raspberry pi to use it.(actually we do not test it, you need to test it yourself, thank you!)

2.How to setup and use X350 board?

Answer: Please refer to [http://www.suptronics.com/Xseries/x300.html#MICROPHONE_INPUT_AND_AUDIO_OUTPUT here] and try it on Raspbian.

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[[Category:Product Manual]]
[[Category:Raspberry pi]]