Introduction of R38h Raspberry Pi Audio Decoder Board
1. Professional 1IS digital processing solution, support PCN768KHz/DSD512 original code hard decoding, full frequency
Rate music automatically switches.
2. No need to set output resampling, just turn off by default. The real original code is lossless and hard to decode.
3. Use a piece of ES9038Q2M fever decoder chip.
4. The Raspberry Pi can play music through the 11S mode, and the listening experience is smooth, real and natural, and never used
The feeling of pause that is difficult to detect when playing in USB mode
5. Use the standard version of VOLUMIO, MoodeAudio
VOLUMI0 official version can support 44.1-384KHZ DSD64-DSD128 original code hard decoding
MoodeAudio official version can support 44.1-384KHZ DSD64-DSD128 original code hard decoding
6. Standard LPF circuit, the op amp uses 3 low-distortion, low-noise OPA1612 op amps, the whole board
The analog output distortion is as low as 0.0005%.
7. The analog part of the dual voltage, plus or minus 15 volts power supply, effectively play the potential of the operational amplifier, not low voltage or
The single power supply scheme is comparable.
8. Provide optional 0LED display kit and remote control kit, which is convenient for users to purchase according to their own needs.
R38h Raspberry Pi audio decoder board parameters:
Decoding specifications:.
PCM 44. 1KHz-768KHz/32Bit
DSD DSD64/128/256/512 (hard solution)
Two-channel RCA output: 2. 2Vrms/-0dB THD+N: 0. 005401KHz
3.5 Headphone holder: 2. 2Vrms/- 0dB THD+N: 0.00501KHz
(The headphone holder and RCA holder are both connected to the LPF output. The 3.5 headphone holder is connected to most headphones.
Sound can be heard, but because the decoder board itself does not have an amp loop, if the buyer connects the headset to use,
And need to get a better driving effect, please be equipped with a suitable headphone amplifier)
Parameter test description:
Raspberry Pi 4B (version 1.2) install the optimized version of MoodeAudio640,
The output setting is: Audiophonics ES9028/9038 DAC, measured by uncovering the music file of the U disk,
705. 6KHz and 768KHz do not have music files with these two sampling frequencies, they are through HQPlayer
After the frequency is turned on, the R38h decoder board is pushed to the tree back for testing, and the R38h decoder board will be poor under different software environment conditions
Don’t, for example: MoodeAudio7. 30 can support PCM384KHz/DSD128
powered by:
The 5V power supply of the board is directly connected to the 40P interface of the Raspberry Pi. There are two ways to supply power as follows:
a. Directly use micro_usb to power the Raspberry Pi, and the Raspberry Pi&x27;s 40P interface provides power to the board
b. Power is supplied from the DC socket input interface of the board, and the board supplies power to the Raspberry Pi through the 40P interface
** Only one of the two power supply methods can be used at the same time, and the two cannot be used at the same time
Otherwise, the board, Raspberry Pi or power supply will be damaged.
The board power interface input specifications are as follows:
Power supply voltage: DC stabilized voltage +5V, voltage range: ±5%
Power interface specification: 5.5/2.1, positive inside and negative outside
Suggested power supply current: ≥2000MA
Single board working current: <350MA (excluding Raspberry Pi motherboard)
Shell kit installation instructions link: https://pan.baidu.com/s/1uMPo0mMZ3ez_ mi-hSi-Wg Extraction code: 5lab
Introduction to MoodeAudio
MoodeAudio is a free audiophile music player software that runs on the Raspberry Pi, the official version
MoodeAudio has the following functions:
1. Support high sampling playback 384KHz/32Bit, support DSD64/DSD128 original code output
2. Support Qplay Airplay and Bluetooth
3. Support NAS, support DLNA/UPNP push
4. After the mobile phone installs BubbleUPnP or QQ music and other regular apps, you can push the music directly
To Raspberry Pi
5. Support local playback without the computer, through the Raspberry Pi USB port to plug in the mobile hard disk, U disk to play
Inner song
......
Optimized version of MoodeAudio640
The optimized version of MoodeAudio640 is a real-time kernel. Compared with the official version of MoodeAudio,
Support higher specifications and more functions, such as:
1. Support DSD256, DSD512 original code output
2. Support ROON bridge
3. Support SACD ISO
Optimized version of MoodeAudio640, only suitable for Raspberry Pi 4B (version 1.2)
Raspberry Pi 3B+ and Raspberry Pi 3B versions are currently on the market
Most of the Raspberry Pi 4B (version 1.4) or above versions in circulation cannot be used..
MoodeAudio settings
The setting method uses a mobile phone connection, taking MoodeAudio7.01 as an example, other versions may
There is a difference. The VOLUMI0 setting method is similar, so I won’t repeat it. Please Baidu for basic operations such as swiping the memory card and setting up the network. Thank you