for more beautiful sound

Now you can brush-up your music player more beautiful and adjustable. 

1. Kernel change

2. Equalizer

1. Kernel can be changed to more strict one. In terminal, type:

sudo apt-cache search linux-image-5.

Many kernels which can be applied to the system. Before we could choose "linux-image-5.13.0.30-lowlatency" that is best one of me, however, it is not available today*.  So please try various kernels to find your favorite one. 

Please copy that in terminal window and type:

sudo apt install "paste" -y

reboot

2. Sound equalizer can be installed at the digital level that does not affect sound quality. 

sudo apt-get install libasound2-plugin-equal

sudo nano /var/lib/mpd/.asoundrc

Then in the empty file appeared on the terminal window, type or copy and paste: 

pcm.!default {

type plug

slave.pcm plugequal;

}

ctl.!default {

type hw card 0

}

ctl.equal {

type equal;

}

pcm.plugequal {

type equal;

slave.pcm "plughw:1,0"; # NOTE this line MUST be your hardware device.

}

pcm.equal {

type plug;

slave.pcm plugequal;

}

Press ctl + x and return for saving the file. After reboot, type:

sudo -H -u mpd alsamixer -D equal

Now you can control/manipulate your sound more suitable for your audio systems as DAC, amplifier and speakers. This sound equalizer is very powerful that can control right/left sound independently.  See the help/F1. 

Please enjoy the most beautiful sound ever!!!