NB! It seems this console command is not compatible with CS2.
Command Profile

SND_DZMUSIC_VOLUME

CS:GO

This console command adjusts the volume of the music played when you win a game of Danger Zone (the Battle Royale mode).

Syntax
snd_dzmusic_volume [Volume]

Description

This console command adjusts the volume of the music played when you win a game of Danger Zone (the Battle Royale mode).

How To Use snd_dzmusic_volume

  1. Enable the developer console in Counter-Strike settings.
  2. Open the console with the tilde key (~).
  3. Enter snd_dzmusic_volume [Volume], replacing bracketed arguments with the value you want, then press Enter.

This legacy command is not currently listed as compatible with Counter-Strike 2.

Syntax And Arguments

snd_dzmusic_volume [Volume]
Volume The volume you want Danger Zone victory music to play at. The default value for this command is 0.2. Use a larger number to increase the volume, and a smaller number to decrease volume.