Technics remote IR

I've got an IR Blaster that I've needed to train with the controls for my old-school technics amplifier. I need to write them down somewhere:

Mute:
DQYN2QZ8AeUBfAE4BXwBQAfgEwMDaAJ8AcAf4BcvwB/AB8A34A8H4AMnQAtAA+ADK+ADD+AHCwMMsAYN4CPH4A1XQAHgBRtAD8BrwAdAE+ATA+ADJ0ALQAPgAy/gAw/gBAsCBXwB

Volume Up:
BSENywayAUABA/UEsgHgIwHgFy/AH8AH4B8BAuwBsmABQDfAC+ATAUAnAQm94GnH4BubQAFAn+AZAQXsAfUEsgE=

Volume Down:
Bk8Npwb8AbIgAQMGBbIB4CMB4BcvwB/AB+ATAeALI+ADE+ADC+AHAUAbAXG2QMcBsgFAAQAG4KLHgXkJsgGyAbIBBgWyAQ==