Custom Audio Upgrades is a small Greek company, manufacturing handmade cables and cirquits. With great love and respect for the music and great interest in meeting needs of music lovers listeners.

The range of Sweet Note handmade cables is the result of a long study and persistent experimentation, with a scope to deliver the very substance of music that is found in every recording.

We believe that you will appreciate the ability of our products, to allow to the music to emerge through your audio devices, without sounding just differently.