Wrong, Fatparrot, the tubes ARE the sole gain devices for this player. In fact, they impart a controlling influence on the sound of my otherwise colorless reference system.
There are many audiophiles who will spare no expense for whatever is a hot commodity, like pricey tubes. I just settle for glorious music.
There are even more who buy such tubes in hopes of rescuing their aurally "gifted" component chain. A futile move, in my experience.