This is typical studio equipment. So you will hear the music as intended by the mastering engineer. Some mastering engineers (like Doug Sax) use tubes so the sound of vocals is already sweetened and the drums may have more weight/punch from the added compression.
However, if you like to sweeten things even more with your own tubes then you may find the sound to be thinner, more neutral and with less warmth than what you are used to.
However, if you like to sweeten things even more with your own tubes then you may find the sound to be thinner, more neutral and with less warmth than what you are used to.