Yamaha SessionCake SC-02 Mixing Headphone AmplifierYamaha SessionCake SC 02 Mixing Headphone Amplifier SessionCake SC 02 adds vocalists, keyboardists, and digital instruments to the mix with XLR and stereo left (mono) and right (Hi Z) inputs, as well as a GAIN (MIC) control for dynamic microphones. SesssionCake is the affordable, ultra portable, and flexible solution for aspiring musicians who dont have the time, the money, or an appropriate space to really cut loose when they practice alone or jam