Reloaded, next generation! The original iTube became the 'go to' tube buffer for any and every home audio system. The iTube2, with trickle-down from the flagship 'Pro' series, has been redesigned with new parts and new circuitry. Only the GE5670 tube remains. The iTube2 is a tubed output stage; tube preamp; tube buffer and an impedance-matching device. There is nothing like it. Put the iTube2 before a solid-state preamp with another iTube2 after it, creating the effect of tubing the whole audio chain. Or simply use the iTube2 as a very high-quality preamp by itself. The iTube2 sounds by and far like a tube amplifier 'done right with the inimitable magic of tubes'. Tube+ circuit for SET/Push-Pull/Classic tube amplifier signature2. 3D Holographic+ for Loudspeakers matrix system3. XBass+ for Loudspeakers matrix system.