The CV5 is a “Vacuum Tube / Solid State Hybrid” amplifier. It delivers the low output impedance, tight bass control and sonic detail you expect from amplifier (Rx) with the added spatial qualities and sonic lushness you’d expect from a vacuum tube based amplifier (CDM).
The 6111 vacuum tube is placed at the input stage of the CV5 running in Class A. Since the 6111 is a dual triode, Left and Right channels share the same vacuum tube without issue. The CV5 is class A tube input and class AB solid state output.