The Inertia Tube Hybrid Amplifier is a great step into the amazing sound of Wathen CryoTone tubes. The special Wathen CryoTone tubes set this amplifier apart from every other amplifier brand in the world. No other tube comes close to the smooth, detailed and expansive sound of CryoTone tubes. This hybrid amp delivers 50 clean watts to each channel for an amazing stereo soundstage. This amp is a wonderful match for the Wathen Inertia Cubes. This unit also has preamp outputs that can be used with the Inertia subwoofer.