Unit is in excellent condition. Has small marks on top which could be removed w a little elbow grease. Obviously, they don’t impact performance in any way. Low hours and used in pet and smoke free environment
"The KWA 100SE includes the following upgrades:
40% increase in number of output devices per channel.
100% increase in main power supply capacitance per channel.
Upgrade of key signal and power supply capacitors to MWI custom capacitors.
Upgrade of key signal path resistors to Takman Carbon Film resistors.
The result is better bass response, improved control and low-level detail an overall resolution.
The KWA 100 provides the strengths of both tube and solid state products: 3-D sound-staging, holographic imaging, and a beautiful midrange of tubes, combined with sparkling highs, low distortion, bass resolution, and control of solid state." http://www.6moons.com/audioreviews/modwright6/kwa100_5.html