All black Citation 16A which is the refined model of the 16. Sounds great, I have been using this beautiful amp in my home system and it has been very reliable. No noises or hum, quiet on power up and down. Smooth sounding with a variety of pre-amps. All power level lights work, switches work including Impedance and Sensitivity Level switch. Does not run hot, never modified or rebuilt. Channel A and B lights do not light, Ground pin on power plug clipped off. small grills above output transistors are missing, see photo