OK, so I've got two Smallboxes sitting side by side right now. One is brighter than the other. The darker one is a 2014 the brighter one is a new 2016. The brighter one has a better, janglier feel. The darker one has a tighter feel and sounds a bit thicker. The only difference between the two is the faceplate on the 2014 is like a plexi faceplate and the 2016 is like a brushed steel. I've looked at them inside and nothing looks out of the ordinary. The 2014 has barely been used, so no wear on tubes. What on earth could account for the brightness and difference in feel?