lol my ritual in gaining new gear has begun...i think what if theres something wrong with it!...i have an engl powerball head just bought and it has a see through front grill as you know....i notice the 4 tubes back light, light up red wen i turn it on..but then wen i go off standy by mode into play mode it seems as though 2 of the 4 tubes hav a purpley tinge to them when i turn off standby mode into play lol is this normal in tube amps? i cant notice any audible defects but that paranoia is takin over! someone reassure! thanks rex