- Feb 12, 2006
- 60,952
- 5
- 220,600
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Actually, all the orange glow tells you, is that you've got a clear line of sight to the heater filament. Depending on the length of the plates and the internal structure of the tube, you may or not be able to see the heater at work. Some brands of tubes barely light up at all, viewed from outside.
V1 is a different model from the tubes in V2 and V3, thus the difference in outward appearance...
Correct.

