Jedinite24, tubes are similar to light bulbs in that in rush current is their main enemy. You will notice that most light bulbs blow out when turning on a light, that's in rush current.
Tubes will last longer if you avoid turning them on/off. Certainly some previous advice is solid. Do not leave tube amps on 24/7 unattended, and you can use stand by circuitry if your tube equipment employs it.
Tubes will last longer if you avoid turning them on/off. Certainly some previous advice is solid. Do not leave tube amps on 24/7 unattended, and you can use stand by circuitry if your tube equipment employs it.