Tube amps help promote muscle growth. They promote larger efficient cabs which helps promote muscle growth. They can serve as a tool to provide nice heat in the winter. They provide a heartwarming effect to the cat that lays on top. They glow. They can sound full and rich even at low volume. If you feel like your the only dimbulb in the room, rest assured, there's probably 10 other dimbulbs in the room with you. They're totally tubular man!
What does the modern class D stuff give you? Very little, let me explain. The typical $1000 class d amp weighs 7lbs 1000÷7=$142.8 per pound. The SVTCL is $2500÷80lbs=$31.25 per pound. Class D amps encourage the use of smaller less efficient cabs such as two 1x12. So for example, using two 97db cabs for an efficiency of 100db, subtract 4db for power compression so back to 96db. Add 30db so we're at 126db. With the 300 watt tube amp with larger 100db cabs (two 8x10) we're at 103db subtract 1 db for power compression. Add 24.5db gain and were at 127.5db if we want to add more insult to injury, substitute the two 8x10 cabs for 4 100db 15 woofers, now were at 130.5db bwahaha. 131.5db oldskool vs 126db newschool. The new style setup would require another 1500ish watts to compete with 300 watts. Outlet power requirements would be 460 watts for the SVT a class D to get to the same level with 2x12 would need 3100 watts or 25.8 amps from the wall assuming an 80% efficiency. In the end, the tube system with the 4 100db 15s is 6.7times more efficient at producing acoustic sound. Imagine all the exercise you can get from lifting all those 15" cabs and amp!
Class D amps fails to be an effective way to build muscle, provide heat in winter, does not offer ethereal glow, and offers a terrible dollar per pound ratio. I rest my case.
Note: this is my attempt at humor, but may contain bits of truth in the somewhat ridiculous arguments.
