There hasn't been any startling new development in this area of audio technology and the factual information provided three months ago isn't in need of amendment. What was true then still is: amplification should make sounds louder without otherwise audibly changing them. Competent engineering does this regardless of the nature of the output device. Tube amplifiers when correctly designed can be competitive with solid state amplifiers in sound, but not likely in price.

-----------------------------------

Enjoy the music, not the equipment.