How long, in general, do tubes last for?
In the past when using tubes for amplifiers for speakers, I had to replace them every 3 months or so, and the shop I got the amps from said this was so, and they did need frequent replacement (but maybe these were low quality tubes or something?). But reading online it seems like tubes normally last for a much longer time, like 2000-5000 hours or something... What's been your experience?
Also, with balanced, I have an existing DAC that is not balanced... I am considering balanced amp and headphones, but DAC is not... Will this mean that the main advantage of balanced is no longer there? In other words, is it more important that the DAC is balanced?
You might want to check this out and let us know about it later on. :D