I can't address the lifespan of the amp and don't care to examine the actual effect of the tubes - the sound it has is the sound it has. And what it has is clarity and likely enough power for most near field listening applications. I can't say it's an audiophile product but with speakers that are efficient and played flat provide enough bass and high end for your liking, it could be a pleasing pairing. I don't care for the tone controls, they are not the most effective or musical. A bump to the 2:00 position isn't bad, but push them and they reveal what they lack. I like the Bluetooth function which makes it great for playing content from tablets or phones. I used this amp for movies in the bedroom and paired with a small pair of Tannoys is quite nice. It seems to deal with transients quite nicely making the cutting edges of music and sound effects in movies quite vivid and lively. It sounds "quick". Compared to other (meaning better) amps, it is SLIGHTLY anemic, without the bass grip or body of the remaining frequencies. But I come back to the functionality, clarity and we can't forget cool styling of the glowing blue beneath the tubes. A remote with even a volume control would've been nice.

bought this as functioning decor and to connect my record player. however, when switching to phono, i get somewhat loud humming noise. it seems to me that transformer noise amplifies through built in pre amp. so I only been using its Bluetooth and USB as the hum pretty annoying when i play any record.

Sonorité correcte,par contre le BLUETOOTH PAS FORT à peine 20 pieds L'ensemble joli Fonctionne bien en USB

Bought for a friend. As a recording studio operator, I can tell you, this is no Bryston - but I bought it for her just for the retro aesthetics. It's an amp. overpriced IMO for what it delivers. Bluetooth is easy, the result is pretty unremarkable. Don't expect be blown away because it says 'tube'. It's just a bare basics amp, not very much power, not very fidelic - but it's cool looking, I'll give it that.

Hilarious. What do you actually expect for a 175 tube amp. It is waaaay better than you deserve. I am up grading.

Sonorité agréable surprenante . Convient aux pièces de taille petite-moyenne.