Originally Posted by Za Warudo
I'm considering getting a T1 for my HE-400. Even though some people have said that the T1 works well with it, I'm a bit confused because the T1 has an output impedance of 10ohms whereas the HE400 has 35ohm of impedance. Shouldn't the HP have at least 8x the impedance of the output impedance of the amp to work well? Also I'm confused at how a DAC would use a tube to color its sound, since a DAC should only convert digital data into analogue, how would a tube change the way that works?
In my opinion, don't. It might be decent with an HE-400 but it is absolutely horrible with my Fostex T50RP (low impedance ortho). You'll be better off looking somewhere else.
No idea on the 8x factor though.
A DAC changes from digital to analog, as you've said. But each tube is different and has an effect on the sound, this effect is called colouration, because the tubes add something that wasn't originally there. A tube changes the sound as it flows through it. Since it isn't a tube amp, the sound should isn't affected by the tubes in an amp(From what my limited research tells me)
Colouring has nothing to with how can a tube in a DAC colour a sound, even an attenuator or a cable can cause colouration imo.
Mind you, I might be wrong.