KT150 to KT120..or KT120 to KT150

In my listening, I feel kt150 is much hifi than  kt88 and  kt120.

I have kt150 right in my audio research ref 75se,and  I definitely will change back to kt120 when these kt150 retire later.

There are lots of things in the music,which you prefer? Will decide your choice with the tube.

I listen vocal Jazz, voice really matter to me, the music  meat is important to me,large 3D body is not so important to me.

It is my choice.

So in total, you definitely can not say which one is better, but obviously there are two league, kt150. Or kt88,kt120.

@decooney  +1 very good description between kt120 and kt150.

My ARC VT100 MKiii  sound really good with 6550 compared ARC Ref 75SE KT150

VT100 MKiii more meat and more like the actual sound

REF 75se, more transparent sound and more like flying on the air ,it is beautiful, just different style

I personally prefer the sound of VT100 a little bit more.

I do not know if I install 6550 in Ref 75se,the sound could be better.

The sound is definitely different with kt150 and 6550. Which one you prefer,I do not know. Each one has his personal preference.

I use two power amplifier exchangeable 2-3 days, and I feel good, and taste the difference.