They are directly plug n play... They are different then the siemens tubes... More bass, bigger sound stage, seems like they have more detail but they don't have that crispy crunchy lower treble like the siemens tubes do. I feel like the the voskhod has more detail, is warmer and less airy. I like it for most types of music. The siemens tubes I prefer for older rock/punk/metal recording because it accentuates the crunch of electric guitar.
I had thought I read they where a more forward crisper sounding tube, that was the reason I purchased them, especially for my 325's. Maybe I'll like them with my 80's, just have to wait and hear them. Thanks for your thoughts on the sound of these tubes, I appreciate it.
Edited by joseph69 - 7/31/13 at 5:21am