darkblacksmoke

Responses from darkblacksmoke

Do NOS Mullard EL34 tubes last much longer than NOS SED (Svetlana) EL34 ?
 I doubt that original made-in-Britain Mullards will last any longer. Don't forget that the so-called NOS Mullards are actually present-day production from Russia. I find that true NOS tubes often test far stronger than their reissued counterpa... 
Do NOS Mullard EL34 tubes last much longer than NOS SED (Svetlana) EL34 ?
forget life, either should last a long long time. which sounds best to you? do you want to listen to the less preferred sound for a long long long time? You could buy from a source that lets you return them, try the least expensive compared to ... 
Tube amps under $7500
"Sounds optimal, but how do you manage level matching, etc.?" @hickamore  If you're referring to gain matching different amps in a bi-amped setup, I do it with my McIntosh MEN2200 Room Correction System vis a vis its low/high pass filters/output... 
Tube amps under $7500
@mdalton  Bi-Amping is the way, at least for me. I have two mono-blocked MC275s (running GEC A2900s and KR Audio KT88s or GEC KT88s depending on any  given day) up top and a pair of Pass Labs xa160.8 mono-blocks down under. I love how they sound... 
Tube amps under $7500
The MC275 is a great amp once you throw away the junk OEM tubes. Which should he done with immediacy IMHO.  
Do NOS Mullard EL34 tubes last much longer than NOS SED (Svetlana) EL34 ?
That's an insane price for the Mullards. Who is quoting you that?  Source: I buy and sell rare audio tubes full-time.