Phono Preamp Tube Rush

I think it's more about what sound you want than tubes that are worn out. Right out of the box, different tubes make the VTSP-2a sound different, even better in my opinion. Others may be just fine with the stock tube sound. It's a matter of personal taste and also how much time and money you want to invest in listening tests with other tubes.

@lewm

I completely agree that not everyone is going to recognize the same or even similar results as me as the change is certainly both system dependent and based on personal tastes. The stock tubes were only 7 months old so they had plenty of tread left. I just thought I’d offer a data point because in general I think you’re hard pressing to get a better sound than what Keith brings into the box from the get-go.

@dhcod   +1  I think that sums up my perspective as well.

Ok, 24 hours later and I embarrassingly now need to confess that I'm not preferring the Gold Lions over stock EH's in the Herron.  At first I was smitten with the reduced noise, blacker background, silky smooth mids and extended bass.  I am now realizing that these sonic qualities came at a steep cost of losing the air and wide-open presentation.  Late last night during listening I became keenly aware that the highs were getting rolled off and the bass was actually bloated.  I immediately rolled Keith's stock EHs back in the pre and ahhhh.....everything was so much better.

Interesting lesson here in the psychology of perception.  I was initially seduced by the quiet and a "different" sound, and it took me a bit of time to realize different was far from better.  I have read many times that it's hard to improve on Keith's tube voicing and It'm seeing that now.  I'm still curious about rolling tubes in the Herron but I suspect you need to get into some nice NOS tubes like Tele or Mazda to move the needle any higher.

I played the NOS game with the vtph-2a and came to the same consensus, specially the bloated bass. Decided to stick w stock on this guy - no worries