First impression: Herron VTPH-2A phono preamp
What improvement is the VTPH-2A vs the VTPH-2? I don’t think there’s much from what I saw of the specs, the 2A is 100ohms lower in output impedance, (400 instead of 500), the rest seemed the same. 2: http://www.herronaudio.com/images/vtph2data.pdf 2A http://www.herronaudio.com/vtph2specs.html at the bottom Yep, 8db lower noise on the 2A Cheers George |
Regarding the 8 db spec difference in S/N ratio between the VTPH-2 and VTPH-2A that George pointed out, I can say that one thing which has particularly amazed me about my VTPH-2 is how quiet it is. In fact when I listen with my Stax electrostatic headphones and no music is playing I hear absolutely nothing even with the volume control on the Stax amplifier at max (which is **way** higher than I would ever set it while listening to music). (With speakers I do hear some slight noise at high volume settings if I get close to the speakers, but that is clearly being introduced elsewhere in the system). I see that the 80 db spec for the VTPH-2 is accompanied by the words "noise level will be tube dependent." Perhaps the 88 db spec for the 2A simply reflects a change Keith made in his choice of tube manufacturer at some point in the evolution of the design, and/or a change in the criteria he applies in the tests I assume he performs to weed out noisy tubes. Best regards, -- Al |
I`ve been wondering lately if there would be an improvement going to the VTPH-2 from my VTPH-1 MC Plus. On the surface it doesn`t seem to be cost effective for me because I don`t see myself going back to MM cartridges. Why pay for features that I`ll not be using !? Has anybody here compared the two versions using the same MC cartridge ? |
