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tubes and analog

I just "upgraded" from a Mac SS integrated to a Prima luna dialogue 2 tube amp. The reason that I changed amps was that i assumed that the tube amp would be a better match for my Zu Druid speakers. The amp change was a big improvment for listening through my CDP....but not so when listening to my Rega P9. I had to switch to my spare SS phono stage (Graham slee) to get it to sound right. I was using a tube phono (AES) with my Mac. In Short, my tube amp with SS phono stage is not really an upgrade from my Mac with Tube phono stage. My question is.....should i consider a further upgrade to a better tube phono pre or is it simply that a change from SS to Tube amp is more "pronounced" in digital playback?
csmithbarc
carlbecker
27 posts
 
IMHO it matters less if its tube or SS and more about how the component sounds and fits with the rest of the system. I use tubes for all but my components to not have the "lush" sound, more detailed like SS. My amp is matched very well to my speakers. I built a tube phono pre with passive stepped atenuators for a linestage. My goal is transparency so I picked my components for this. Also I made sure that they play well together as far as impedance matching. Cost per component was not a deciding factor just sound and system matching. As an example I do not care for the sound of CJ linestages but don't mind their amps sound. I very much like what is not added by using a passive pre but care needs to be taken in this approach. My requirements are tone, dynamics then imaging and less so for freq. extremes.
atmasphere's avatar
atmasphere
11,793 posts
 
Tubes are able to retrieve greater detail than transistors and they sound more relaxed. Once detail is lost it cannot be retrieved downstream. So consider a tube phono section.
csmithbarc OP
29 posts
 
is an adjustable loading phono stage only important for future flexibilty in cart changes?
david12
1,454 posts
 
Adjustabilty is useful, but in practice, a gain of 60 to 65 with most phono stages will cover most MC cartridges, except the very low .2mv of a few cartridges. That is'nt to say greater adjustabilty is'nt useful, but it is costly and may compromise performance. I too like tubes in phono stages, but you have to accept they are slightly noisier and a gain of 60 is about what you can achieve with tubes. One way round this is a tube/SS hybrid, such as the Art Vinyl reference a J Fet/tube hybrid with Lundahl transformers for MC gain. It is a lovely phono stage giving the best of both worlds IMHO
undertow
1,033 posts
 
Adjustable for MC only.. MM I believe you will have one option, 47kohms… So yes if you decide to go with a better MC cart over the Rega you have which I assume is MM then it would be important. For MC you have several loading options to optimize the sound. I am guessing the stage you have now is MM only, if it is MC too I would assume it has some loading options for you already. I am not familure with the equipment you have, other Analog guys could help you out further. I think the AES is MM only?
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