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
Pualy...thosearenotmywords...I'mnotthatsmart. Just let this guy play audiohile. He's doing good and has $$$. Dealers will love him. It's when people like him hear a system like mine when they have a bad reality check.

I always look good, most always am right yet not always in control. I did figure out big spender's audio problem--unlike the *professionals*...

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I found myself reacting much as the first poster when I read this thread,in that cartridge change or upgrade might be your preferred path.With a Planar 9 it's well known that the Rega Exact cart rather than the Elys is the best match.Rega also have a new MC cart in their line called the Apheta now.I have always found it edifying to switch between cartridges and note how my system handled each one differently.Less expensive than switching between gear anyway.
Reading this thread over the past several days has been entertaining, to say the least. I've learned a few things from all of the technical discussion...mostly that I know very little.

Like a previous poster stated, I'd look to the tubes in the AES unit first. Some tube rolling/upgrading/replacing might be a less expensive way to attack the issue. Some Herbie's Audio Labs tube dampers would be a great tweak to try...they will help with your "muddy" bass, as well as "clean up" the sound a bit allowing the low level detail to come through.

Maybe, as some have stated, the AES and the PrimaLuna will never play nice together.
Some Herbie's Audio Labs tube dampers would be a great tweak to try...they will help with your "muddy" bass, as well as "clean up" the sound a bit allowing the low level detail to come through.
Excellent suggestion, and a very quick and easy way to determine if overly microphonic tubes are to blame for the muddy bass.
Raulinruegas, I'm not insulting you, but your description of our product just happened to be something that has not been documented in nearly thirty years of business. I had to call you on it plain and simple.

Like anyone else in the business, sure we've had failures. But not 'blowing up' on account of a tube failure! which is the context of your statement. As an OTL manufacturer, we had to face the prior legacy of Futterman et.al. who had convinced the world at that time that OTLs were unreliable. We had created a way to make them pretty well bulletproof, so that a tube failure, speaker short, open input or total overload could not damage the amp.

I'm well-known for doing stunts with the amps at shows- pulling power tubes while the amps are playing, shorting out the output while the volume control is turned up to the limit and other things- things you would expect to damage an amp if you did them.

One time I had a tube arc when I had the speaker terminals shorted during just such a demonstration. No big deal- the amp was playing as if nothing happened when I removed the quarters I was using to short out the speaker terminals.

So you chose to describe the the one thing our amps *don't* do. So of course I had to call you on the carpet. In order for these forums to work you have to stick avoiding misleading comments.