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Cary Audio SLP-05 First Impression

Hi,  I just received my Cary Audio SLP-5 tube preamp this weekend.  It’s only been less than 48 hours and I can’t wait to share my experience with my fellow A’goners. If I have to summarize my initial impression of this unit in one word, it would be:  WOW!!!

I don’t consider myself a true audiophile, so I don’t really have a strong audiophile vocabulary to describe the sound quality, but a few clichés come to mind:

  • sounds like the musicians are right there in my room
  • holographic 3D sound
  • dead quiet
  • sweet & non-fatiguing top end
  • deep bass

Couple of things I hope will continue to improve is a tiny bit more punchiness in the mid bass, and smoothing out some occasional graininess at the top end.

My strongest impression so far is the overall imaging of the sound, and the sense that I’m listening to live music.  Last night I had my system casually playing in the background when I was doing stuff around my apartment, and Eva Cassidy’s Live at Blues Alley album came on.   I was suddenly drawn to the music, and for the first time ever, I finally understand what the description ’sounds like the musicians are right there in my room’ means.   It was surreal.   It brought a big smile to my face.  It was simply beautiful.   Need I say more?

This is the first line level tube preamp I’ve ever owned.  I do own the Herron VTPH-2A tube phono preamp.   Now I know what all that fuss and craze of tube pre/power amps are about.   I guess you simply have to experience it to appreciate it.   I still feel my Parasound JC2 and JC5 combo sounds great, and I am not planning to get rid of them anytime soon.   It’s just that the Cary SLP-05 completely opens up a new music dimension that I’ve never experienced before, and so far it’s been very pleasant.

I will consider doing the ‘Ultimate Upgrade’ offered by Cary at $1600 at some point.   Please feel free to share your experience If you are a SLP-05 owner and have done this upgrade.

I have purchased so many components in the last couple of years based on suggestions and comments that I received, and stuff I read in this forum.  So thanks to those who continue to contribute and share their experiences to fellow members. 

Finally, a big shout-out to @ghdprentice for your suggestion of tube preamps and brought up the Cary brand name in one of my other discussions.  This preamp is certainly a keeper.

PS:  there are a couple of changes Cary had made to the latest production of SLP-05.  It now comes with a universal remote control.  The same one that they sell for $190 on their website, instead of a basic 3 buttons remote that I read from some older reviews.   Also they no longer recommend stacking the control unit on top of the power unit, and therefore those indentations on the top of the power unit are gone.  It is simply a flat surface now.   Actually to my surprise, the power unit runs much hotter than the control unit.  I always thought the control unit would run hotter because that is where the vacuum tubes sit.

PPS: My unit was shipped with the blue power LED missing.  After contacting Cary Audio support, they told me it was most likely dislodged due to rough handling by Fedex.  So the unit is now going back and i would have to wait for a replacement.   That sucks, but kudos to the customer support folks at both Cary Audio and Music Direct for their great service!

Thanks for reading.

128x128xcool
immatthewj
1,385 posts
 

Something else that interests me are the meter readings:

going from memory I think that you said that "plate voltage" (VDC) was pegged out, and that "plate current" was down to 30 Ma. I really have only a less than rudimentary understanding of this subject, but I am thinking that even though preamp tubes have different functions than amp tubes, they still need to have some sort of bias control (meaning the current flow through them, which would be the desired Ma reading) like amp tubes do, and if I am correct, on the preamp it would be an auto-bias function.

But I could very well be wrong about all of that; hopefully someone will clear up my cloudy understanding of those two readings.

immatthewj
1,385 posts
 

. . . so pressing on with my musings on this, I believe that it is the rectifier’s function to convert the AC out of the wall into the DC current that goes through the preamp tubes. So I would think that there must be an issue in that function of your pre, as you were saying that plate voltage in VDC was pegged out.  But again, there is probably way more to it than this, and I am probably way over simplifying it, if not completely misstating it. 

xcool's avatar
xcool OP
273 posts
 

Hey @immatthewj,  FWIW, the possibility of the rectifier tube went bad was one of the discussion points I had with Cary support.   He initially was going to ask me to open up the power unit to check the rectifier tube.   Later on he decided that it is most likely not the rectifier tube.  He said if it were the case that the rectifier tube was bad, then the readings of the 2 meters would both be at zero.

The fact that the current was at 30 mA, and not the normal 60+ mA seems to suggest to me that the tubes are not drawing enough current, and are possibly malfunctioned.  Then again, what do I know.

immatthewj
1,385 posts
 

The fact that the current was at 30 mA, and not the normal 60+ mA seems to suggest to me that the tubes are not drawing enough current, and are possibly malfunctioned.  Then again, what do I know.

or, I was thinking, something wrong and not providing the current.  But, sadly, this is above my pay-grade.

decooney
1,906 posts
 

@xcool if its a long ways to ship it back to Cary Audio, seems like it would be easier/faster to have a local shop tech test all eight 6SN7s and your 5AR4 rectifier tube for you.  Depending on what city you are close to, there are usually audio/electronics people around or guitar amp people with tube testers around.  ID your city and you may have someone near you on this forum or AudioCircle, or AudioAsylum / TubeAsylum. Toooob Heads are everywhere or somewhere in a basement geeking out on their tooooobs and testing equipment. LOL Hahaha.  

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