Thinking about upgrading, but wondering about diminishing returns


Hi folks,

I have mostly Conrad Johnson Gear-- LP260M SE mono blocks, with 8 kt120 tubes each.  These are SET amps that put out 270 wpc.  I have the Conrad Johnson  ET5 preamp, with a Telefunken 6922 tube, and a pair of EgglestonWorks Viginti speakers (their new take on the Andra's).  Phono stage is the Pass Labs XP-15.  For source material I have a Rega  RP10 with the Apheta2 cartridge, and the Oppo BDP105 (Modwright upgrades) CD player.  I have Audioquest Colorado interconnects (go easy here :) ) and Audioquest Oaks for speaker cable.  My listening room is 13 x 19, carpeted floor, drywall walls and ceiling (well insulated).  I set up with the equipment on the long wall, with me listening from the 13' side (with speakers in about 2 feet and about 8.5 feet apart).

I listen to a mix of vinyl and cd's; vinyl when I have several hours to listen quietly (and clean the records on the Clear Audio Matrix Pro Record Cleaning Machine).  I listen to CD's when I have less than an hour, and for when I work out.

I am thinking about upgrading a single component, probably my preamplifier, to a Conrad Johnson GAT2 or a Pass Labs XS preamp (solid state). My thought was that this will likely make the most improvement in soundstage, imaging and overall musicality.  A used GAT2 will be at least $14K and the Pass XS used is about $19K.   I am interested in hearing from those who have had experience with upgrades like this.  I am also wondering (as a middle class guy)  how close does this come to the law of diminishing returns?  Finally, is this the component you would upgrade, and if so, if you had a wide range of musical tastes-- mostly classical/full orchestra in vinyl and rock on CD's, which preamp would you select?

Please feel free to take a swipe at these questions, and also feel free to point out if you feel I should be asking different questions that will help increase my knowledge and advance the cause for others.

I am likely to go to an audio show sometime, but please don't suggest that I go and listen to the gear, as that's at least 200 - 400 miles, and I don't feel right about going to a brick and mortar store knowing that I will almost surely buy used.

Thanks in advance for whatever assistance you can provide.


Ag insider logo xs@2xliamowen
OK here is my 2 cents worth. If you want musicality then the Pass preamp is kind of not going to do what the CJ preamp will do, SS versus tube. BUT you are not asking for that much to begin with. Opening up the sound can be as easy as changing preamp resistors to Caddock, naked Vishay or Shinko (very musical) all for about $25 in cost plus installation. If you want to make a major improvement then you need to upgrade the phono stage and the DAC. But that will cost you big time.

Liz wrote Id seriously suggest checking out the Marantz SA-10 ($7000 list) as a great device. Esoteric and PS Audio also make good silver disc spinners. The Marantz is particularly good with CDs.

My opinion differs significantly.  The Marantz to me is an average CD player.  I have a buddy who spent $3K or more and it still sounds just OK.  The Esoteric is more dry sounding than musical.  How do I know this, well a speaker manufacturer uses my tubed DHT DAC as the DAC to a $27K Esoteric CDP because he feels the Esoteric which sounds excellent does not provide the  overall musical experience he wants to demonstrate his speakers.  The guy with the modified Marantz also changed to the PS audio and has again moved on from there stating 

The (new transport and DAC in comparison to the PS Audio set-up he used I won't mention here) is open, has great prat, and dynamic with very good micro and macro detail. I think it is transparent and not colored. What it isn't is dry, thin, sterile, and fatiguing. 

Tonally, it sounds natural with nice texture and has some meat on the bones (which to me is how a lot of acoustic instruments sound) but still has bite when a trumpet is blown harder, IMHO.
  
 "I like it much better then my PS Audio Memory player and Directstream DAC combo" 

Not sure how helpful I am but that is what I can contribute.

Happy Listening.
It is nice to just change things up.             
Follow your Luci...Do It.  
Look into Room Treatments for sure spend $5000 there and you will be amazed...truly
Think about it, look at ANY legit recording studio, they spend big $$ building the rooms.
Good luck on your endeavor, bet that system is amazing!
Scott
Donvito, according to Conrad Johnson, it is rated at 270 watts, into a 4 ohm load.