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.


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Showing 3 responses by lak

In my opinion, you have a rock solid system and the law of diminishing returns is a killer. One will have to spend a lot of money to hear a bit more soundstage, imaging, and overall musicality. I'm guessing that's what you are after by your post. I honestly am not sure when all is said and done that the switch in preamps is going to make that much difference. As Audiophiles, many of us (myself included) get bitten by the upgrade bug not that there is anything wrong with that.
I'd be curious to know if you are using dedicated circuit breakers and upgraded AC duplex outlets? In not to me that comes forst.
@laimowen, I can't emphasize enough the need for at least one if not two dedicated circuits (assuming they can be added bassed up your room location, whether you own or rent etc.) and an upgrade to a more high-end  AC outlet.
This suggestion will improve the sound of your music so you can really hear what your system is capable of. Those that have not done this are missing out on a very important tweak that can be inexpensive vs purchasing other types of components.
Other suggestions such as placement of speakers and room accustics are also right on target.
"I listen to CD's when I have less than an hour, and for when I work out".

Because of the limited time, an hour or when working out, maybe the OP doesn't want to spend the funds on digital, at least that was my understanding in his origional question.