Impressions & Review (With Pics): Sony XA9000ES w/ Reference Audio Mods Modifications

Sep 7, 2006 at 8:11 PM Thread Starter Post #1 of 18

markl

Hangin' with the monkeys.
Member of the Trade: Lawton Audio
Joined
Jun 22, 2001
Posts
9,130
Likes
54
Intro
After what felt like years of agonizing anticipation, I finally received my heavily modified Sony XA9000ES from Reference Audio Mods. Service was good, but the unit was slightly delayed by about a week over the initial estimate, though I understand these things happen. My unit was with RAM for 2 and a half weeks total, still very good turnaround time. Douglas Jesse was always courteous and very responsive to my (many) inquiries.

You may remember I recently auditioned the Krell SACD Standard CD player (see here: http://www6.head-fi.org/forums/showt...ghlight=krell). The Krell retails for $4K and was my first real “official” high-end source I’d had in my own rig for evaluation as opposed to hearing it in a dealer showroom. I liked much of what it did, but it was lacking quite a lot of what I already got through my sacdmods modified Sony 555ES (monumental review here: http://www6.head-fi.org/forums/showthread.php?t=52002 ). Overall, I preferred the humble upgraded Sony over the $4K Krell.

This comparison proved to me that the basic value proposition of modified players is sound: namely, that at a fraction of the price for a true high-end player, you can simply drop in better parts to a mass-market machine and achieve similar sonic results. You get all the advantages of the economies of scale that a major audio manufacturer can bring to bear on creating your base piece of mid-fi gear. In general, what largely enables the niche-market “high-end” companies to produce better-sounding machines (at a premium), is their use of much higher-quality components in their players, where the mass-market manufacturer has to cut costs in order to meet a cheaper price-point for the average Joe. When you choose to modify, you take a base player produced at a much cheaper cost than a small high-end maker could ever hope to match, and upgrade as much of its components as possible, and voila—instant champagne sound on a beer budget!

My previous Sony 555ES retailed at $1600 when new, I got one on close-out for about $700. The full sacdmods package for the player was $650. So, for my investment of $1350, I got a player that out-performed a $4K unit. Not a bad deal at all, I’d say.

In the past, I’ve owned another modified player, a Sony 333ES (predecessor to the 555ES) that had some modest mods done to it by the popular Modwright. Dan’s mods were a nice improvement, but the player was not nearly as good as Matthew Anker’s much more heavily-modified 555ES. So, after selling the Krell, I decided the best path for me would be to start with an even higher-end Sony base model and have still greater mods done to it than I had done to the 555ES.

So I chose Sony’s most recent top of the line SACD player, the XA9000ES ($3K retail), which I purchased used for $1300. Granted, this is hardly a “mid-fi” machine, yet it’s still shy of the real “high-end”, and there is still plenty of room for improvement over its stock components.

I then had $1395 worth of modifications (still not the full extent of what RAM offers) done to it. Most of the aftermarket mod-ers offer tubed output stages for their major modification work. I decided on RAM because their analog output stage is pure solid state. While I do like much about the tube sound, I simply hate almost all the extra baggage/hassles/anxieties that come with tubes. I also want to insure a more solid sound with good foundation for my R10s, so I’m less trusting of tube’s ability to provide that power and sound. BTW, RAM claims they can modify *any* player, but you may be a guinea pig if yours is the first of its kind. They do extensive mods very similar to those outlined here to the Eastsound player that was all the rage here a while back.

Below are pics of the player’s internals with descriptions of each of the mods.


Pics of the Modified XA9000ES
Here are some candid shots of the mods performed by RAM.

First, here is a pic of the player’s extrenals. It’s one sexy beast of a player, much better built than the Krell. The casework is quite heavy, and the player itself weighs 35 pounds! The FedEx guy struggled with it a bit.

xa9000es002-1.jpg



Now let’s open her up and take a macro look at her insides:

xa9000es004-1.jpg



Here’s a pro shot of the Audiocom Superclock 3, a special circuit that replaces the cheap stock clock (clock is almost impossible to see in the pics I took). Adding these aftermarket clocks (there are several on the market) is generally thought to be one of the best bang-for-the-buck mods you can do. Adding this mod ($295) greatly reduces jitter, and is said to yield a cleaner, more accurate sound, improving resolution, soundstaging, and ensuring the timing of the bits is as accurate as possible.

sclk3.jpg



This is a pic of the power supply mods ($300). Here is a quote from RAM describing what they did:

Quote:

• Replace stock diodes in the power supply with custom handmade ultra low impedance RAM versions.

Improvement: Replacing the stock diodes with our custom RAM versions eliminate the grain and glare of the stock noisy silicon diodes. Since our diode bridges are ultra low impedance and ultra fast, music has now more speed and more dynamics. Our diode bridges are handmade per mod order and take some time to make and install.

• Replace stock electrolytic capacitors in power supply circuits with Jensen 4-pole and Rubycon ZA/ZL series capacitors.
Improvement: These capacitors are much more open sounding, very neutral and have more speed than any other cap on the market. We have compared Blackgate FK/N, Panasonic FC/FM, Nichican Muse, and Os-cons and they are not in the same league. We replace the stock smoothing caps with an Exotic Jensen 4-pole version which provides increased performance over any conventional 2-pole design which "push" noise, the Jensen blocks noise and decouples away from the circuits. The Jensens are not cheap caps, typically costing about $50 each. These are not plug and play type caps and we HARDWIRE them from our modified diode bridges into the circuit.

• Re-wire the AC input with Audio Consulting Silver Wire, Re-engineer the power supply board and eliminate some energy robbing devices and unnecessary stock parts

Improvement: This brings more resolution, better defined and deeper bass and more sonic character. This is the final tuning of the supply to make sure the sound is balanced on the output end.


xa9000es010.jpg



Finally, the most unusual, and possibly most significant upgrade, an entirely new analog output stage made up of Audio Consulting’s Coupling Transformers ($700) and silver wire. (If you squint, you can see the Superclock 3 hiding behind them.) RAM does this same mod to all players they mod, regardless of price, including CD players that retail at $10K (though they use higher quality transformers for those). I won’t attempt to describe this mod, so here is what RAM says:

Quote:

• Delete entire Stock analog output stage (many many signal resistors, transistors etc.) DRAMATIC IMPROVEMENT!
• Replace (and add) an abundant amount of Rubycon ZA series caps for critical voltage rail decoupling
• Add Audio Consulting Signal Coupling transformers to eliminate stock stage (these are passive, meaning the noise floor will drop very significantly and no fluxations with the AC mains)
• Replace stock RCA's with WBT NextGen Versions (eddy current free) for the best RCA connection possible
• Use Audio Consulting silver wire and cotton tubing point to point for all wiring for the output stage wiring.
• Note: Since we use signal coupling transformers (passive) they do no induce the noises from power supplys and they isolate and block HF noise from entering back into the DAC chips from other components in the system. There are absolutely NO CAPACITORS or RESISTORS in the signal path in our mods!! The Analog output is wired for both Single Ended and True Balanced Output.

Now Music is so much quieter, cleaner, more resolute with no lack of dynamics! You will be stunned! Absolutely positively a whole different world of reference level performance. Much more music, emotion, and drive.


xa9000es008-1.jpg



While I’m a layperson, and probably in no position to judge, the visual quality of the RAM mods aren’t quite up the immaculate and precise level of Anker’s mods to the 555ES, but to be fair, there’s a hell of a lot more room to make it pretty inside the 555ES than the over-crowded XA9000ES.


Day 1 Listening Impressions RAM XA9000ES
Coming soon!
 
Sep 8, 2006 at 1:53 AM Post #2 of 18
Quote:

While I’m a layperson, and probably in no position to judge, the visual quality of the RAM mods aren’t quite up the immaculate and precise level of Anker’s mods to the 555ES, but to be fair, there’s a hell of a lot more room to make it pretty inside the 555ES than the over-crowded XA9000ES.


Thanks Mark, I appreciate the compliment. Now I'm really, really, really anxious to hear how that passive output stage compares to the ZapFilter. Please, write faster.
 
Sep 8, 2006 at 2:05 AM Post #3 of 18
Quote:

Now I'm really, really, really anxious to hear how that passive output stage compares to the ZapFilter. Please, write faster.


biggrin.gif
I'm going as fast as I can! Give me a few days, and I'll have a preliminary response.
 
Sep 8, 2006 at 8:26 PM Post #4 of 18
Believe it or not, I'm finally at a loss for words.
biggrin.gif



This player is just amazingly good. I have to now go through the process of re-learning all my favorite albums, and re-learning how to think about and write about sources. I've got no real reference point right now, so I'm still getting my bearings.

SACDs on this machine are spine-tinglingly great. By far the best digital I've ever heard or imagined. I'm wandering around without a map I'd say.

Overall, the player is absolutely grainless, no "digital" signature whatsoever, it sounds eerily *real*, even on Redbook CDs. It has an almost spooky soundstaging capability.

My only criticism I can offer right now is that it doesn't *quite* have the same sweetly fattened bottom end of the sacdmods 555ES, but it ain't no weakling either. It's well within the realm of things that can change/improve with burn-in.

Speaking of burn-in, I'm at a loss for how this thing could possibly improve (bass excepted). It exhibits none of the usual nasties that get ironed out with burn-in. It's dead neutral, and beyond clean and clear. It sounds "done" but we'll see. I'm told it needs 300-400 hours of burn-in to reach its full potential. I can't wait!


P.S. It's such a relief to have a player that just *works*. Unlike most high-end machines that are ergonomic nightmares with all kinds of operating quirks, this player and its remote are responsive and fast. Everything actually does what it's supposed to do!
 
Sep 8, 2006 at 8:46 PM Post #5 of 18
Quote:

Originally Posted by markl
Believe it or not, I'm finally at a loss for words.
biggrin.gif



And to think it took all this time to get to that point
biggrin.gif
.

Interesting impressions, I've always wondered how those Audio Consulting output transformers are. I think it'd be interesting to see how they compare to something like the Lundahl output transformers in my modded SACD1000.
 
Sep 8, 2006 at 11:31 PM Post #6 of 18
I only see the one...and I'd like to see them!!
biggrin.gif


Congrats on the new ear toy markl. I'll be eagerly awaiting further impressions.
 
Sep 9, 2006 at 1:40 AM Post #7 of 18
Do the multichannel outputs on the XA9000ES still work? I'm curious as to whether they paralleled all three output stages to get sufficient current drive for a totally passive output stage. The player's XA777ES predecessor had a similar feature where it paralleled the three opamp based output stages when in stereo mode. I'm told the XA9000ES does the same thing. So all someone would have to do is cut off the stock output stage, connect a wire from all three DACs to the transformer primary, and there you go. You then have three parallel DACs, just tell the customer don't play anything multichannel.
 
Sep 9, 2006 at 2:26 AM Post #8 of 18
Quote:

Originally Posted by markl
This player is just amazingly good. I have to now go through the process of re-learning all my favorite albums


fun, ain't it? the same thing happened to me when i went from my stock SCD-C555ES to my North Star M192.
 
Sep 9, 2006 at 12:49 PM Post #9 of 18
Quote:

Do the multichannel outputs on the XA9000ES still work?


This is a good question. I'll do some experimenting later today.

Interestingly, the ouput level of the XA9000ES seems to be identical to the 555ES sacdmods. I am able to keep the volume level of my headamp at exactly the place I had it before, so there was no drop in output level.
 
Sep 9, 2006 at 10:04 PM Post #10 of 18
Nice player, Mark. I've always liked it's look & feel. The stock version was a bit on the digital side for me, with a somewhat weak low-end. Modded units always intrigue me as I have been on the benefiting end of several such players (SACDmods & Modwright). Glad to hear this model scales up well with these upgrades.
 
Sep 10, 2006 at 7:51 PM Post #11 of 18
Well, either the player has hit a rough patch in its break-in, or I'm just starting to find some nits to pick. I'm told it needs 300-400 hours burn in, I have around 50 hours on it, so a long ways to go. I've noticed some sibilance, and a bit of a metallic sheen to it with some material. It sounds a bit like an agressive silver cable at this point. There's something slightly "off" about the tone/timbre. It could use some extra (i.e. un-natural but pleasant) warmth. It's insanely ruthless, cutting through the recording like a Ginsu knife, and I can't decide yet if it's maybe too much of a good thing for me at times.

Still, the dynamics are coming along nicely, it has an incredibly powerful, punchy sound with the drums, greater even than the 555ES sacdmods with Zapfilter. It's still not quite as fat in the electric bass department, but it's making gains. No denying the RAM XA9000ES is blindingly fast and nimble. It's a super-exciting, involving player, it's anything but dull and boring or polite. It could be a bit "too much" for some listeners I think, but just the ticket for others.

The background is pitch black. Noise floor is much lower than 555ES which was already impressive. The way the XA9000ES stacks 3 DACs per channel apparently lowers noise level by 3 or 6db (can't remember which), either way, a not insignificant amount. The output transformers in the RAM unit probably also help. In any case, many many little teeny tiny details I never knew were there before are revealed on my new player.

So, overall, I'm cautiously optimistic, and anxiously awaiting results of full burn-in.
 
Sep 12, 2006 at 3:12 AM Post #12 of 18
looks like modded players are bang for the buck if not more so

i am currently looking for a modded player for my next source
 
Sep 17, 2006 at 1:24 AM Post #13 of 18
Wow, so I went through all kinds of fire drills, air-raid warnings, duck-and-cover exercises with this player.
orphsmile.gif
I admit I panicked early on after the initial euphoria subsided. I went back and forth through positively *endless* hours of A/B-ing against 555ES Hot Rod at all stages of burn-in. My opinion of the RAM XA9000ES ping-ponged almost daily. I love it, I love it not...

This player is so radically different from what I've heard so far, I was at times at a loss for how to perceive it. It made me uncomfortable at times. This has been a MAJOR adjustment for me.

There can be no doubt that the RAM XA9000ES sounds very different from the formidable sacdmods 555ES. I've come to know and love and trust the sacdmods 555ES over 4 years of heavy use. My brain had grown well accustomed to its presentation (brain fully "burned in"), so it seemed to be "right" (or the devil I knew at least), where the XA9000ES sometimes sounded "wrong". The 555ES defined my impression and feelings about all my music for all that time, so that's a lot to overcome. Over time, however, I've come to see that the RAM XA9000ES is not "wrong" so much as "different".

I've had to go through serious de-programming from the 555ES to adjust to the XA9000ES' presentation. I've had to re-learn a lot of my favorite albums. This process is still on-going.

The RAM XA9000ES is really like a laser that slices through your CDs, letting the chips fall where they may. If the CD/SACD has flaws, get ready to experience these flaws under a microscope. This differs from the 555ES's love of everyone and everything it touches. *Nothing* sounds bad through the sacdmods 555ES; incisive as it is, it still imparts a forgiving warmth to everything that makes mediocre recordings sound OK. The RAM XA9000ES is absolutely RUTHLESS and forceful in exposing inferior recordings.

The RAM imparts a very individual characteristic on everything it plays-- different recordings sound radically different. Whereas the 555ES makes everything sound roughly the same-- quite good, even if not always spectacular.

At times I thought the RAM XA9000ES was "bright", or even "aggressive", but it turns out, it's only as "bright" as the the recording it's fed. So many modern CDs are way too bright, as anyone knows who frequents Steve Hoffman's forums. The XA9000ES with RAM mods gives them nowhere to hide. That obviously cuts both ways.

The RAM XA9000ES is unbelievably "clear", "crisp" and "sharp" of foucus. It leaves no digital bit on the table. It has dynamics to burn. The first thing that will strike you is the sheer SCALE of the music. Everything is friggin' HUGE. DEEP and 3D. Personally, I've never experienced this so-called "exaggerated" soundstage I've seen sometimes complained about at times on these forums. For me, there's just no such thing as too much soundstage, too much air, too much dimensionality-- I'm a sucker for it and I fall for it every time. The RAM XA9000ES really scratches that itch very satisfyingly.

The RAM XA9000ES has an almost impossibly "black" background. Where is the noise floor on this thing? You'll never hear it. CLARITY is the key word with this player. The 555ES sounds hazy and grainy by comparison.

I thought at first that the sacdmods 555ES had more bass, but with burn-in, that's no longer the case. The RAM XA9000ES has so much pure signal to deliver, it has immense slam and heft, that carries over to the bass as well.

This piece strikes me as a polarizing love it or hate it item. For me, I have had to adjust-- I can clearly recognize it's giving me so much more music and information. But because it lacks some extra added warmth, it's not the kind of thing you'd gravitate to automatically, until you adjust and start doing A/B's like I did.

OK, all that said, I'm going to be experimenting with interconnects and maybe power cords. I suspect that Virtual Dynamics interconnects could impart a little extra warmth and bloom without losing the resolution and dynamics, so I'll follow up later when I've got them in place...
 
Sep 20, 2006 at 3:10 AM Post #15 of 18
Sounds like a brutal, revealing source, which is my kind of preference.
 

Users who are viewing this thread

Back
Top