The Oracle CD 2500:
A Prophesy

Ed Momkus

August, 2006
 
         
 
 
         
  Specifications:

Type:
CD player/transport
Resolution: 24 Bits
Mechanism: Philips CDPro
D to A Converter: Crystal CS4390, 24-bit/96kHz Delta-Sigma
Oversampling: 128x
Signal to Noise Ratio: 115dB
Dynamic Range: 106dB
Outputs: RCA-Analog (1 pair, Cardas Rhodium plated RCA), BNC-
digital
Load Impedance: 5kΩ min., 50kΩ max. (Analog), 75Ω (Digital)
Output Impedance: ‹ 100Ω (Analog), 75Ω (Digital)
Output Level: 2.4 Volts (Analog), 0.5 Volts, Peak to Peak @75Ω
load (Digital)
MSRP: $9,380
  Manufacturer:

Oracle Audio Technologies
6136 Blvd. Bertrand Fabi, suite 101
Sherbrooke, Quebec, J1N 2P3
Canada

Tel: 819-864-0480
Fax: 819-864-9641

URL:
http://www.oracle-audio.com/contact.html
Email: info@oracle-audio.com
 
         
         
         
  You youngsters out there may think that Oracle is the name of a database management system, and the
name of the company that owns and sells it.  You older (and, I hope, wiser) folks know that an “oracle” is an
entity that is a source of wise counsel or prophecy, usually supernatural in nature.  In Greek mythology,
prophesies or advice often came from the gods, as spoken through another object or life-form. In classical
Greece, the pre-eminent oracle operated at the temple of Apollo at Delpi, and was named Pythia -ever
hear anyone comment that someone made a “pithy” statement?  This oracle exerted considerable
influence throughout Hellenic culture, and the Greeks consulted her prior to all major undertakings.

Of course, you audiophiles know that Oracle is a Canadian maker of high end audio components, including
the Delphi turntable, the Temple phono stage, and a range of fabulously-designed and revealing amps and
digital front ends.  One of components is the Oracle CD 2500 CD player, the subject of this review.



PREPARE TO CONSULT THE ORACLE
 
         
 
 
         
  Before I start on the “meat” of the review – the part that describes the CD 2500’s musical qualities – a few
“appetizers” are in order.

The first “appetizer” is that the Oracle CD 2500 is one of the most stunning pieces of audio art that I have
seen.  One look at the picture will convince you.  It looks even better on my component stand than it looks in
its promo glamour shots.  I say this even though I personally don’t care much about a component’s
appearance.  However, there is no way that this CD player will not rank a 9.0 or better in even the most
critical significant-other’s eyes.

The second “appetizer” about the Oracle CD 2500 is that to call it a “CD player” is simply inaccurate.  The
term “CD player” conjures up visions of a one-box unit that incorporates a transport and DAC.  The CD
2500 is more like DAC and transport separates that are united by a common platform, with the power
supply for both housed in an entirely different enclosure.

The third “appetizer” is something about my preferences and my system.  You, as the reader, need to know
that I am a committed redbook digital aficionado.  The front-end of my main system is all-digital.  It’s not
that I don’t like exotic turntables with high-quality tonearms and cartridges and world-class turntable amps.  
In fact, I love them!  It’s just that in 1984 they didn’t make (and I couldn’t have afforded) the kind of out-of-
this-world-performance turntables that are available today.  I had a very nice Bang & Olufsen turntable, but
fell for the “perfect sound forever” hype that has taken another 15 years to approach reality.  I sold all my
LPs and bought a CD player that I was happy with for several months before its flaws starting becoming
more and more apparent.  I bought a second and third CD player, noting in each one differences that
weren’t supposed to exist between players that were ”merely” reading 0’s and 1’s.

As a result, I have owned over a dozen different CD players, and extensively demo’d (in my own system) a
dozen others.  Included in this batch were the Levinson 39S, the Cary 306/200, the Electrocompaniet  EC-
1 and several custom-modded DVD players, as well as EAD transports and DACs.  My current front-end is
an Esoteric P-70/D-70 combo, connected by three Transparent Reference AES/EBU digital cables
mounted on a Target VW-2 wall-mounted dual turntable shelf, and powered by way of a dedicated outlet
connected by Silent Source PCs run through a Walker Velocitor.  The D-70’s output is transmitted via
Silent Source Silver Signature interconnects directly to the Electrocompaniet Nemo monoblocks.  Volume
is controlled at the amps’ input by Electronic Visionary Systems Ultimate Nude Attennuators and the amps
are fed by Zcable Cyclones that draw power from 2 separate dedicated 20 amp outlets.  The Nemos drive
B&W 800D’s via Transparent Ultra MM Bicables.

This setup should give you a hint about the kind of music I like to listen to and how loudly I play it.  I regularly
listen to a wide variety of music, with 60% being rock n’ roll, 15% blues, 15% small jazz combos and 10%
classical.  The Silent Source and Zcable components I use are so versatile that they provide body and
tonality for delicate solo voices, violins and pianos, but I won’t buy a component if: a) it doesn’t make rock
come alive at realistic concert levels; b) it’s bass isn’t superb for all kinds of music; c) it doesn’t make
vocals palpable and, d) it isn’t dead quiet.



THE ORACLE APPEARS
 
         
 
 
         
  The CD2500 looks just like the CD 2000 CD Turntable, but is equipped with a DAC and analog outputs.  In
addition, the CD 2500 only has one digital output (BNC), while the CD 2000 is equipped with BNC,
AES/EBU and optical outputs.  You lose the AES/EBU and optical digital outputs to make room for the
single-ended analog outputs.

The drive mechanism is housed in a suspension system, and the control mechanism is located in a
separate housing affixed under the drive unit.  The two pieces are both attached to an acrylic platform and
are connected electrically by 3 wires.  The CD 2500’s suspension system will do any engineer proud.  It
attempts to address vibrations and level balance directly. (The presence of the suspension system
dissuaded me from trying any cones or pucks, but you might find them beneficial.)

The power supply for both units is housed in an entirely separate box and connected via a 15 pin DC cord
that attaches to the back of the control housing.  I am a great believer in separate power supplies.  Every
product that I have tried that separates the power supply from the other circuitry has sounded better than its
one-box siblings.
 
         
 
     
         
  The CD 2500 is a top-loading player.  All you do is remove the aluminum cover and the magnetic disc
clamp, insert the disc, replace the clamp and cover, and start playing.  Removing a CD is equally simple:
remove the aluminum cover and pull out the magnetic clamp.  The disc will come out with the magnetic
clamp, and you disengage it from the clamp after lifting them both out.  This simplicity of operation
nonetheless feels exotic when compared to how most CD players are loaded.

The CD 2500 did not take any effort to set up.  The one I received did not require any calibration and was
ready to go.  I first played it for several days by running the output directly into my amps (my normal way of
listening).  I also played it through the fabulous Sphinx Project Eight Reference Preamp (see
review in
Issue June 2006 of Dagogo).

Of course, when auditioning any audio product, you listen for the usual audiophile qualities, such as pace,
rhythm and timing, dynamics, soundstaging, deep bass and grain-free treble.  However, experience and
knowledgeable audiophiles have taught me to especially listen for four things when auditioning a digital
front end: 1) digital glare; 2) overall perspective, 3) soundstage transparency and 4) sense of space.  They
correctly observed that digital components are often weak in their ability to avoid glare and convey these
qualities.

I selected a variety of music to reflect these qualities.  I won’t list all of the music, but the following were a
few of the selections:
Hell Freezes Over, Eagles (XRCD); Best of Mambo, Perez Prado (XRCD); LA
Woman
, Doors (HDCD); Love Scenes, Diana Krall; Yola, Eleanor McEvoy; Cosmic Thing, B-52’s;
Naked, Talking Heads; The Best That I Could Do, John Mellencamp (HDCD).  Every piece of music that
was played on the Oracle 2500 was also played on my P-70/D-70 combo for comparison.



THE ORACLE SPEAKS
 
         
 
 
         
  This is a great player.  “Duh!” you say, “It better be at $9,380!”  Sorry, but I’ve heard some very expensive
players that were very good, but definitely not great.  This is a great player that will sound great in any high-
end system.  It does everything well: soundstage, sense of space, bass, midrange, absence of glare,
balanced top to bottom tonality and pace, rhythm and timing.  It is one of those players whose price
matches its performance (and you’re buying a piece of art to boot).

The Oracle 2500 is especially a good fit if you thrive on detail.  It will enable you to hear individual notes in
complex passages without destroying the overall “gestalt” of the music being played.  The live portions of
Hell Freezes Over, the tunes on Best of Mambo and “(Nothing But) Flowers” on Naked all illustrate the
benefits of the detail that the Oracle 2500 produces.  You are aware of details that were formerly in the
background, but without being annoyed by them.

The bass performance of the 2500 is excellent.  The detail I referred to above extends to bass notes and
resolves the bass line so that it is readily separated from the sounds of the kick drum.  The electric bass on
LA Woman veritably growls and the acoustic bass in Love Scenes is lively, yet full.  Likewise, the
soundstage covered the entire 26 foot width of my listening room with the Perez Prado Orchestra filling it
completely.

Fast-paced music sounded fast-paced and got my toes tapping.  Intimate recordings felt personal and live,
as though the performers were in the room.
 
         
 
So how does it compare directly to my reference, the $16,000 (not counting $4300 of
digital cables to connect the two) Esoteric P-70/D-70?  I have spent 18 months
tweaking out the P-70/D-70 to suit my personal tastes, so comparing the Oracle
2500 to that combo is brutally unfair, but for readers who want to know the minute
differences between sophisticated high-end players, there are four things I note in
comparing the two front-ends.

First, the Oracle 2500 seems to have a bit more depth than the P-70/D-70, which
actually has very good soundstage depth for a digital component.  This benefited
larger scale music.  Symphonic pieces and big bands had more depth to the back
wall.

Second, the Oracle 2500’s bass did not reach quite as deeply and had a less
weight.  This did not surprise me, since the Esoteric combo produces absolutely
world class bass, and I have not heard any front-end with better bass anywhere.  Don’
t mistake me – if you hear the Oracle 2500 on its own you will swear that it has
wonderful bass.  It’s only after you hear the P-70/D-70 do you realize what edge-of-
the-art bass performance really is.
 
  Third, there were a small number of recordings on which the Oracle 2500’s detail resulted in some slightly
excessive sibilance.  This was only evident on intimately-miked vocals, but you could hear the difference
when the music was played on the P-70/D-70.  I found that the sibilance was ameliorated when I played the
Oracle 2500 through the Sphinx preamp.

Fourth, the P-70/D-70 produces huge amounts of detail, but the CD 2500 is an even more detailed (and
somewhat “airy”) player.  If combined with extremely detailed speakers and/or silver cables, it may on
some recordings feel more detailed than how live performances actually sound in person.  Not bright or
etched – just more detailed than real life.  I found that adding a preamp or changing to cables that have a
full-bodied sound corrected this sensation on those recordings.  Since the vast majority of audiophiles use
preamps, this should not be an issue.

OK – so these are picky things, but if I didn’t point them out, you would accuse me of always giving good
reviews and failing to be sufficiently critical.  Just remember that we’re dealing with an elite class of CD
player here.



THE PROPHESY FULFILLED
 
         
  If you had prophesized that I would really like Oracle’s CD 2500 CD player, you (like the Oracle in Delphi)
would have been right.  I predict that you also will love what the Oracle CD 2500 does.  In addition to being
very musically satisfying, you get a piece of great audio engineering that doubles as sculpture.  Find a
great place to display it, because every visitor will want to know what it is.  They will be attracted by its
stunning appearance.  They will then become fascinated by the exotic mechanical suspension combined
with the simple remove-the-cover operation. Finally,  they will ask you to please play something.  When they
do, I predict that they will become entranced by the music it produces.
 
         
 
 
         
         
         
         
  MANUFACTURE REP’S COMMENTS:

First, I would like to thank you, Constantine, for requesting the Oracle CD2500 for a review subject.  Second, I'd like to
thank Ed Momkus for providing an accurate, detailed description of the CD2500.  Third, I like to applaud Dagogo for the
quality audio medium that the audiophile public needs.

As a rep, I run into many instances where I demo the Oracle Audio Technologies product line to dealers.  As we all
know, Oracle has been producing reference turntables since 1979, which is where most folks remember the Oracle
name.  And time & again, as I present the CD turntables, the remarks are that Oracle continues to make the most
beautiful and sonically detailed players on the market.  My best description of detail is in photographic terms, as in
revealing the shadow detail and exposing the highlights of a fine photograph.

Again, thanks ya'll for the wonderful review.

Rusty Taub
Audiotion
US Representative for Oracle Audio Technologies
 
         
         
         
  Also read Ed Momkus' following reviews:

Electrocompaniet Nemo monoblocks & B&W Nautilus 800D

Genesis G6.1
loudspeaker system

Sphinx Project Eight & Project Eighteen
amplification system
 
         
         
         
 
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©Dagogo 2006