help needed on spec of cdp please?
Nov 8, 2009 at 2:53 AM Thread Starter Post #1 of 5

harj

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hi,

could someone please tell me how good the spec of this cd player is? I cant seem to find much reviews on te web for it. Thanks in advance for taking time to read this.

info below is copied from web site.

Orelle CD100 evo

"Orelle has elevated CD reproduction to new heights - the effect is that recorded music sounds more live, more real. It simply extracts more useful information from the CD than ever before.

The CD100evo sets a new CD standard, demonstrating clarity and detail previously unknown from CDs while preserving an intense sense of rhythm and timing. The machine has a unique ability to reconstruct a musical experience: exciting and dynamic with structure and form in both time and space. It is also exceptionally coherent and transparent with a sense of musical poise that is able to transmit the musician’s art. The CD100evo pushes the level of subtlety close to the edge of what CD will ever give; clarity and staging are enhanced to a level of unexpected size and solidity. It is totally exceptional at revealing nuances, dynamic impact and a micro dynamic structure that translates the swell and fall that makes music sound like music!


24bit digital interpolation filter
120dB dynamic range
Twin multi-bit DACs
Class A discrete analogue stage
Discrete Class A regulators
Discrete I/V converter
Passive LC filtering
Display off
CD-R & CD-RW playback
Full Remote control
Optical & Co-axial digital o/p option
Dual transformers
Optimised signal path

The Orelle CD100evo redefines the reference point for musical reproduction from the CD format combined with superb consistency and reliability. It is able to create a sense of involvement in music that was previously only available from the very best analogue sources.

Why a CD player?
With the advent of SACD and DVD audio potentially offering greater fidelity than CD players, why has Orelle produced a new CD player? At Orelle we assess all technologies and we have our own SACD players but we do have a problem with SACD – the software is very limited and most of what is available is transfers of old material recorded in the 70’s and 80’s. We all have CDs and some of us have large CD collections – even if we want to replace them the option simply isn’t open to us now. We know that SACD players can play CD but they aren’t optimised for CD replay and to us the resulting performance is unsatisfactory. We will continue to research new technologies and bring out products when the time is right. Meanwhile, our research on the latest CD replay technology produced the opportunity to make an exceptional player, so we did. Now you will be able to listen to you CD collection in a new light – CDs can provide truly excellent reproduction.

Evolution
Its been 11 years since Orelle amazed Hi-Fi enthusiasts by demonstrating that CD could deliver such a high level of performance in the guise of the CD160. A series of players followed as the technology available to us improved. The first CD100 was a resounding success, winning awards and many accolades from the Hi-Fi press and public alike.

The CD100evo is an evolution of that player and new discoveries have allowed it to evolve into a totally new species of super fidelity player. Innovative techniques combined with the experience gained with the original CD100 have reaped huge performance rewards. Every aspect of both the electronic and mechanical design has been further developed to produce a completely new listening experience. Every part has been carefully chosen to create a symbiotic relationship within the CD player to realise the desired effect. As designers we knew exactly what we wanted the player to do and we developed it until that performance was actually reached.

CATS – Critical Acoustic Tune System
The CD100evo case is formed using immensely strong extruded Aluminium side panels in conjunction with a light Aluminium alloy chassis in a way specifically designed to channel and dissipate energy in a benign way. The result is a cleaner, sharper and faster sound. In addition, the non-magnetic casing further improves the audio performance because it has minimal interaction though electromagnetic (EM) coupling with the PCB and transformer whilst providing a good radio frequency (RF) shield.

Single Ended Class “A” discrete transistor circuitry using balanced split rail supplies under DC servo control allows the output to be DC coupled. This delivers huge gains in low-level detail and bass precision. Because this CD player has a DC coupled output stage is constantly monitored for DC at the output to ensure that the rest of the system has long and trouble free life.

The CD Transport and operating system
The CD100evo uses the latest generation Philips CD10 chipset with the high quality hall motor disc drive VAM1250 mechanism. We use a high quality low jitter master clock and control software specific to Orelle. There is a display off feature to further enhance performance by removing the noise generated by the display – it is set to come on for a few seconds whenever a remote control is used.

Multi-bit Conversion
All Orelle CD players have used multi bit DACs and the CD100evo is no exception. It incorporates the latest technology, advanced, high performance 24-bit interpolating linear phase digital filter that drives separate mono multi-bit DACs (one per channel) to ensure a dynamic range of 120dB, ultra high resolution, and a stop band attenuation exceeding 116dB. The best Delta Sigma converters have truly excellent technical specification and are cheap to produce often incorporating a digital filter and an output amplifier. Multi-bit DACs can also have excellent technical specification but are expensive to produce and tend to be “stand alone” products. We specifically like multi-bit DACs because the sound they produce is more faithful to music reproduction than the, now almost universally used, Delta Sigma conversion. The DACs we use have a current rather than a voltage output which allows the important transition to the voltage amplifier to be completely controlled and we have been able to dispense with the normal chain of feedback operational amplifiers for current to voltage conversion and filtering. Instead, we use a highly developed discrete Class A transistor circuit with passive LC filters. The resulting system has excellent gain linearity and low distortion without using the standard technique which requires lots of negative feedback which, while effective at reducing distortion and certain types of noise, has a set of problem all of its own and, in our opinion, problems that manifest themselves ultimately in reduced audio fidelity.

The Power Supply
A special transformer was developed for the analogue and digital audio section to ensure that the exceptionally transparent circuitry had sufficiently pure power to deliver to its potential. This was coupled via an ultra fast diode bridge to capacitors made especially for Orelle to allow the maximum performance to be extracted from analogue section. The digital audio section and CD servos are supplied from a similarly highly developed supply incorporating the latest technology high frequency low ESR supply capacitors. The zero feedback zener referenced regulated supplies ensure natural dynamics and no “time smear” or “energy peaking” that is so prevalent in so many hi-fi products designed using classic “text book” feed back principles.

The microprocessor that runs the CD player is fed from an entirely separate supply with its own transformer and we even use the high frequency supply capacitors here as well because it makes a difference and enhances performance.

DBZ (discrete balanced zener regulator)
Every analogue stage (including the analogue supply to the DACs) uses our specially developed discrete balanced zener referenced transistor regulators designed to control voltage accurately without using negative feedback techniques. These regulators provide low noise and good ripple rejection while maintaining a Class A power supply for a totally natural unforced sound, previously unavailable at any price.

Some other design criteria
All the critical components are designed to be in close proximity to keep path lengths short, which ensures the ultimate fidelity of the delicate signals. Every stage of the circuitry is powered by separate regulated supplies, which are arranged in series to reduce noise still further, for the most important stages. The earth system adopted is of particular importance to ensure ultimate performance and extensive care has been exerted here. As standard there is no digital output because no matter how hard we tried it created extra noise and reduced fidelity. (One is available as an optional extra) and no headphone output is available on this model because adding a headphone amplifier has several adverse effects. It is another load on the power supply and if feeds further noise into the CD players delicately optimised ground system.
Frequency response:
10Hz - 20kHz + 0.1dB - 0.5 dB
Output level:
2.2V RMS at 1kHz
Output impedance:
680 Ohms
Phase response:
Linear phase, absolute phase correct
Laser type:
Semiconductor AIGaAs
Wavelength:
780nm ± 20nm
Light output (cw):
Maximum 0.5mW
De-emphasis:
± 0.1 dB referred to main response
THD+N:
<0.1% 10 Hz - 20 kHz at full level
Mains supply:
~230V or ~110V
50/60Hz-factory set
Dimensions (WxHxD):
440x70x358mm
Weight (gross):
7 kg
Finish:
Silver
"
 
Nov 9, 2009 at 10:19 PM Post #3 of 5
I think one of the reasons you've had no response in this forum is that it is very hard to tell how anything will sound just on specs alone. A lot of the specs quoted are meaningless (in terms of sound), like the dimensions/weight and some of the details given are pure marketing:

Quote:

Originally Posted by harj /img/forum/go_quote.gif
CATS – Critical Acoustic Tune System
The CD100evo case is formed using immensely strong extruded Aluminium side panels in conjunction with a light Aluminium alloy chassis in a way specifically designed to channel and dissipate energy in a benign way. The result is a cleaner, sharper and faster sound. In addition, the non-magnetic casing further improves the audio performance because it has minimal interaction though electromagnetic (EM) coupling with the PCB and transformer whilst providing a good radio frequency (RF) shield.



Sounds like they've put it in an aluminium box to me.

The spec reads well enough though: Class A output; frequency response sounds as if it should be pretty flat... but these are pretty standard for digital sources

The problem is there is no perfect solution to designing anything and spec only tells you so much. Naim gear doesn't measure as well as some cheaper equipment but a lot of people swear by it. All designs will have some shortfall somewhere and what really matters is how the designers work with those to produce the final product. Well, that and how it sounds to you with the rest of your gear.
 
Nov 10, 2009 at 11:40 AM Post #5 of 5
Quote:

Originally Posted by iriverdude /img/forum/go_quote.gif
A £30 DVD player and a £5000 CD player probably measure within 0.001% between each other. Doesn't mean they both sound the same.


Exactly. If I could only learn to be more concise and not ramble on as mu...
 

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