High-End Reference CD player. What is lost can never be recovered...
This is why the music source is of such big importance. If signals are
lost in the reading process it can never be repaired by a good amplifier
or a loudspeaker. The process of reading a CD seems quite simple at
first, but it requires very precise timing and the weak signal can very
easily be distorted. If you get these factors under control you are well
on your way to a NATURAL and DYNAMIC sounding system. A system that
brings you closer to the performers. The CDP4A is all that. Thanks to
the Hegel CD-Drive mechanism with redesigned servo motors and perfectly
synchronized timing throughout the digital domain.
In a CD player one of the most important parts is the master clock signal. The master clock is controlling the rhythm of the CD player by telling the DAC chip exactly when to convert the audio signal from digital to analog. To have the best possible sound, it is vital to have a master clock that has a very stable clock frequency and lowest possible jitter. Jitter is timing errors in clock generator circuits. A master clock generator should have a very stable time period. If the timing period of the master clock generator is moving back and forth in time this timing error is called jitter. Jitter for a clock generator is measured in pico seconds, and the number of pico seconds of timing jitter is a measure for the quality of the clock generator.
To have the best possible sound, it is best to have a lowest possible jitter value. All Hegel CD players have less than 10 pico seconds of jitter. There are many mechanisms that can generate jitter in a master clock generator: power supply noise, clock oscillator topology, quality of quartz crystal resonator, clock driver circuit and circuit board layout. Most CD players are using a master clock located at the CD servo-decoder board in the CD player. Because the servo-decoder board has got a lot of high- and low frequency noise from the CD servos and the digital CD decoder circuits this is not a good solution. A Master Clock generator on the CD servo-decoder board will have an unstable frequency and high jitter because of the high levels of signal noise and power supply noise on this board.
In addition to having the Master Clock generator on the CD servo-decoder board, many CD players are also using a SPDIF serial digital interface from the CD servo-decoder board to the DAC-board, and this will give decreased sound quality because of digital audio data related jitter. The most expensive CD systems are using a separate Master clock generator that is connected to the CD servo-decoder and to the DAC board. This is an expensive solution, but will always give the best sound. All Hegel CD players are using a very high precision Master clock generator with extremely low jitter, and this Master clock generator is located on the DAC board inside the CD players. This high precision Master clock is distributed directly to the DAC chip and directly to the CD servo-decoder board. In this way the performance of the Hegel master clock generator is equivalent to very expensive CD systems.
Good recordings are best enjoyed naked. The organic sound of Hegel means that all parts of a dynamic recording are reproduced exactly like the original. The quality of the sound coming out of your speakers are only limited by what happened in the recording studio. Nothing added, nothing taken out - no artificial ingredients. Music enjoyed on a Hegel system is the closest you can get to the live studio session. We are proud to present The Hegel Concept - the first music system in the world that utilizes the very latest technology from all related fields, like integrated circuitry, broadcasting technology and telecommunication. More than 10 years of research and development have made it possible to reproduce music in a more natural way than ever before.
Our goal is give music lovers the most natural and engaging listening experience possible. Real life sound from acoustic instruments and voices from known artists were our preferred reference point while developing Hegel, because nothing else would do.
It's a common fact: As a story is told from person to person, details change. Things are added, others lost. At some point, the story has changed. When a music signal is passing through an audio amplifier a similar effect will take place. As the signal is passed from stage to stage within the audio amplifier, the music signal will be changed by every single amplifier stage. When the music signal finally reaches your loudspeakers, the signal is different from the original music signal from the signal source. The Hegel SoundEngine local error cancelling system prevents distortion in the audio amplifier circuit stages, preserving the original details and the dynamic range in the original music signal. The end result is a much cleaner music signal with a larger dynamic range and lower distortion.
The unique and patented Hegel SoundEngine audio technology is combining the advantage of class AB-amplifier and the advantage of class A-amplifiers, without having the draw backs of class A and class AB-amplifier technologies. The SoundEngine Technology will cancel crossover distortion found in all types of class-AB amplifiers. The human ear is very sensitive to high frequency distortion components in the music signal. The Hegel SoundEngine technology will cancel high frequency distortion components found in normal types of audio amplifiers. The Hegel SoundEngine technology is not using any kind of global negative feedback, it is using local and adaptive feed forward technology if there should ever be any need for cancellation of distortion within the audio amplifier stages.
Almost all HiFi CD Players today are using asynchronous upsampling to convert digital audio data to analog audio. Hegel found that using this kind of asynchronous converter technology will convert jitter error into amplitude error, giving less than optimal sound quality. The Hegel CD Players are using a new digital to analog conversion technology called synchronised upsampling. This new technology gives higher resolution and less distortion, giving a high sound quality. The SynchroDAC technology is used together with the Direct MasterClock technology to keep jitter error and digital to analog conversion errors to a minimum. This will give a cleaner sound and a higher resolution than normal CD Player DAC technology.
The syncroDAC converter technology is using true balanced signal processing to preserve highest possible dynamic range and to reduce distortion. Hegel has done a lot of research to be able to design the DAC converter boards in-house to convert the digital audio data into high resolution analog audio from the CDs. To be able to design the CD DAC converter boards in the best possible way requires a lot of deep technical knowledge in the fields of low noise analog electronics, high frequency electronics, signal processing electronics and advanced circuit board layout techniques.
|Specificatii||Alte caracteristici: 24bit 352kHz multilevel DACs with synchronised upsampling
Hegel SuperClock 2 jitter level: Less than 10ps
Analog outputs: RCA Unbalanced and XLR balanced
Digital output: 75 ohm SPDIF RCA connector
Frequency response: Less than +/- 0.1dB deviation 20kHz
Phase response: Linear phase filter
Noise floor: Less than -130dB
Crosstalk: Less than -100dB
Intermodulation: Less than -110dB (19kHz + 20kHz)
Signal level: 2.3V for balanced and unbalanced outputs
Dimensiuni: 8cm x 43cm x 29cm (HxWxD)
Greutate: 10 kg
THD: Less than 0.002%
|Tip player||CD/SACD Player|