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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Visualizzazione post con etichetta WADIA. Mostra tutti i post
Visualizzazione post con etichetta WADIA. Mostra tutti i post

Wadia S7i


The Wadia S7i CD player  DAC / Digital Preamplifie r is the latest generation of our highly acclaimed series of high performance integrated digital audio playback products. Fifteen years ago, Wadia was the first to develop proprietary digital components that blended the functionality of a CD player, digital preamplifier and processor in one product. Today, the S7i platform not only provides reference quality CD playback, but also serves as a flexible and complete digital hub managing and optimizing the performce of today ’s principle digital sources . The S7i combines exceptional disc playback technology, our best integrated decoding computer technology, and digital source management. It is at our - de - force solution for any music lover wanting the very best musical performance, with out the complexity of multiple digital components.

Series 7 is Wadia’s highest designation for integrated digital products. Not surprisingly, the all-new CD transport exemplifies series 7 level playback performance. This exceptional transport was designed in collaboration with the Austrian company Stream Unlimited. Wadia co-engineered many details of this design, including an application-specific servo system optimized for the newest generation of Wadia playback machines. The results exceeded even our own expectations.


Technical Specifications
Transport:  Modified CD and Data Drive
Power Supply:  Dual transformers in internal isolation chamber
Decoding Software:  3 user selectable upsampling algorithms including DigiMaster v2.5
Compatible Formats:  Red Book CD, CD-R, CD-RW, MP3, FLAC and WMA
DAC Sample Rate:  1.4112 MHz
Digital Volume Control Range:  50 dB in one hundred 0.5 dB steps
Maximum Output Voltage:  Can be adjusted via internal switches from 0.3 V to 4.25 V to match system sensitivity
Output Impedance:  Less than 15 Ω
Digital Inputs:
1 USB - The Wadia USB input accepts the following sample rates: 44.1k, 48k and 96k
1 AES/EBU (XLR)
1 SP/DIF (BNC)
1 Plastic Optical (Toslink)
Digital Outputs:
1 Glass Fiber-Optic (ST)
1 AES/EBU (XLR)
1 SP/DIF (BNC)
1 Plastic Optical (Toslink)
Analog Outputs:
1 pair balanced (XLR)
1 pair unbalanced (RCA)
Both can be used simultaneously
Power Consumption:  25 watts
Dimensions (HxWxD):  184 x 432 x 420 mm (7.25 x 17 x 16.5 inch)
Finish Options:  Black or Silver Anodized Aluminum


Wadia 7 Transport


If the essence of music is art, then th eessence of music reproduction is technique. And the quintessence of that technique is Wadia.
As we continue to make pioneering advances in digital reproduction, by applying advanced computer technology and patented programming to leading-edge signal decoding, we place increasingly greater demandads on th eelement of digital technology first in the reproduction chain; the transport.
For, while the New Generation of Wadia Decoding Computers has been engineered to achieve faithful reproduction of the very life of recorded music, the broad symphony of instrumental and vocal nuance, the aural ambience of soundspace, the audibly influential presence of the artists themselves, reproduction comes to naught lest the recorded signal is sent, intact, to these brilliant instruments of sonic  reproduction.


Enter the new generation of Wadia transports - designed, foremost, to ensure absolute mastery of signal recovery in the time domain; the genesis of optimum reproduction.
Wadia's proprietary clocking technology initiates digital timing accuracy at the LSI chip, setting the standard for accurate time-base relationships throughout the chain of digital reproduction equipment.
To isolate signal topology from power-supply generated noise, the Wadia 7 Transport has been engineered with a completely redesigned power supply, housed in its own substantial chassis. A state-of-the-art regulator stage ensures constant voltage sophisticated line filtering delivers a pure AC line feed to two toroidal transformers - the very best of current manufacture as is every component in the Wadia 7.
Enclosure design, too, is an essential element of distortion control and, as a result in a loss of information  which cannot be recreated by improvements later in the system.


Wadia's exclusive rounded-corner design detunes the enclosure from resonant frequencies which would have a negative impact of critical clock and program signals.
As the foundation for fautless signal recovery, the chassis of the Wadia 7, constructed of massive body plates, provides a profoundly stable platform for that most critical of all transport components, the spinning mechanism itself.
To expect near- perfect accuracy from heavy-handed servo-feedback corrections would seem folly. Thus, at the heart of the Wadia 7 Transport is the critically acclaimed P-2S spinning mechanism - an acknow ledged industry standard, utilized outside  the manufacturer's realm only within the Wadia 7.
Its full-size die-cast zinc/bronze disc turntable and stabilizer clamp keeps disc and laser pickup in their precise relative positions. With this dimensional stability and interial damping, servo corrections need only deal with tracking the variable disc rotation speed.
Combine full-disc clamping with a floating suspension system, sophisticated resonance damping design and the use of non-resonant metals - not plastic - throughout its understructure, and the result is a mechanical treatment which has risen to worldwide critical acclaim..

Function selection of the Wadia 7 is equally sophisticated. Sculpteed from a solid block of aluminum, the full-functions remote controller promises a lifetime of faultless service, reducing control intrusions into both cosmetics and mechanical integrity.
It is also your fully remote acces to the Wadia 7's matchless companion in unrivaled digital reproduction, the Wadia 9 Decoding Computer.
Truly, the Wadia 7 Transport brings unerring digital transport to reality, presenting, through Wadia's pioneering use of the Glass Fiber Optical Transmission System, the world's most accurate digital output, and offering for  your audition the essence of the art of music, through the twenty-first centry technique that is Wadia.
The Wadia 7 Transport  feature a complete array of output choices. Un mistakably, our prime choice is Glass Fiber Optics. To maintain compatibility between Wadia transports and all possible subsequent system components, we have included a plastic optics output, a Coax output via BNC, and an output in the AES/EBU  connection system.
Additional user-selected options are adjusted from the real panel of the wadia 7 Transport. Separate adjustments can be made for disc drawer insertion speed and ejection speed, and for display intensity.


Wadia 7 Transport Specifications:
CD Stability:  Vibration-Free Rigid Disc Clamping System (VRDS)
CD Pickup Mechanical:  3-beam, objective lens drive, 780 nm wavelength
2-dimensional parallel drive
Machined Cast-alloy turntable
Precision Servo-sled tracking mechanism
Floating suspension system
Pickup Drive Metod:  Linear motor drive
Disc Diameter:  120mm/80mm
Quality Level:  Level 1, High Accuracy ; EIAJ CP-340 Specification
Four Outputs :
Glass Fiber Optic (850 nm) :  -16dBm
EIAJ Standard Plastic Fiber Optic (665 nm):   -15 to -21 dBm
S/PDIF Coaxial via BNC Connector:  0.5V p-p, 75 Ω
AES/EBU Standard via XLR Connector:  3V p-p, 110 Ω
Power Supply;  2 Toroidal Transformers; 100, 120,2 20, 240 V AC
Enclosure:  Airborne computer quality aluminum plate.
Detuned for Lenz's Law and package parasitic resonances.
Side panel skin effect transitions @ < 20 Hz.
Dimensions: 
Main Unit: 9.625" Wide, 17.875 'I Deep, 6.063" High
Power Supply: 7.375" Wide, 17.875" Deep, 6.063" High
Wright: 
Main Unit : 32 Ibs.
Power Supply :  23 Ibs