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© 2018 LydForetaket AS.  Alle rettigheter reservert. Org nr.: 920 898 874

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  • Yamaha A-S1100

    Yamaha A-S1100 er en prisvinnende forsterker som tidligere har blitt kåret til Best i Test og Årets Beste av LYD & BILDE. Den viser tydelig sitt slektskap til den dyrere A-S2100, og med flotte fronter og knapper i børstet metall, samt høyglanslakkerte sidepaneler i tre, har den et luksuriøst uteseende retropreg, som likevel fremstår moderne og tidsriktig. 

     

    Floating and Balanced Power Amplifier with MOSFETs

    The basic design of the power amplifier circuit adopts Yamaha’s own, uniquely developed Floating and Balanced Power Amplifier technology. Adopting output elements with the same polarity on the plus and minus sides of the output stage, and also completely separating the NFB (Negative Feedback) circuit and power supply into total of four plus and minus sides of the left and right channels, results in thoroughly symmetric push-pull operation of the output stage, Completely floating the entire power amplifier circuit from the ground removes any negative impact of minute voltage fluctuations or ground noise. Moreover, the output elements are comprised of MOSFETs, which provide a warm and natural sonic character. The use of MOSFETs, which have the same polarity on the plus and minus sides, further evolves the ideal of a complete symmetrical design, to eliminate sound quality variations due to difference in polarity—a major distinguishing characteristic of the Floating and Balanced Power Amplifier—resulting in sound with a superior signal-tonoise ratio and superbly well-defined sound field.

       

      Dedicated single-ended amplifier for all types of audio sources

      Since this device employs a dedicated singleended amplifier, it provides excellent response in amplification of single-ended analogue sound from all kinds of audio sources, such as CD players of D/A converters—and the A-S1100 takes advantage of this in having been carefully fine-tuned for optimum sound quality. By fully utilising single-ended amplification, the A-S1100 transparently draws out the intrinsic qualities of your favourite audio devices, including those made by other manufacturers.

        All-stage full discrete configuration for strong reproduction of high notes

         

        This amplifier adopts an all-stage fully discrete configuration through all sound circuit stages, using only the most meticulously selected high-precision parts from input to output. (Applicable during tone control circuit defeat.) The slew-rate of the audio signal has been improved to bring lively and strong response to high musical notes. Moreover, the tone control circuit lets you switch to defeat state and enable a full discrete configuration that bypasses the op-amp IC of the internal circuit, simply by setting the BASS/TREBLE knobs to their center points.

         

          Thorough low impedance design ensures powerful bass response with extremely dynamic, energetic feel

          By strengthening the capacity of the high current route (raising the section area of the cable core wire to about 60% of that of the A-S1000) and by pursuing thorough low impedance design, including forming screwclamped wire connections of major ground points, the A-S1100 boasts excellent speaker drive power with a damping factor of more than 250 (8Ω, 1kHz). Along with the large-capacity power source transformer equipped with an EI core, this design delivers bass reproduction that is both strong and uplifting.

            Superior quality electronic volume control for optimum sound

             

            We’ve utilised a high-quality digital volume control specially designed by New Japan Radio Co., Ltd., which consists only of adder-type resistance, removing the impact of slew-rate decline or colouring of the sound, delivering higher purity in the sound, and excellent, fast response to large volume changes and steep transients. Moreover, the tone controls employ a triple-parallel method, minimising the detrimental impact on sound quality seen with straight-line tone controls. In addition, the bass, treble, and common circuits each utilise simple construction in which the NFB of the amp is not used and the CR elements are simply fixed in a straight line, ensuring exceptionally pure sound reproduction even when tone control is applied and superb response to audio signal transients. When tone defeat is applied, straight signal flow from only one volume circuit to a discrete configuration buffer amp is realised.

             

              Large capacity power supply unit delivers energetic, dynamic sound with fast response

              The A-S1100 employs an original EI transformer, carefully customised for optimum compatibility with the chassis. Combining four large capacity carbon sheath block capacitors delivers an energetic sound—even during high volume—that is possible only with the A-S1100. Moreover, since the control amp and control system is equipped with twelve shunt type local regulators that prevent deterioration caused by currency fluctuation, a clean and stable power supply is achieved. The EI transformer is mounted on the chassis using brass washer, restricting internal vibration that would result in noise.

               

                Symmetrical design in pursuit of ideal stereo reproduction

                The left-right symmetrical construction with the power supply in the centre and the power amp blocks on the ends achieves greater separation of the left and right channels—necessary for proper two-channel stereo reproduction—and ideal weight balance. Including fine tuning by a centre frame which extends from the front to the back of the casing and specially made metal legs (selectable from spike or pad), the A-S1100 has superb mechanical rigidity and installation stability that dramatically lessens the impact of external vibrations on sound quality.

                 

                  Discretely configured phono amp

                  The phono amp is comprised of an MC head amp and an equaliser amp, each of which are discretely configured, resulting in a rich sound with pronounced musicality, when playing vinyl records with both MC and MM phono cartridges.

                   

                  De elegante meterne gir et visuelt uttrykk for musikken og er opplyst fra innsiden med et mykt og varmt LED-lys. De kan konfigureres etter smak og kan f.eks. vise peak.

                   

                  Originale høyttalerterminaler er laget av ren messing og designet for å lage en sikker tilkobling som ikke reduserer lydkvaliteten. De er kompatible for bruk med bananplugger. 

                  * Banana-plug compatible speaker terminals are available in some regions.

                     

                     Fjernkontrollen i samme lukuriøse utseende, kan også brukes for å stye CD-S2100.

                     

                    • Floating and Balanced Power Amplifier with MOSFETs
                    • Dedicated single-ended amplifier for all types of audio sources
                    • All-stage full discrete configuration for strong reproduction of high notes
                    • Thorough low impedance design ensures powerful bass response with extremely
                    • Superior quality electronic volume control for optimum sound dynamic, energetic feel
                    • Large capacity power supply unit delivers energetic, dynamic sound with fast response
                    • Symmetrical design in pursuit of ideal stereo reproduction
                    • Discretely configured phono amp
                    • Level meters visually reflect the dynamics in the music
                    • Elegant design with luxurious real wood panels
                    • Original speaker terminals combine ease of use and beauty with high sound quality
                    • Spesifikasjoner

                       

                        A-S1100
                      CD Player
                      Maks Effekt (4 ohms, 1kHz, 0.7% THD, Maks) 160 W + 160 W
                      Høy Dynamisk Effekt/Kanal (8/6/4/2 ohms) 105/135/190/220 W
                      Demping Faktor 250
                      Frekvensgang 5 Hz-100 kHz (+0 dB/-3 dB)
                      Signal/Støy Forhold (CD) 100 dB (S: 200 mV)
                      Inngang Følsomhet (CD) 200mV/47k ohms
                      Mål (B x H x D) 435 x 157 x 463 mm
                      Vekt 23.3 kg
                      Specifications
                      RIAA Equalization Deviation 20 Hz-20 kHz +/-0.5 dB
                      Total Harmonic Distortion (CD to Sp Out, 20 Hz-20 kHz) 0.025%
                    • Størrelse og vekt

                      Bredde 43.5 cm
                      Høyde 15.7 cm
                      Dybde 46.3 cm
                      Vekt 23.3 kg
                    kr14.790,00Pris
                    Velg farge