YAMAHA A-S1100 MUSTA INTEGROITU VAHVISTIN

TUOTEKUVAUS

Täydellinen perintö Yamahan emotionaalisen ja dynaamisen soundin ylivoimaisista ominaisuuksista. Yksilöllinen, korkealaatuinen integroitu vahvistinrakenne, joka tuo uskollisesti suosikkisoittimesi tai D-/A-muuntimesi arvot esiin.

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.

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.
 
  A-S1100
Specifications
Maximum Power (4 ohms, 1kHz, 0.7% THD, for Europe) 160 W + 160 W
High Dynamic Power/Channel (8/6/4/2 ohms) 105/135/190/220 W
Damping Factor 250
Frequency Response 5 Hz-100 kHz (+0 dB/-3 dB)
RIAA Equalization Deviation 20 Hz-20 kHz +/-0.5 dB
Total Harmonic Distortion (CD to Sp Out, 20 Hz-20 kHz) 0.025%
Signal-to-Noise Ratio (CD) 100 dB (S: 200 mV)
Input Sensitivity (CD) 200mV/47k ohms
Mitat (L x K x S) 435 x 157 x 463 mm
Paino 23.3 kg

valmistajan sivut

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Matti Kettunen
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