K4040B  STEREO VALVE AMPLIFIER / BLACK VERSION

K4040B  STEREOFONICZNY WZMACNIACZ LAMPOWY / WERSJA CZARNA

For most of us a high power valve amplifier is unaffordable. This kit changes that, so that now everybody can enjoy that sublime "valve sound". The sound of valves has never been surpassed, nor by transistors, nor by FETs. In the course of developing this amplifier, special attention was given to the housing so that the expensive valves are on display in a way that is very pleasing to the eye. The weakest point of an valve amplifier are the output transformers ; that's the reason why we use ultra-linear and over-rated output transformers (toroidal) to guarantee a rich bass response. To extend the life of the precious valves, the amplifier is provided with an switch on delay, so that the high voltage is switched on when the valves are warmed up.

  Features

• pure valve sound with high quality EL34 valves

• high quality black housing

• chrome valve socket covers

• easy bias adjustment with LED indication

• removable bottom for easy access and service

• high quality capacitors and components

• gold plated input and speaker terminals

• standby function

• "Soft start" circuit for power transformer

Specifications:

output power: 2 x 90Wrms music power for loads of 4 or 8 ohm
power bandwidth: 15Hz - 40kHz (-3dB ref. 50W)
frequency range: 8Hz - 80kHz (-3dB ref. 1W)
harmonic distortion: 0.08% (1kHz / 1W) / 0.7% (1kHz / 90W)
signal-to-noise ratio: > 105dB (A-weighted ref. 90W)
channel separation: > 75dB (ref. 90W)
input impedance: 34Kohm
input sensitivity: 1Vrms at 95W
damping factor: > 10 (100Hz)
weight: 17Kg
dimensions:425 x 130 x 350mm (16.7" x 5.1" x 13.8")

Dla większości z nas wzmacniacz lampowy dużej mocy był nieosiągalny. Ten zestaw zmieni to - teraz dla każdego stanie się dostępny "lampowy dźwięk". Brzmienie lamp jest niedoścignione, zarówno przez tranzystory bipolarne, jak i przez FET'y. Przy konstruowaniu tego wzmacniacza szczególną uwagę zwrócono na obudowę, eksponując kosztowne lampy, co daje przyjemne wrażenie. W skład zestawu  wchodzi ultraliniowy transformator wyjściowy (toroidalny)

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