YBA Signature 4 chassis

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Descrizione

the YBA 1 amplifier circuit has a unique simplicity and effectiveness ; the current state of our knowledge permits no improvement. Because the signal in this circuit does not traverse any passive components, but only transistors, Yves-Bernard ANDRE has, for the YBA Signature line, improved the characteristics of the transistors of the YBA 1 amplifier, which produces, among other things, an increase of the second break-down voltage
floating ground power supplies without any current flowing in the grounds
power supplies optimized by the use of double C transformers which permit the best impulse response and eliminate the greatest part of line noise
highly stabilized and filtered power supplies, which permits a disconnected equipment to continue functioning for several seconds
perfect heat transfer from the transistors to the heat sinks by special mounting without the mica and insulation usually employed. This significantly reduces thermal distorsion (a characteristic not measured in the usual tests)
exceptionally large available current : up to 120 Amperes per channel
use of custom-made YBA resistors (1W 1% metal film), YBA capacitors (polypropylene and copper), transistors and gold-plated non-magnetic connectors (patented)
two outputs per channel, with the possibility of varying the damping factor on one output

The YBA Signature 4 chassis amplifier attains the height of musical neutrality and transparency.
It is now recognized as the reference for amplification.

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Scheda Tecnica

Power output :
100 W / 8 Ohms (230 V line power)
200 W / 4 Ohms (230 V line power)
2 kW / 0,7 Ohms (peak)
Signal to noise ratio (unweighted) :
> 100 dB
Frequency response :
from 5 Hz to 80 kHz at -3dB
Input sensitivity :
1,1 V at P max
Distorsion :
< 0,09% from 20 Hz to 20 kHz
Consumption :
quiescent : 100 VA
at P max (both channels driven) : up to 2, 600 VA depending upon the model
Damping factor :
> 800 at 100 Hz, adjustable
Input impedance :
27 k Ohms
Rise time :
3 µs at 10 kHz
Available versions :
stereo, mono (2 chassis), 4 chassis
Dimensions :
1, 2 or 4 chassis of 430 x 330 x 132 mm
Weight :
24, 48 or 100 kg
Warranty :
10 years