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Hi-Fi Amplifier > U280sc > Margules Audio



U280sc


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Margules Audio






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Margules Audio U280sc photo 1
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Last update: 2008-01-31
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Class-A Output Stage & Active-Servo Bias
Vacuum tube power amps with class-A outputs are rare. Class-A operation causes the tubes to run quite hot, and increases the chance of saturating the output transformer.
Margules has gotten around this problem by incorporating Active Servo Bias (patent pending). The bias actively tracks in input signal, permitting full class-A output, without overdriving the tubes.
Active Servo Bias also sets DC bias and AC drive levels, assuring optimum electrical and sonic performance. Throughout the useful life of the output tubes, no drive or bias adjustments are ever needed. New tubes can be installed without test equipment or a time-consuming setup.
Active Servo Bias also makes it possible to use a variety of output tubes. The 6550, KT88, KT99, or KT100 can be interchanged without modification.
Active Servo Bias is implemented with semiconductors designed for the aerospace industry, assuring long, trouble-free operation.

Ultralinear/Triode & Strapped Operation
Audiophiles have

Specifications > Amplifier > U280sc
ManufacturerMargules Audio
Model nameU280sc
Kind of amplifierPower amplifier
TypeTube
Number of channels2
ClassA
Per channel power output35 Watts
Output impedance4 Ohms
Total Harmonic Distortion (THD)0.15 %
Signal to noise ratio83 dB
Power consumption530 Watts
Frequency responsefrom 20 Hz to 55 kHz
Number of inputs1
Source directYes
BalanceYes
Treble / BassNo
LoudnessNo
Source selectorNo
Standby modeNo
Remote controlNo
Phono inputNo
Available front panel colorsblack
Available front panel materialsacrilic/metal
Weight35 kg
Suggested retail price3500 USD
Product review URLhttp://www.stereotimes.com/amp010308.shtml
Product review URLhttp://www.soundstage.com/revequip/margules_u280sc.htm
Product review URLhttp://www.soundstageav.com/onhifi/20060201.htm
Product review URLhttp://www.audioweb.com/Review/ReviewSearch.asp?searchtype=M&companyid=1143
Manufacturer's product URLhttp://www.margules.com.mx/home.htm
U280sc > Margules Audio

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