Cyber-100 15 anniversary integrated amplifier

Cyber-100 15 anniversary special edition !

If Opera audio has ever offered a special anniversary line of equipment with a coherent design philosophy, it would be the 15-year-old M100 series push-pull integrated amplifiers. Opera Audio has centered its philosophy on highly over-specified massive output transformers, which are entirely hand-wound at the factory. These transformers are in fact output transformers with a non-symmetry configuration. Power pentodes like the KT88, 6550, 6CA7, KT77 and EL34, are configured to function and sound like single-ended triodes with the advantage of considerably increased output.

The whole M100 series line has been built around this concept. From M100, M100MKII, M100SE, M100plus to the Cyber 100 signature, they were gradually making their mark, slowly improving their design's most glaring faults, one unit at a time, and yet - the critics could not deny the utter musicality and the extraordinary presence.

Stepping into 2008, Opera audio and our satisfied M100 users, including most of our long time distributors, worked together to develop a 15 anniversary amplifier that would completely conform to the special concept of what a push-pull pentode integrated amp should sound like.

The pursuit of the Cyber100-15 anniversary edition is music purity and the most natural reproduction of sound in an affordable integrated amp that can possibly be achieved. This amp has a superb and enchanting midrange, the result of the harmonic balance that Opera Audio has always strived for and possesses an extraordinarily smooth balance throughout the spectrum, providing a stronger impression of live music. The exterior of the previous Cyber 100 signature has been modified with an aluminium top cage, walnut wood deck and a 15 anniversary logo.

Self-biasing KT88/ 6550 works at Class A, UL operation, with a well designed NOS 12BH7 drive stage and a time–proven rectifier circuit consisted of the 5AR4 EH rectifier tubes and Philips electrolytic capacitors (for audio). Every component chosen has been carefully selected for better audio clarity, that even goes for the German made power switch. After all the KT88/6550s aren't triodes but, if properly applied as such in a circuit with 35 push-pull watt output, they can exhibit surprisingly good linearity, steady performance and approaching that of the real thing – something you'd expect from triode units running single-ended and powerful enough as well.
 
RESOURCES
Literature sheet
Review
2008 Spain
 
 
 
 
 
 
 
 
 
 
 

Specification:

Circuit Type Class A, push-pull amplifier
Power Output
35 watt, RMS 1kHz
Input Sensitivity
220mV
Noise and Hum
-90 dB below full output
Frequency Response
(-3dB points at 10 watt) 6Hz-50kHz
Tubes
1 ea - ECC83 Input
2 ea - 12BH7 Driver
2 ea - 5AR4 Rectifier
4 ea - KT88/ 6550 Output
Resistors
1% Metal Film
Input Impedance
100k ohms
Output Impedance
4 , 8 ohms. User selectable
Consumption
290watt
Output Interfaces
1 groups (RCA)
Input Interfaces
5 groups (RCA) 1,2,3,4,5
Overall Negative Feedback
Little (-6dB)
Warm-Up Time
3 Minutes
Dimensions
430 (L) x 380 (W) x 190(H) mm
Weight
25kg (packed)
 
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