 
Consonance Cyber-20 is the first high-end vacuum tube headphone amplifier
produced by Opera Audio. It uses two EL84 connected in triode mode single
end operation being driven by a single 12AU7. A separate power supply using
LC filtering is being used. All connections are by point-to-point wiring.
Worth mentioning is, Cyber-20 is the first vacuum tube headphone amplifier
in China that uses an output transformer. The selectable output impedance of
the output transformer is done by a switch at the front panel. With this
switch the amplifier can adapt to headphone having impedance ranging from 10
to 600 ohm. This enable high-end headphone user to have a choice over many
different headphone in the market. Dual headphone output makes it easy for
two person to enjoy the music together under the same conditions for easy
comparison. The top of Cyber-20 is covered with African solid rose wood.
With its cute outlook and small size, an ideal compliment to its warm,
transparent and powerful musical performance.
SPECIFICATION:
CONTROL FUNCTIONS: output high-low
impedance selecting, Power on/off,
Input level min/max
Output Power :1W x 2
Frequency responsible at 1 W: 20Hz -41KHz
Distortion at 1W: < 0.4%
S/N Ratio with A weighting :95db
Input
sensitivity:0.9V
Input impedance :50K
Output Impedance: HIGH - LOW (10 Ohm - 600 Ohm)
Consumption:
26W
Input Sockets: RCA Gold Plate
Output Terminal: 6.5mm Mic Jack x 2
Tube: EL84 x 2,12Au7 x 1
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