Tube amplifier
  Reference50MKII Tube Line Stage pre-amplifier
Mono block power amplifier
 
Preamplifier
 
Power amplifier
Stereo power amplifier
Mono block power amplifier
Cyber800 MKII
Cyber300BPSE
 
Integrated amplifier
M10S
M100 plus
M100S plus
Reference5.5MKII
 
Headphone amplifier
LinearX
Cyber20
 
 
R50MKII is a 20dB gain line stage pre-amplifier using improved SRPP circuit with no global negative feedback.

The capacitors used for signal coupling is the exotic US AuriCap. All connections are point to point wiring using high purity copper hook up wire. The circuit board acts as a support frame for the tubes and other components and actual point to point wirings are done beneath the circuit board.

The power transformer and choke are shielded from the circuit board. A special silicon steel EI type power transformer and choke with good high frequency response is used together with large Solen MKP metallized polypropylene filtering capacitor.
 
Specification
Control Functions: Volume left / right, Input Select, Power On/Off
Harmonic Distorms (for 2V RMS at output): 0.05%(70Hz-7kHz 4:1)
Frequency Response: (at -1dB) 3Hz-150kHz
Input Impedance: 100k ohms
Input Interfaces: 4 groups (RCA)
Output Interfaces: 2 groups (RCA)
Signal/Noise: 90dB
Gain at 1kHz: 20dB
Consumption: 40watt
Negative Feedback: None
Vacuum Tube: 12AU7 x 2 EZ80x1
Dimensions: 440(L) x 320(W) x 120(H) mm
Weight: 12kg
 
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