• Tube amplifier
      Reference50MKII Tube Line Stage pre-amplifier
     
    Preamplifier
     
    Power amplifier
    Stereo power amplifier
    Mono block power amplifier
    Cyber800 MKII
    Cyber300BPSE
     
    Integrated amplifier
    M100 plus
     
    Headphone amplifier
    LinearQ
     
     
    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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