JD102B Integrated Stereo Tube Amplifier



Great if you’re looking for your first vacuum tube stereo amplifier. It has a price and sound that competes with solid state. Don’t be fooled by the compact size. The JD102A is a full function tube amplifier that will bring years of smooth silky sound.

Construction Details and Features:
  • Fully Integrated Stereo Amplifier: Input 600mV driving 20 watts, maximum 25 watts output.
  • Multiple Inputs: Tape, tuner, CD and Aux (for Tuner, TV, VCR, Tape Recorder, Computer and etc). Tape out and Preamp out are available on request.
  • Right and Left Stereo Balance Control: + 20dB at both right and left front panel control.
  • Custom Wound Audio Transformers with a core of German grain oriented silicon steel. 15th generation proprietary design. Secondary can be configured for a 4 ohm or 8 ohm load.
  • Top Panel Bias Testing Terminals with Bias Adjustment Controls.
  • State of the Art Components: Blue Alps potentiometer, Gold plated RCA input jacks, gold plated five way speaker connectors.

  • Technical Specifications:
    Maximum power Output: 25 W per channel at 8 ohms, 1KHz
    Rated Output Power: 20 W per channel at 8 ohms, 26Hz to 50KHz
    Frequency Response: (at 1 watt into 8 ohms) 7Hz to 95KHz + 1dB; 0dB at 1KHz
    Bandwidth: 14Hz to 80KHz + 3dB; 0dB = 20 W 1KHz, 8 ohms
    Distortion THD + N: Less than 1% at 20W output, 39Hz to 10KHz, 8 ohms
    Circuit Type: Ultra Linear, Class AB1
    Input Impedance: = or < 250Kohms
    Input Sensitivity: Max. 600mV for 20 watt output at 1KHz
    Output Impedance: 4 ohms and 8 ohms
    Negative Feedback: Less than 7 dB
    Signal & Noise Ratio S/N: 70dB below rated output from 10Hz to 200Khz
    Tube Complement: 2 matched pairs (4) of EL84 power output; 1 pc. 12AX7A pre-amplifier. 2 12AT7 drivers
    Power Requirements: 110V-120 VAC 60Hz 90 watts-standby, 200 watts maximum (220 VAC-50Hz option)
    Dimensions: 12 inches wide by 8 inches deep by 5 inches high
    Weight: 18 pounds net, approximately 22 pounds packaged
    Warranty: One year limited parts and labor