Uptown  Audio

Jolida vacuum tube amplifiers

Jolida JD102B amplifiers now have a nice transformer cover and are silver and black rather than the old gold tone finish. They have also added a new 12AX7A preamp tube and use separate 12AT7 tubes as drivers for the power section. A nice, compact design that offers clean sound and a cool, retro look for surprisingly not much money!

Model JD 102B

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

14Hz to 80KHz + 3dB; 0dB = 20 W 1KHz, 8 ohms

Distortion THD + N:
Less than 1.5% at 15W output, 39Hz to 10KHz, 8 ohms

Circuit Type:
Ultra Linear, Class AB1

Input Impedance:
= or < 250Kohms

Input Sensitivity:
Max. 900mV 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; 2 pcs. 12AT7 drivers, and 1 Pc.12AX7A pre-amplifier.

Power Requirements:
110V-120 VAC 60Hz 90 watts-standby, 200 watts maximum (220 VAC 50Hz option).

12 inches wide by 8 inches deep by 5 inches high.

18 pounds net, approximately 22 pounds packaged.

One year limited parts and labor.

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