JD-9 II

About the JD-9 II

The Jolida JD-9 II (JD9 Mk II) is a tube-based MM/MC phono preamplifier with extensive gain and loading flexibility aimed at accommodating a wide range of cartridges. It uses two 12AX7 tubes in the output stage, making it suitable for tube rolling to tailor the sound character. Gain and loading are selectable via rear-panel DIP switches, providing settings for MM (70 dB, 5 mV), MC High (85 dB, 0.5-1.5 mV), and MC Low (95 dB, 0.25-0.5 mV), along with multiple input resistance options (100 ohm, 300 ohm, 1 kohm, 47 kohm) and input capacitance settings (47, 100, 150, 220 pF) for precise cartridge matching. The JD-9 II offers two pairs of RCA outputs, a lower-level output intended for use with high-sensitivity preamps and a higher-level output (~1.8 V) suited to typical integrated or preamplifiers, giving flexibility in system integration. Published specifications include frequency response 5 Hz-110 kHz (+/-1 dB), signal-to-noise ratio >100 dB, THD <0.02%, input impedance 100 kohm, and output impedance 600 ohm, with dimensions around 17" W x 13" D x 2" H and weight about 10 lb. Retail listings indicate it is supplied with two Tung-Sol 12AX7 tubes, power cable, manual, and factory packaging. The model is generally regarded as offering strong performance and value for the price, and is widely described as an outdated/out-of-production but still sought-after tube phono stage among vinyl enthusiasts.