Output GAIN option: you can set it "LOW or HIGH" output
it's support 2 model tube (6N2 / 12AX7): On the PCB there have 3 switch, please note, the switch need turn on the same tube mode.
you can find more replacement tube for it too.for example: 6N2 can be replaced by 6H2,6H2n,
3. This is the newest pure valve phono preamplifier This class A preamplifier provides a beautiful and very warm sound.
4. This is the real HiFi version If you previously owned a turntable -. Now it's time to revisit the classic!
5. Add a acrylic cover in the package, if you want to see the tube warm light, you can change the upper cover by yourself!
And about some buyer respond the hum noise problem.
In normal, there is some low humming noise.not loud. (Because the phono preamp is amplifier the signal to about 800-1000 times, the MM source signal voltage is 3 ~ 5mV, MC source is 0.3 ~ 0.8mV, need amplifier up to 1.2 ~ 2V, (so, if any noise in the signal, it's will be same loud too.)
you can try follow step to be sure is in lowest.
1, Must be sure the the GND point is connect to real earth.you can test it.using your finger touch the GND point. Is the humming noise come to lower? If yes.that's mean the GND cable not in good connect, if the humming noise is same, no change lower.that's good.
2, Using some better audio connect cable, and move this valve preamplifier little far from power or TV or other Electric device.
3, Connect the transformer case box to GND too.
- This is our Douk audio own brand Nobsound, high-quality promised. It's the Little Bear T10 latest upgrated version, with Hi-end Aluminum chassis, basically no background noise. Appearance and performance are very good.
- NOTIC: This preamp is using for MM (Moving-MaganeticCartridge) turntable only.do not support MC truntable, also not support CD or other similar player
- Focus: 1. It's a pure valve phono preamplifier. Sound is warm and classic, clearer and truer sound is restored. 2. Using 45VA customization EI model transformer, with metal cover, low noise. 3. Coupling capacitors all using HiFi WIMA audio capacitor, best model. Very low noise and clear sound output. 4. 3x 6N2 tube (low noise tube) + 1x 6Z4 tube.
- Package included: 1 x Phono preamp 1 x Power cord 1 x Acrylic upper cover