6J9 Tube USB Decoding Ear Daring Preamp Machine HIFI Audio Amplifier Preamplifier

6J9 Tube USB Decoding Ear Daring Preamp Machine HIFI Audio Amplifier Preamplifier Image 1
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6J9 Tube USB Decoding Ear Daring Preamp Machine HIFI Audio Amplifier Preamplifier Image 4
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6J9 Tube USB Decoding Ear Daring Preamp Machine HIFI Audio Amplifier Preamplifier

Regular price $492.99 Sale price $87.99 Save $405
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Brand: JustgreenBox

Description:
Features:
The original 6J9 tube is used, and the USB decoding uses PCM2706.
The main filter capacitor adopts the original imported electrolytic capacitor, and the coupling capacitor adopts the imported Weimar capacitor 3.9UF.
The resistance uses five-ring 1% metal resistance to ensure a good signal-to-noise ratio of the whole machine.
PCB adopts a 1.6mm thick double-sided board, 2.0 oz copper thickness, and a full tinning process to ensure the good passing performance of large and small currents. First-class PCB quality.
The input and output adopt a gold-plated RCA lotus seat, which is durable and beautiful.
This board has reasonable wiring, a beautiful appearance and low current noise.
Power supply:DC12V2A (direct current);
Net weight:0.2KG;
Size:length 120width 74.5height 34MM (excluding tube height);

Tips:
1. This finished machine is a pre-amplifier, not a power amplifier, it should be used with a post-amp or active speaker. Dont directly connect passive speakers, speakers, earphones as power amplifiers; it cant be used in cars, because the cars voltage is unstable and it will burn out.
2. In general, poor audio cables or power supply filters have a very high probability of causing noise at the bottom of the current. It is recommended to use a good audio cable or power supply.
3. Make sure that there is no problem with your sound source. The preamplifier itself has a preamplifier function. If the sound source itself is noisy, the preamplifier will only amplify the noise. Please use a good sound source to test.
4. Check whether the electron tube is properly inserted into the base, please insert the electron tube into the base, and be sure to insert the electron tube properly when the power is off.

Package Included:
1 x Amplifier
Product Attributes:
  • Weight (lbs.): 0.44 lb
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