Northbear AC 12V 6J1 Valve Pre-amp Tube PreAmplifier Board Headphone Buffer DIY KIT (DIY Kits)
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<b>[Product Information]</b><br>
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<li>FE-6J1-2 tube fever plate pre-amp is the circuit schematic imitation design team Music fax X-10D, to be rational optimization, more stable performance than the original machine, 10% tube set increase.</li>
<li>This board uses a single 12 V AC input battery, the processing circuit provides 6J1 tube required positive and negative voltage and voltage supply filament voltage.</li>
<li>Energy works: an open tube feeding the filament heating is started, when the impulse from zero-tension start to increase the hot filament tube, etc.also happens to boost boost finish, so this is the same with the 8 * 470 UF capacitor very clean filter, good power supply system will not have a buzzing, the filament is 12 V DC power supply, needs two tube is connected in series with a DC filament filament too in order Reduce noise.</li>
<li>Channel Type: 2.0 / Stereo Power Input: AC12V 1A /5.5*2.1 plug</li>
<li>Knob Functions: power switch / volume control</li>
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