Features:1. The preamp amplifier board, fever pre amplifier preamp is a kind of music amplifier, which uses a vacuum tube to enhance the amplitude or power of the signal to achieve the effect of amplifying the sound signal2. The preamplifier volume control board, electron valve pre amp tube adopts full bridge rectifier, the four pins of rectifier is respectively in parallel connected with decoupling capacitor, effectively eliminate the high frequency interference of AC power grid3. Volume controls preamp module adopts 8 470UFs capacitor filter which is very clean and can make the sound more clear and translucent; This electronic tube is a very practical stereo preamplifier volume control board4. Preamplifier board is reasonable, low noise, component layout nice5. The pre amp board replacement is divided into unassembled parts, so you can assemble them by yourself and enjoy the process of building your own tube amplifier, suitable for electronics enthusiastsSpecification:Model: 6JL electronic tube bile preamplifier, can replace the tube type 6AK5, 5654, 6AU6Power Input : AC 12V 1A 5.5*2.5 PLUGChannel type: 2.0/stereoKnob Function: power switch / volume adjustmentPower Input: AC AC12V 0.8A / 5.5*2.5 plug power supply or transformer (DC is not supported)Magnification: 0.85 times magnificationSize: 77 * 75 * 52 mm/ 3 * 3 * 2 inPackage Weight: 88 gPackage List:1 * DIY Kit
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