DC5V 7V 9V 12V 15V 16V 18V 24V For choose. High speed low resistance HIFI electrolytic capacitor. Very low noise TL431 with excellent performance. Output DC cable plug type: default 5.5 2.5mm (Polarity: Internal + / outside - ) （ pin 1 + / pin 2 - ）.
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(Made of Swiss SCHURTER fuse, made of silver solder. Use all aluminum chassis. we also can provide 5.5 2.1mm or other size) NOTE: The AC input cable is not included by default.
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Use double 6Z4 tube rectifier bridge. Assembled board for reference：. Use of FET combined with regulator.
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With standard stereo RCA audio input, perfectly compatible with many audio devices such as phone,TV, MP3 players, CD players, DAC, computers etc.. With built-in preamplification circuit, can match well with audio source that with low signal output. Adopting classical TPA3116 amp IC, class D amplification, the max output power can reach 50W+50W(4Ω load), easily to drive all home bookshelf/ computer/ desktop/outdoor passive speakers and match perfectly with them.
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PCB size:159 x 60mm. the price is for 1 pcs bare pcb ，not included any parts ！. Assembled board ，just for reference：.
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Use double 6Z4 tube rectifier bridge. 6z4 tube x2. Use of FET combined with regulator. install 200R+820R get DC6.3V.
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Tube model：6X5 1 + ECL82 1 +0B2 1. Assembled Board:have solder it well ,Not included all tubes !
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With independent treble / bass / volume control, you can easily adjust music style that you want. Adopt 2PCS classic TPA3116 chip and offer 100W*2 stronger power, best for bookshelf / computer / desktop speakers, can use Phone/ MP3 player/ DC/ TV/ Echo Dot as input. Super mini size and Simple compact design but practical and powerful.
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