4 pcs Prototype PCB(2 8, 4 6, 5 7, 7 9 cm). 3 pcs PCB DC JackDC-005 5.5 2.1mm. 3 pcs DC JackDC-022 5.5 2.1mm. 2 pcs JRC4558Dual OpAmp IC. 2 pcs LM358Dual OpAmp IC. nF:1nF, 1.5nF, 2.2nF, 3.3nF, 4.7nF, 6.8nF, 10nF, 15nF, 22nF, 47nF, 68nF.
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