$3.00
Two single SMT Op-Amp to Dual Op-Amp 8-pin DIP Adapter
LS-12 bareboard use two 12AT7 for voltage amplify, very simply circuit, double side gold plated PCB board size: L 220mm X W 155mm matching supply LS-DY, LS-65, LS-70, LS-9D
LS-31 assembled & tested Circuit using famous 5842, 6E2 tuning indicator, very simple design. PP coupling capacitor,metal film and carbon film resistor, board size: L 220mm X 155mm (tubes, case and power transformer not included)
LS-22 bare board Base on famous Macintosh C-22 line amp board size: L 220mm X W 155mm
LS-25 assembled & tested Circuit modified from Matisse, using 4 pcs of 12AT7, with regulator on board . PP coupling capacitor,metal film and carbon film resistor board size: L 310mm X W 190mm (tubes, case and power transformer not included)
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