LS-19 bare board
circuit came from MFA. using three 6922, addiing constant current source at the input stage.
board size: L 220mm X W 155mm
LS-19 bare board
circuit came from MFA. using three 6922, addiing constant current source at the input stage.
board size: L 220mm X W 155mm
LS-26 bare board circuit modify from SL-1, two stages of voltage amplify, 12AU7 used in first stage,second stage is 12AX7 SRPP, output stage use a 6DJ8 as cathode follower. circuit modify from convergent SL-1,have two voltage amplify stage, 12AU7 used in first stage,second stage is 12AX7 SRPP, output stage use a 6DJ8 as a cathode …
GA-31A MM assembled & tested MM RIAA Phono Amp, Voltage amp stage using 4 pieces of 6922/6DJ8, input stage is using LM394. The sound of GA 31 Phono kit is relaxed atmosphere, rich layers; it can be very good with your MM phono. board size: 230mmx155mm (tubes, case and power transformer not included)
LS-22 assembled & tested Circuit modify from Macintosh C-22 line amp section. PP coupling capacitor,metal film and carbon film resistor, board size: L 220mm X W 155mm matching supply LS-DY, LS-65, LS-70, LS-9D (tubes, case and power transformer not included)
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