LS-69 bare board
Hybrid tube balance pre-amp using FET input, tube cathode follower output
board size: L230mm W 150mm board thick 2.5mm
LS-69 bare board
Hybrid tube balance pre-amp using FET input, tube cathode follower output
board size: L230mm W 150mm board thick 2.5mm
LS-19 assembled & tested Modiflied from MFA, using 3 pieces of 6922, constant current source in input stage. PP coupling capacitor, metal film and carbon film resistor, board size: L 20mm X W 155mm matching supply LS-DY, LS-65, LS-70, LS-9D (tubes, case and power transformer not included) Available Options: LSDY : (+US$60) Power Transform: Matching …
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-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 …
LS-35 assembled & tested Dual mono design, each set have two pieces of PCB, seperate dual power supply using two pieces of LS-DY, on the preamp section total six 12AX7 is used. PP coupling capacitor,metal film and carbon film resistor board size: L 220mm X W 155mm (tubes, case and power transformer not included)
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