LS-37 bare board
MM/MC RIAA Phono Amp
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-29 assembled and tested LS29 is base on the HI END Audio manufacturers-Music Fidelity’s X CAN series . LS29 is very simple, it is easy to install and cheap, sound and good, you only need to add a 24VAC transformer and then connected the RCA input and output terminals, then it can sing. It can …
LS-24 assembled & tested Each channel using one 5687 in parallel, giving much more current, output can match headphone impedance from 8 ohm to 600 ohm. SCR PP coupling capacitor,metal film and carbon film resistor board size: L 220mm X 155mm. (tubes, case and power transformer are 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 …
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