Phono Preamp
All resistors should be metalfilm min. 0.5W for minimum noise. 1% types should be used for the RIAA filter. The 10nF cap in the RIAA filter (C4) is difficult to get in 1%, so just match two 5-10% caps instead.


Code:  
Part:  
Notes:

R1
47k


R2
1k5


R3
100k
1%

R4
220k
1%

R5
1M
1%

R6
4k7


R7
1k


R8
22k
1%

R9
270k
1%

R10
33k
1%

R11
22k


C1
220nF 400V
Polypropylene, polyester or paper/oil

C2
2.2µF 250V
470nF-1µF is big enough in most cases

C3
330pF
Mica or polypropylene 1%

C4
10nF 400V
Mica or polypropylene 1%

V1
6SL7 or 12SL7


V2
6SN7 or 12SN7



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