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Std EditionRIAA Phono Preamp 2
License: Public Domain
Description
Its a phono preamp based on the design of rod ellion (sound-au.com) its using a 12-0-12 transformer, 1VA or above it doesnt really matter.
it really sounds great, in a metal box with some highend stickers on it, audiophools wont tell it apart from a 300$ brand product. i used bnc's for connecting a turntable, audio gear should allways use bnc or xlr in my opinion.
Documents
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 1N4448 | D1,D2,D3,D4 | DO-35 | 4 |
| 2 | 1u | C3,C4,C15,C16,C29,C30 | RAD-0.1 | 6 |
| 3 | 100n | C5,C6,C19,C20,C27,C28 | RAD-0.1 | 6 |
| 4 | KA7915A | U2 | TO-220-3_L10.0-W4.5-P2.54-L | 1 |
| 5 | Header-Male-2.54_1x3 | H1 | HDR-TH_3P-P2.54-V | 1 |
| 6 | 100u | C1,C2,C17,C18 | CAP-D6.3XF2.5 | 4 |
| 7 | 1000u | C7,C8,C13,C14 | CAP-D10.0XF5.0 | 4 |
| 8 | 10000u | C9,C10,C11,C12 | CAP-D18.0XF7.5 | 4 |
| 9 | 7815 | U1 | TO-220-3_L10.0-W4.5-P2.54-L | 1 |
| 10 | 204-10SURD/S530-A3 | LED1 | LED-3MM/2.54 | 1 |
| 11 | 1k | R1,R2,R3,R4 | AXIAL-0.3 | 4 |
| 12 | 1.5k | R23 | AXIAL-0.3 | 1 |
| 13 | 0 | R24 | L0805 | 1 |
| 14 | Header-Female-2.54_1x2 | P1,P2,P3,P4 | HDR-1X2/2.54 | 4 |
| 15 | 22u | C22,C24,C25,C26 | CAP-D6.3XF2.5 | 4 |
| 16 | 2.2k | R5,R6 | AXIAL-0.3 | 2 |
| 17 | 47k | R7,R8 | AXIAL-0.3 | 2 |
| 18 | 4.7k | R9,R14 | AXIAL-0.3 | 2 |
| 19 | 180k | R10,R13 | AXIAL-0.3 | 2 |
| 20 | 10k | R11,R12 | AXIAL-0.3 | 2 |
| 21 | 2.7k | R15,R16 | AXIAL-0.3 | 2 |
| 22 | 100k | R17,R18,R21,R22 | AXIAL-0.3 | 4 |
| 23 | 750 | R19,R20 | AXIAL-0.3 | 2 |
| 24 | 22n | C21,C23 | RAD-0.1 | 2 |
| 25 | NE5532P | U3,U4 | DIP-8 | 2 |
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