Swappable NE5532 Audio Preamp PCB -- 2
Publicada el 2026-07-16
Descripción de la oferta
I want a small, low-noise pre-amplifier built around the NE5532, powered from + - 15v. The board will slot straight into my DIY projects, so please place the op-amp in an 8-pin DIP socket for easy swapping and surround it with proper rail filtering and local decoupling: • bulk filter capacitors on each rail (before and after any regulators you choose) • 100 nF ceramics tight to every NE5532 supply pin I need two input connection styles on the same PCB—standard RCA jacks plus snap-on terminals—so the preamp can drop into other snap-on equipped modules without adapters. Output may remain RCA only. Deliverables • Complete schematic in your preferred CAD package (KiCad, Eagle, or Altium are all fine) • Clean PCB layout and production-ready Gerbers with drill files • BOM with manufacturer part numbers and footprints • Brief design note confirming expected gain, input impedance, and simulated noise/THD figures Keep the signal path short, ground routing solid, and leave enough clearance so hobbyists can hand-solder everything. If anything is unclear, tell me early so we lock the spec before you route the board. Please note the payment for this is very low because there are existing schematics and PCBs available. I just need you redo it for a better design with rail and decoupling caps.
Skills
Fuente original: freelancer