I will design custom audio amplifier pcb, circuit, pcb layout and emi filtering
Electronics engineer and firmware development
About this Gig
Want an audio amplifier that sounds clean and passes EMI testing? I design custom amplifier PCBs with a focus on low noise, low distortion and solid EMC performance.
Whats included:
- Circuit design: Class D, Class AB, headphone and preamp stages
- Schematic with calculated component values
- PCB layout with star grounding, short return paths and proper decoupling
- EMI filtering: LC output filters, ferrite beads, input RF filters, power-line filtering
- Gerber, BOM and assembly files
- Source files in Altium, KiCad or Eagle
Perfect for: Bluetooth speakers, hi-fi amps, guitar and bass amps, car audio, PA systems, and embedded audio products.
I design for audio quality (low THD+N, good SNR) and for cutting radiated and conducted emissions, so you avoid costly redesigns at the test lab.
Tell me your power output, load impedance and supply voltage before ordering, and I'll suggest the best approach.
File format:
Gerber
•
STEP
•
VRML
•
SCH
•
Software:
Altium Designer
•
Eagle CAD
•
EasyEDA
•
Fusion 360
•
KiCad
Interface:
HDMI
•
I2S
•
UART
•
SPI
•
SDIO
•
Wi-Fi
•
BT
•
LTE
•
NB-IoT
•
Ethernet
FAQ
Class D or Class AB?
I’ll recommend based on your efficiency, size and sound goals.
Can you fix noise or EMI on my existing board?
Yes, message me for a review gig.
Do you provide EMC lab testing?
No. I design and give pre-compliance guidance only.
Do you do Bluetooth/DSP audio?
Yes, with modules like QCC and ESP32 or with I2S DACs.

