I will design multichannel audio mixer dsp and amplifier pcbs electronics

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Tjjohn
design multichannel audio mixer dsp and amplifier pcbs electronics
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design multichannel audio mixer dsp and amplifier pcbs electronics
Full Screen
design multichannel audio mixer dsp and amplifier pcbs electronicsdesign multichannel audio mixer dsp and amplifier pcbs electronics

About this gig

Are you tired of audio hardware suffering from ground loops, high THD+N, crosstalk, and annoying background hum? Generic PCB routing ruins high-fidelity sound.


I specialize in engineering professional, production-ready audio electronics that deliver immaculate signal integrity, ultra-low distortion, and pristine dynamic range. Whether you are building a boutique analog mixing console, a multi-channel SigmaDSP processing board, or an efficient high-power Class-D/AB amplifier, I transform your schematics and ideas into flawless manufacturing packages.


Core Capabilities & Expertise:

Multichannel Mixers: Balanced/unbalanced inputs, low-noise preamps, active summing nodes, and matrix routing.

DSP Integration: Analog Devices SigmaDSP (ADAU1701/1452/1467), XMOS USB interfaces, and low-jitter master clock layouts.

Amplifiers & Converters: Class-D/AB amps, headphone drivers, and AKM/ESS DAC/ADC stages.

Grounding & Power: Strict AGND/DGND/PGND isolation, star grounding, and ultra-low-ripple LDO/SMPS power supply design.


Complete Deliverables Package:

Schematic capture & multi-layer PCB layout (KiCad / Altium)

Production Gerber files, NC Drill, & ODB++


  • Field of expertise

    • Consumer Electronics
    • IoT
    • Lighting

  • Design software

    • AutoCAD
    • Fusion 360
    • Revit
    • FreeCAD
Delivery style preference

Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.

Get to know Tjjohn

Tjjohn

Senior Audio, PCB Hardware Electronics Engineer

  • FromUnited Kingdom
  • Member sinceOct 2026

  • Languages

    English
Need high-fidelity audio hardware? Generic PCB designs cause hum, crosstalk, and ground loops. I design productionready multichannel mixers, DSP units, and power amplifiers optimized for ultralow noise and minimal THD+N. Capabilities: • SigmaDSP (ADAU1701/1452), XMOS, AKM/ESS DACs & ADCs • Class-D & Class-AB amps, low-noise preamps, active EQ • AGND/DGND/PGND isolation & star grounding • KiCad & Altium multilayer layouts Deliverables: • Schematics, Gerbers, NC Drill • BOM with Mouser/LCSC parts • CPL & 3D STEP files for assembly (JLCPCB/PCBWay) Message me first with your block diagram to start

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