Headphone Amplifier Design | NE5532, KiCAD, Baxandall Volume Control - Phil's Lab #24
Massively parallel NE5532 op-amp (44 in total!) low-noise, low-distortion headphone amplifier design (single DC rail). Going through all design considerations from power supply, input buffers, voltage amplification stage (using Baxandall volume control), through to output section.
Chapters:
- 00:00Intro
- 01:09Overview
- 01:43Block Diagram
- 02:44Core Design Principles
- 03:24Spice Simulation Results
- 04:18JLCPCB and My Website
- 04:48Power Supply (LM317, Bias Generators, Single-Rail)
- 07:02Input Buffer (Filters, Parallel Op-Amps, Biasing)
- 08:30Voltage Amplification Stage (Baxandall Volume Control)
- 13:21Output Stage (Massively Parallel Op-Amps)
- 14:57PCB (KiCAD)
- 15:50Enclosure
- 16:41Douglas Self NE5532 OpAmplifier and Small-Signal Book
