Engineering Notes

A collection of technical insights, material research, and design principles behind Pure Line Audio products — written for listeners who care about signal integrity, not marketing claims.
Power distributor and power cable hi-fi
Power Cables Explained: What They Do (and What They Don’t)
Power cables define how real-world AC disturbances interact with audio power supplies. This article explains what power cables do, what they do not do, and why stability, geometry, and noise... Read more...
Signal Noise Explained: What It Is, Where It Comes From, and Why It Matters
Signal Noise Explained: What It Is, Where It Comes From, and Why It Matters
Signal noise is electrical energy created by interactions between components, conductors, and reference points. It can exist below audibility while still affecting timing, dynamics, and spatial information. Understanding noise means... Read more...
Cable Geometry Explained: Why Structure Matters as Much as Materials
Cable Geometry Explained: Why Structure Matters as Much as Materials
Materials matter, but geometry determines electrical behavior. A practical explanation of how spacing, twisting, grounding, and stability shape performance in high-end audio cables.   Read more...
What Is Graphene and Why It’s Transforming High-End Audio Cables
What Is Graphene and Why It’s Transforming High-End Audio Cables
Graphene is an advanced conductive material used to manage noise and energy behavior in audio cables. This article explains what graphene is and how it interacts with copper and silver... Read more...
Cable Conductivity Explained: Why Silver and Copper Are the Foundation of High-End Audio
Cable Conductivity Explained: Why Silver and Copper Are the Foundation of High-End Audio
Silver and copper audio cables differ not by hierarchy, but by electrical behavior. Conductivity alone does not determine performance. Material choice affects detail, stability, and system balance, and must be... Read more...