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.
Duelund silver cable in cotton dielectric
Are Silver Cables Too Bright? What It Says About Your System
Afraid silver cables will sound too bright? Often the cable is just showing you something about the rest of your system. Read more...
Does a Longer Interconnect Cable Sound Better? The Antenna Problem
Does a Longer Interconnect Cable Sound Better? The Antenna Problem
A shorter single-ended interconnect or speaker cable performs better than a longer one because a longer run of unshielded conductor behaves more like an antenna, picking up more radio-frequency and... Read more...
TriCore Speaker Cable
Why We Combine Three Conductor Materials in One Cable
Silver vs copper treats material as a tradeoff you have to accept. The TriCore Ultra doesn't. Here's why three conductors work better than one. Read more...
Why Resolving Systems Reveal Speaker Cable Differences Easier
Why Resolving Systems Reveal Speaker Cable Differences Easier
Ever swapped a cable and heard a real difference, even on a modest system? Trust your ears. Here's the electrical reason why some systems make it easier to notice. Read more...
Pure Line Audio GoldCore 6 NoiseBlock Power Distributor, Soundnews Editor's Choice 2026
The Power Strip That Wasn't Supposed to Matter This Much
Soundnews tested the GoldCore 6 NoiseBlock Power Distributor under monoblock amplifiers pulling 3,500 watts each. No drop in dynamics, and a quieter noise floor anyway. Here's why that's harder to... Read more...
Signal Integrity Explained: From Source to Speaker
Signal Integrity Explained: From Source to Speaker
Signal integrity is not a single component's job. It is maintained, or degraded, at every connection point between source and speaker. This article traces the signal path end to end. Read more...
An interconnext XLR by Pure Line Audio plugged into a DAC
Choosing an Audio Interconnect Cable: DAC, Amplifier and Turntable Guide
Not every interconnect cable operates under the same electrical conditions. This guide explains how to choose the right cable for a DAC, amplifier, preamplifier, or turntable based on signal level,... Read more...
How to Build a Clean Power Setup for a Hi-Fi System: A Practical Guide
How to Build a Clean Power Setup for a Hi-Fi System: A Practical Guide
Most audiophiles invest carefully in components and never address the power infrastructure. This article covers every step of a clean power setup in the correct order, from the circuit to... Read more...
Do Expensive Audio Cables Actually Make a Difference: What the Engineering Says
Do Expensive Audio Cables Actually Make a Difference: What the Engineering Says
Audio cables influence resistance, capacitance, inductance, and noise rejection in measurable ways. This article explains when those differences become audible, how conductor materials and geometry affect system behavior, and why... Read more...
Ground box audio system
Grounding in Audio Systems: What Matters and What Doesn't
Grounding establishes a stable electrical reference in audio systems. This article explains what it does, how ground loops form, and what actually affects noise and stability. Read more...
How Power Delivery Affects the Entire Hi-Fi System: What Actually Matters
How Power Delivery Affects the Entire Hi-Fi System: What Actually Matters
Power is the only element shared by every component in your hi-fi system, yet it's the one most audiophiles never optimize. This article explains how voltage stability, noise propagation, and... Read more...
Power Distribution in Audio Systems: Why Topology Matters More Than Filtering
Power Distribution in Audio Systems: Why Topology Matters More Than Filtering
Power distribution defines how electrical energy is shared between components. This article explains how topology influences noise, stability, and system behavior. Read more...