Speaker Sensitivity, Room Size, and Amplifier Power Guide
Learn how speaker sensitivity and distance attenuation determine sound pressure, and how to match amplifier power and damping control to your room.
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Why a Phono Equalizer Is Needed: RIAA Curve and Gain
Why vinyl records require a phono equalizer: the physics of the RIAA equalization curve (3180, 318, and 75 us time constants) and MM/MC gain stages.
Record Stylus Lifespan & Tracking Force Guide by Tip Shape
Compare official stylus replacement hours and tracking force specs for Audio-Technica, Ortofon, Nagaoka, and JICO, and see why light force ruins vinyl.
Hi-Res Audio vs CD: Sampling Theorem and Audible Limits
Discover what changes between CD and 96kHz/24-bit hi-res audio through the Nyquist-Shannon sampling theorem, DAC filter headroom, and 144dB dynamic range.
Loudness Normalization: Each Streaming Service’s Published Values Side by Side
We checked the loudness reference values written in the official help of the major music streaming services, and lay out how volume normalization works, from Spotify's -14 LUFS and its three levels to Apple Music's Soun…
Output Impedance and Damping Factor for Headphones
Why amplifier output impedance matters for low-impedance IEMs, with calculated dB attenuation and frequency response swings across 16 to 600 ohm loads.
How Eartips Change Sound: Seal, Depth, and Canal Resonance
Why eartips change earphone sound: how acoustic seal governs bass, how insertion depth shifts ear canal quarter-wave resonance, and the order to test.
Do You Need a DAC or Amp? Calculating Headphone Voltage
How to calculate the exact voltage your headphones need to reach 100 dB SPL from sensitivity and impedance specs before buying an external DAC or amp.
Desktop Compact Speaker Setup: Four Nearfield Steps
How nearfield desktop speaker placement reduces room reflections at zero cost through equilateral geometry, ear-level tweeter height, and isolation.
Getting Started with Vinyl: 3 Essentials and Placement
A practical guide to your first vinyl setup: how the turntable, phono preamp, and output stage fit together, plus three zero-cost placement checks.