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Zähl H1 Review & Measurements
The Zähl H1 is the little brother to the HM1, offering the same fantastic performance, but at a lower price by focusing purely on the amplifier itself.

The Most Important Spec You’re Not Paying Attention To - Output Impedance Explained
Ever wonder why your favorite headphone or IEM sounds bad on some devices? Welcome to the most important spec you're not paying attention to - output impedance.

Chord Alto Review & Measurements - My favourite 'warm' headphone amp
The Chord Alto packs a huge amount of power into a tiny form factor, and offers what could be one of the best presentations of a 'warm' sound.

The Coffee Shop HiFi Setup Challenge!
Which of our lovely reviewers can put together the best (and least conspicuous) headphone setup for getting work done at a coffee shop? Watch to find out!

Buying Guide: Best DACs & Headphone Amps of 2025!
As we head into 2025, join us at The Audio Files as we round up some of the best and most compelling products in audio source gear. No matter if you're looking to spend a few hundred, or thousands for the best you can get, we've got you covered!

What does an amplifier actually do?
What is an amplifier, why do you need one? And what do they even do?

A tube amp in your pocket! - Woo Tube Mini Review
The Woo Tube Mini might just be the smallest tube amp available, and GoldenSound gives it the full run-down.

What is a DAC and why do you need one?
What is a Digital to Analog Converter, and why do you need one? And how do they even work?

A headphone reviewer's reference gear
Ever wonder what headphones reviewers actually use on a daily basis? In this video, Resolve goes through a list of his reference equipment.