Hi-Fi Myths and What Actually Matters

Hi-fi is unusually prone to folklore. The effects being discussed are real but often small, listening is subjective and easily influenced, and there is a large industry with an interest in keeping certain beliefs alive. The result is a body of received wisdom in which genuinely important ideas sit right next to claims that fall apart the moment anyone measures them. This guide works through the ones you are most likely to encounter early on. The aim is not cynicism — several of these have a kernel of truth worth keeping — but proportion: knowing which claims deserve your attention and, more usefully, which deserve your money.

Myth: More Watts Means More Volume

Power ratings are the most misread number in audio. Loudness does not scale linearly with watts — it scales with the logarithm of power. Doubling amplifier power buys you 3 dB, which is a modest step, roughly the smallest change most listeners describe as clearly louder. Going from 50 W to 100 W is the same 3 dB as going from 200 W to 400 W.

Speaker sensitivity, by contrast, is a direct trade. A speaker rated 90 dB/W/m needs half the power of an 87 dB one for the same level, and a quarter of a speaker rated 84 dB. Three decibels of sensitivity is worth exactly as much as doubling your amplifier. This is why a 30 W amplifier on efficient speakers can play far louder than a 100 W amplifier on insensitive ones, and why the useful question is never "how many watts" but "enough watts for these speakers in this room".

Myth: Expensive Cables Transform a System

Cables do have measurable electrical properties — resistance, capacitance, inductance — and those properties can matter. A speaker cable that is too thin over a long run adds series resistance, which wastes a little power and, more importantly, degrades the amplifier's control over the driver. An interconnect with very high capacitance can roll off the top end when fed by a high-impedance source. These are real effects with real explanations.

What does not follow is that spending more solves them. Adequate gauge, sound construction, and clean, tight connections eliminate essentially all of the audible problems a cable can cause. Beyond that point, differences shrink to levels that vanish in controlled listening. The rule that serves best: buy competent cable of the right gauge and length, connect it properly, and then stop thinking about it.

Myth: Everything Needs Hundreds of Hours of Burn-In

Burn-in is a case where a genuine physical effect has been stretched far past what it can support. Loudspeaker drivers do change slightly with use: the rubber or foam surround and the spider soften a little, which lowers the driver's resonant frequency by a small amount. That change is measurable, happens mostly in the first few hours of use, and is modest. Something similar applies to a few other mechanical items.

Electronics are a different matter. Resistors, capacitors, and semiconductors do not meaningfully "run in" over hundreds of hours in the way often described, and neither do cables. What almost certainly changes over a few weeks with new equipment is you — acclimatisation is powerful, and the sound you found bright on day one becomes normal by day ten. That is a real experience; it is just not the equipment.

Myth: Hi-Res Files Are Always Audibly Better

A 24-bit/192 kHz file contains more data than a CD-quality 16-bit/44.1 kHz one, and it is tempting to assume more data means better sound. In practice, 16/44.1 already covers the full range of human hearing with a dynamic range far beyond what any listening room can use. In careful comparisons, listeners consistently struggle to distinguish a good 16/44.1 file from its higher-resolution source.

Where hi-res releases do often sound better, the reason is usually the master, not the numbers. A hi-res reissue is frequently a newer, less compressed transfer, and that difference is plainly audible. Higher sample rates also have real value in production, where processing headroom matters. For playback, the honest position is that a well-mastered CD-quality file is transparent, and format is a much smaller variable than mastering.

Myth: Specs Tell You Everything — and Its Opposite

Two opposite errors circulate side by side. The first treats the spec sheet as the whole story: pick the lowest distortion figure and you have picked the best component. The second dismisses measurements entirely in favour of listening. Both are wrong, and in the same way — they ignore which specs actually predict something.

Some numbers matter a great deal because they describe compatibility: speaker sensitivity and impedance, amplifier power into the load you will actually use, phono stage gain and loading against your cartridge, headphone impedance and sensitivity against your amplifier. Get these wrong and the system will not work properly no matter how good the components are individually. Other numbers — vanishingly low distortion figures, frequency response quoted without tolerance limits, exotic jitter specifications — are usually already far below audibility and tell you very little. The skill is not learning every spec; it is learning which handful decide whether two boxes belong together.

Myth: The Room Is Just Where You Put the System

This one is not so much believed as overlooked, and it is the most expensive oversight in the hobby. Below roughly 300 Hz, the room is not a neutral container — it is an active participant, creating standing waves that can add or subtract more than 10 dB at particular frequencies and seats. No amount of component quality corrects that, because the peaks and nulls happen after the sound leaves the speakers.

The practical consequence is a reordering of priorities. Moving speakers a foot from the front wall, pulling the listening seat out of the exact centre of the room, and putting something absorptive at the first reflection points will change what you hear more than most component upgrades at any sane budget — and the first two cost nothing at all.

What Actually Moves the Needle

Strip away the folklore and a short, dull, reliable list remains. In rough order of effect per pound or dollar spent:

• Speaker choice and placement — by far the largest single variable, and placement is free.
• Room treatment — bass trapping and first-reflection absorption, which no electronics can substitute for.
• Speaker and amplifier matching — enough clean power for the sensitivity and impedance you actually own.
• Source and recording quality — the mastering of what you play, far more than the file format.
• Correct setup — cartridge alignment, gain structure, subwoofer crossover and phase, level matching.
• Competent cables of the right gauge — necessary, cheap, and finished once done.

None of this is glamorous, which is precisely why myths persist: "move your speakers and treat your first reflections" is harder to sell than a box. But a modest system that is well matched, well placed, and set up properly will comfortably beat an expensive one that is none of those things.

Quick Reference: Claim vs Reality

Common Claim	What Is Actually True
More watts = louder	Doubling power gives 3 dB; +3 dB of speaker sensitivity does the same for free
Expensive cables transform sound	Adequate gauge and clean connections solve the real problems; beyond that, differences are negligible
Everything needs hundreds of hours of burn-in	Driver suspensions soften slightly in the first hours; electronics essentially do not change
Hi-res always sounds better	16/44.1 is transparent; better-sounding hi-res releases usually have a better master
Lowest distortion wins	Compatibility specs decide system behaviour; distortion is usually already inaudible
The room is neutral	Below ~300 Hz the room dominates; placement and treatment outrank most upgrades

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