General Hi-Fi

Frequently asked questions about general hi-fi stuff including various types of equipment, technical concepts and advice for getting the best results.

Are low-power amplifiers acceptable in hi-fi systems?

It depends on the system, sometimes yes, usually no. The sound pressure levels achievable with a hi-fi system come down to two parameters: amplifier power output and speaker sensitivity. These two parameters are inextricably linked. Low-power amplifiers can create realistic sound pressures and dynamics, but only when partnered with sensitive speakers. This all comes down […]

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What are your thoughts about audio gurus?

I advise you to slowly back away from any guru implying they possess magical powers in relation to designing/repairing/improving/servicing audio gear, and run when safe to do so! Audio gurus are generally associated with pseudoscience and nonsense, often claiming magical powers through ‘secret’ wiring skills, ‘special’ ultra-bad construction techniques and dollops of mystical horse-$hit. Goodness

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What’s the highest fidelity, highest resolution music source I can access at home?

As of 2025, it’s still either magnetic tape running at 15 IPS, an excellent vinyl playback system, or hi-resolution digital files played back through serious DACs. People are often upset to learn that their favourite digital files were originally recorded onto analog tape, but there is more obscuring of the provenance of digital files than

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What do you recommend in terms of power supplies for hi-fi gear in older premises?

Power can be a real issue in older houses, so here are a few suggestions. The first might seem obvious, but have everything checked and tested by a qualified electrician. This can identify and rectify wiring and ground issues, broken outlets etc. Power outlet testers like this one allow end-users to identify miswired outlets, ground

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