Category Archives: Amplification

Quad 405-2 Service and Upgrade

At the moment I am working on a friend’s Quad 405-2. ¬†It has never been serviced and is well over 30 years old. ¬†Electrolytic capacitors have a limited lifetime, mostly 2000 hours, special ones more (the ones I am using … Continue reading

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Lorlin Plastic Switches

I really do not like using metal switches for HiFi. Electric currents (including small signals) produce magnetic fields in surrounding metalwork. Even aluminium produces some bizzare effects when a magnetic field is introduced to it – look into this on … Continue reading

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Amp Developments

The break has also given me time to think about the design. I like to get components as close to each other as possible. PCBs, generally speaking, have poor quality copper track on them. So I was building the circuit … Continue reading

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