Tag Archives: pre amp

PCB Tested and Working

Amplifier PCB tested and working. 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 Board Construction

I have now started work on building the amplifier board. This contains the pre-amps as well as the power amps. I’ll add a photo once the board is completed.

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Using DIPs for the op amps

Here are the pre amps almost finished only this time using DIPs (Dual In-line Package).  These are also known as PDIPs and CDIPs with the first capital denoting either plastic or ceramic. The build was much easier but still not … Continue reading

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Using SMD for the op amps

I very much believe in the concept of having the shortest signal paths possible, so decided to use surface mount device packages (SOIC).  As daunting as it seemed I was sure with a little patience I should be able to … Continue reading

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