The aim of this project was to add remote-control convenience to the hi-fi without compromising sound quality. Additionally, multichannel operation is supported.
I've recently uploaded higher resolution images as it's no longer 2002! Many can be enlarged by clicking on them. Obviously quality is limited by the camera I had back then, but they're not too bad.
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Picture of the finished pre-amp, with front panel labelling and new graphic display.
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Nearly finished - at this stage the front panel needs to be re-painted and labelled.
In-depth project details
- Overview - Introduction to the pre-amplifier.
- User Interface - How to operate the device.
- Analogue circuit design - Full details of the chosen solution.
- Control circuits - The PIC-based control system.
- Power supply - Design of the power supply.
- Construction - Assembling the pre-amp in a 1U rack case.
- Conclusions
- Full Schematics - Complete circuit details.
Background information
- Initial Plans - Detailing some of the early thought processes.
- Analogue Research - How I arrived at the PGA2310.
- Preamp FAQ - Please check here if you have questions about this project.
Links to similar projects
- Krzysztof Marcinek's 7.1 Preamp - A multichannel preamp which incorporates a USB DAC.
- Daniel Clark's 7.1 Preamp - An excellent example of the PGA2310 in a multichannel preamp...
Has this project inspired you to build something similar? If so, please let me know and I'll link to it from here...