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PostPosted: 16 Mar 2016, 17:17 
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Joined: 08 Sep 2014, 04:30
Posts: 5
Location: Zürich Switzerland
Hi,

Finally, graduated and I have some extra spare time. I would like to start building an amp, but would like to know what level of quality I should expect. I will put three relatively simple design in series. Not hard, but quite some parts and I hope to make a device that will keep me satisfied for some years.

The 3 things:
-RaspberryPi+DAC board, ~70 euro
-Preamp with mini-EQ, http://sound.westhost.com/project97.htm, <50 euro
-Amp, http://sound.westhost.com/project3a.htm, <50euro

With some fancy casing and knobs this should not exceed 250 euro. The Pi would make it also a media station, thus "all-in-one".

Would such a thing be a mini-Marantz or would spending the money on 2nd-hand amps give me better quality Sure, building is part of the fun, but I would like to know what I can expect :)


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PostPosted: 01 Apr 2016, 00:16 
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Joined: 31 Mar 2016, 23:38
Posts: 2
Those ESP projects are fairly complex for a first project. Especially if you're going to be building the circuit boards yourself.

You'll have a RaspberryPi providing the sound. Why do you want a complicated analog equalizer getting in your signal path when there's digital equalizers available for the RaspberryPi? I'm actually wondering. I have no experience with such things.

I love everything Rod Elliot writes -- the dude knows his stuff and never slips into dream-audiophile-land. I've been using my extremely simple LM3886 amplifiers for years, and have never been happier with any amplifier at any price. These simple chipamps, when properly built, are just "wires with gain" in the sense that they add nothing, subtract nothing.

Check out http://sound.westhost.com/project19.htm

Fancy casing and knobs are sure to polish the end product, whatever you build. I like my projects to look like something I swept off a factory floor. :)


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PostPosted: 03 Apr 2016, 02:17 
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Joined: 08 Sep 2014, 04:30
Posts: 5
Location: Zürich Switzerland
Thanks for the response. Complexity should be fine, though it may take quite some time. The esp website is indeed very good and there is not much left you need to calculate yourself.

The equaliser would be analog so that other inputs can also be "equalized". It also looks cool ^^


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