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Subject: Re: yet another Mic-related question
From: Chris Holt (
Date: 2003-03-19

On Tue, 18 Mar 2003 09:13:39 -0800, Matt SF wrote:
>On Sun, Mar 16, 2003 at 06:30:19PM -0500, Chris Holt wrote:
>>It certainly depends on your definition of "super expensive". After
>>having reviewed schematics of several homebrew type microphone preamps,
>>both with and without bias, I've come to the conclusion that unless you
>>take the time to build one yourself, you are going to get fairly well
>>ripped off.
>>Sound professionals seem to have the most reasonable solutions in the
>>around and under $200 range. The SP-PASM-2, for instance is a self
>Chris, good point, sorry if I was a bit vague there :) Yeah I have seen
>the SP units and they look nice, but seem overpriced. I know we all
>to make a living in this world, but how much R&D really went into those
>small preamps? And now much do they really cost in materials? They're
>around $US 200. Seems a bit much.
>Can you recommend any above-average performing schematics/plans online
>a DIY mic->line preamp?

This one requires a bit of skill, but PCB layout is provided (though
you're on your own for stuffing) But with the right components will
provide excellent specs, plenty of amp headroom and a high (9v) bias

I had one other that was similar, but the link seems to be on vacation.
I'll let you know if it returns.


Page was last modified "Jan 10 2012" The Rockbox Crew