[sdiy] what opamp for "warmth"? (I know, I know...)

Mike Bryant mbryant at futurehorizons.com
Thu Apr 6 20:12:25 CEST 2023


Nice idea.  Could also pass the output through a second opto to get a 4th harmonic to add into the mix.

________________________________
From: Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of Oren Leavitt via Synth-diy <synth-diy at synth-diy.org>
Sent: 06 April 2023 18:33
To: synth-diy at synth-diy.org <synth-diy at synth-diy.org>
Subject: Re: [sdiy] what opamp for "warmth"? (I know, I know...)

This popped into my email today:

https://www.edn.com/a-simple-circuit-with-an-optocoupler-creates-a-tube-sound/

- Oren

On 4/3/23 4:18 PM, Neil Harper via Synth-diy wrote:
> i know this is going to be controversial, and I'm grabbing my popcorn..
>
> i have a digital effect that I'd like to "warm up" in the last dry/wet
> mixing and output buffering stage. So wondering if there's any choice
> of opamp that might give some favorable non-linearity quality to the
> output sound. Would be running them with a single supply +9V.
>
> as for what specs constitute "warmth", I'll leave that up to you.. :)
>
>
>
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