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From: "Edward Rawde" <invalid@invalid.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Sinewave oscillator without gain control.
Date: Fri, 24 Jan 2025 01:02:37 -0500
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"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:vmv6ac$22ufe$1@dont-email.me...
> On 24/01/2025 11:14 am, Edward Rawde wrote:
>> Before you can make a 1kHz sinewave oscillator with constant output level and better than 120dB harmonic distortion you'll need 
>> an
>> oscillator which does better than that when it passes through the required output level.
>
> This is obviously true. Why do you think you need to tell us about it?
>

You do make me laugh sometimes Bill.
Your circuit doesn't come anywhere close to 120dB but it does depend on which simulator you ask.
Adding a FET gain stabilizer to the circuit I posted seems to have negligible effect on the distortion.
So I'd concentrate on the oscillator distortion level rather than the gain controller contribution if I wanted to attempt better 
than 120dB.