Found this 2 opamp sound quality boosters on aliexpress.

First is a opamp decoupling socket.

AVX Tantalum Capacitors
Murata MURATA C0G 5% Precision Capacitor
TDK X7R 10% Precision Capacitor
Murata MURATA X7R 10% Precision Capacitor
Koch Corona 3U Gold Plated Beryllium Copper Female Pin
Japan Hirosaki 63sn solder

EDIT: Forgot to add in that it advises against using it in a heavy negative feedback circuit.

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Second is a Dual Single DIP8 to Single adapter.
It claims to increase the sound quality and drive force.
It puts the second chip as buffer, but idk if its that useful.









Imagine combining the 2 with a Dual to single adapter and using 4 opamps instead of a single dual one with the decoupling "socket".

EDIT: messed up the sizing.
 
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Interesting as a concept.

But decoupling is decoupling, forget the brand naming, and magic solder implications.

Might be useful as a no-solder drop-in add-on when you don´t want to mess with existing products, but nothing stops you from soldering a no brand generic ceramic capacitor across relevant pads.
 
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