Phase 100 rant, and question: TL022 = TL072 ?

[Ashura]

This was the work of a former editor of UK Elektor, who told me it worked very well up to line level. He specifically modified the circuit for 15v operation - because he could!!

Okay. I thank your post. Certainly this information can be useful to someone.
I do not speak English natively, so sometimes I have a hard time understanding some constructions of phrases or specific terms. If I understood correctly, he made the modification to 15v just to test and see if that worked... is that what you meant?

[StephenGiles]

This was the work of a former editor of UK Elektor, who told me it worked very well up to line level. He specifically modified the circuit for 15v operation - because he could!!

Okay. I thank your post. Certainly this information can be useful to someone.
I do not speak English natively, so sometimes I have a hard time understanding some constructions of phrases or specific terms. If I understood correctly, he made the modification to 15v just to test and see if that worked... is that what you meant?

Nearly - he kew it would work but I think he chose different transistors that would operate more efficiently at 15v. Sadly the guy is no longer with us so I can't ask him. Incidentally your English is excellent!