Hey! I like your opamp pictures, really great :). Why didn’t you buy a steel or aluminium case for shielding?

I need to get them outside my country and they get expensive, I do have 5 little ones for portable use but at 20€ for case you get why I didn’t buy a big one. I could actually shield all the case with that aluminium tape but I’ll just shield the amplifier board & crossfeed … Continue reading Hey! I like your opamp pictures, really great :). Why didn’t you buy a steel or aluminium case for shielding?

Why not a dual power supply? Or just two nine volt batteries rather than a potentially noisy and high impedance virtual ground?

I’ll make a dual in the future using the sigma25 dual design, two 9V batteries can be dangerous to headphones if I forget the amp running and that happens a lot.The dual TLE2426 virtual ground I want to make doesn’t worry me much specially when used with the JRCs.Anyway I already have a headphone amp … Continue reading Why not a dual power supply? Or just two nine volt batteries rather than a potentially noisy and high impedance virtual ground?