Bit of a pricey sucker though (which, mind you, is not unexpected for a low-noise JFET input opamp).Yes, OPA2828 (dual version of 828) should definitely work well in this preamp, with a socket adapter
It has low noise, high GBW, high slew rate and is unity gain stable. A good candidate for those who want to play, definitely.
I would give OPA1652 and OPA1656 (and maybe OPA1688) a closer look as well. Their MOSFET input with very low common-mode modulation of input capacitance should be a good match to the highish-impedance circuit. Even the bipolar OPA1662 would have a more suitable en/in balance than the stock LME49720. Does anyone make a hot-rod NJM4580/8080, NJM2068/8068 or LM833 (and is NJM5532 any good for input impedance distortion)? Stuffing some of those in there would be interesting for sure.