Nurgayan
100+ Head-Fier
between the LME 49710 and NE5534A which one is you're favourite ? Did you buy you're opamp on ebay ? In case yes a favourite seller that sell one of this and they're original ?
For me, the option with NE5534A is more preferable. However, it requires an additional element, such as a capacitor to work in I/V stage. In any case, both options are not standard. I bought chips and adapters, and then I did soldering. Purchased electronic components on Ebay, mainly from the seller under the nickname HIFIIC.