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.
Edited by Nurgayan - 3/24/17 at 8:31am