DIY turnable amplifier aka RIAA - newbie questions!

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I also made this design in Eagle, and created a one layer PCB, if anyone is interested.
I've also replaced a few components so the preamp is more accurate according to the RIAA curve (thanks cogsncogs!). The PCB size is 72.06mm * 41.6mm and includes an AC rectifier circuit and two voltage regulators (+-12v).

Cool!

Based on other research and advice I have received, it would not be a bad idea to add a ceramic bypass cap (0.1uF or 0.2uF) between opamp socket pin 4 and ground, and also between pin 8 and ground, especially if you plan to "roll" various opamps in that socket.
 
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