The second issue I had was about the sound. Many PSG chips have an amplifier on it so I just need to adjust the impedance and attach to an amplified speaker or soundbox. I actually removed the RF signal and added a jack not knowing that a preamp was needed in the project. The result was having to improvise one and add it to my schematic. Now I can try to order another PCB with the final prototype results.

(Improvised preamp solution with op-amp TL071)