How do I connect my DAC and Fosi Audio V3 to passive speaker

My configuration is:
iPad (USB-C) → (USB-C) DS1 (3.5mm out) → (RCA IN) V3 (SPK OUT) → Passive Speaker

[@dragosthule]

Fosi......real voices. Great product!

[@Branditsch]

Which cables you use? Thanks

[@RobertoBlatt]

É possível usar cabos RCA simples na saída ?

[@D1N02]

Don't ever plugin or plug out your rca with the amp turned on. If you touch them to a banana plug it sparks and your dac is likely dead

[@sujoybhuiya7578]

Cable buy link please, Amazon 🙏