Hello, I am building an inexpensive system for listening to music from a PC. The question is what is better to take as a DAC. Right now I'm using the ifi Zen DAC, but it's too weak as an amplifier, and also produces a small but still noticeable noise at high volume when connected to an amplifier. I settled on 3 options: Topping E30, Topping DX3Pro+, SMSL SU-6. I've tried the E30, it works fine and the now rare Asaha-Kasei chips are on fire and the price is the lowest, however the E30 lacks bluetooth and needs a separate power supply (my not too expensive motherboard is not the best power source). On the other hand, the DX3Pro+ and SU-6 are quite similar as DACs, although the DX3Pro+ is slightly more expensive. What to take from all this, I read the topics on all of them, but I can’t make an unambiguous choice.