Firefly 12AX7 Amplifier PCB
[FireflyPCB]

This is a very high-quality PCB that helped me easily build an awesome-sounding amp. Although I don't have experience with this, I just followed the guide and obtained a very rich and warm sounding and perfectly functional amp! I paired this with an Alnico speaker and I personally find it sounds better than the low-watt (1w-15w) tube amps from the big brands I tested before.