17. RCA/PHONO use attention problems

When using RCA input, please make sure the RCA/PHONO toggle switch is hit to RCA input, the RGB light shows blue color; if it is PHONO input, the sound heard will be severely distorted.

Similarly, when using a phono without phono amplifier to connect to SA1, if you don't hit the PHONO input, the RGB will show pink color, and the sound of SA1 will be very small at this time.