T4S to RCA Inputs
The house system at a gig has only RCA phono inputs.
RCA phono inputs are usually consumer level inputs: -10dBv. Your T4S outputs are pro audio level: +4dBu. The outputs of the T4S will likely be 11.79 dB higher than the RCA phono inputs were designed to handle. This may still all work, but you may have to keep the T4S Master Output lower than usual to avoid distortion.
Not applicable to the resolution for this issue
Related discussion Stereo Out or Not