According to Oppo there is no sonic difference between the single ended (RCA) and balanced (XLR) outputs except for the level of the XLR being 3 dB higher. If that 3 dB is important for the following equipment, there is no reason not to use XLR if connections are compatible. If Dopoque is using analog from the 105 to the line stage, then the line stage must be coloring the sound in a way he prefers; if he is using a digital connection, then he must prefer the analog processing of his line stage to that of the 105.
Morty74 might want to connect the output of his cable, satellite, or TV to the HDMI input on the rear of the 105 so that source can benefit from the superior DACs of the 105, and use the input selection button on the 105 remote.
db
Morty74 might want to connect the output of his cable, satellite, or TV to the HDMI input on the rear of the 105 so that source can benefit from the superior DACs of the 105, and use the input selection button on the 105 remote.
db