My Threshold amplifiers required a very low output impedance from the source (50 ohms) so if I connect the Bricasti or any other source with a higher output impedance I get a slight buzzing sound due to the impedance missmatched.
I am running to balanced output thorugh my Threshold T2 pre-amp and sometimes using the single ended outputs directly to my amps since SE input impedance in my amps is a little higher than the XLR.
I have not been able to distinguish much difference in the quality of the sound between the SE and the XLR outputs. The main difference is the output voltage. The XLR outputs have about 3.5 volts standard from the factory and I think the RCAs have 1.7 volts. The XLR are adjustable so you can match them to the sensitivity of your amp. The adjustment process is very easy.
I am running to balanced output thorugh my Threshold T2 pre-amp and sometimes using the single ended outputs directly to my amps since SE input impedance in my amps is a little higher than the XLR.
I have not been able to distinguish much difference in the quality of the sound between the SE and the XLR outputs. The main difference is the output voltage. The XLR outputs have about 3.5 volts standard from the factory and I think the RCAs have 1.7 volts. The XLR are adjustable so you can match them to the sensitivity of your amp. The adjustment process is very easy.