Save yourself some money and look into the Audio Interface CST 80 SUT. Comes in a 40 Ohm or 1:10 version that is absolutely perfect for the 103.
I have both the 40 Ohm and 3 Ohm versions and they are by far the best SUT I have ever owned.
I have both the 40 Ohm and 3 Ohm versions and they are by far the best SUT I have ever owned.