Have the transformer bought to swap 1.5 Watt LED 4 x 20 Watt halogen for 4 x. The transformer has to be subjected to a nice small design without cheap. He acts not inferior in quality to the original Transformer. Due to the size he let spoil yourself just fine. When connected you just have to pay close attention + (brown) and - (blue) at the secondary current to connect properly. I'm very satisfied. The transformer is compact, works with value and giving good service, as one would expect. No hum, no noise. I can only recommend the transformer for the money (hardware store from 20, 30 euros) and would buy it again.
