14v transformer unreliable

It's been 15 months that I have this device - which works very well and gives complete satisfaction about the sound ... but the transformer is a disaster! It's been two times already that I replace him. First, because it is unique: 14v, never seen in electronics. Second, because the manufacturer never thought that one can look for a replacement. Finally it is necessary to tinker with modular transformers at high prices. No, no, no: why NOT BUY THIS PRODUCT.