I love my thiel 2.3s with my pass labs equipment. I started with the x-150 and x-2. I now have the x-1 and x-350 (I needed more inputs than the x-2 and I also will upgrade the thiel 6s when space permits) The x-150 and x-2 are closer to x-350 and x-1 than they are to the x-0 and x-600 monoblocks. I dont need to purchase any tubes with my thiels now. The x-150 and x-250 or x-350 are very inexpensive here on agon.
Hope this helps
dave
Hope this helps
dave