Thanks for that info Raul. FWIW, I do not own the LA-150II, but have been considering trying it. I am trying to gather canditates in the 8-12K range which will have the gain for .25mv cartridges. I am thinking tube, with the flexibility of adjustable loading. I know there are a few units that also allow the bypassing of the built in transformers. The EAR units come to mind first. Granted, I may not find a unit that will have enough gain without using the transformer. However, that option will be there in case I ad or move to, say a .4 or .5 mv cartridge.