Not that good
I purchased these Reflector tubes to do some rolling over the ElectroHarmonix Gold on a Lite LS69 Balanced Preamp. They resulted a lot less detailed than the EHG. It appeared like my Loudspeakers (Apogee Centaurus Ribbon Speakers) had a pillow attached to the front. I switched back to the EHG and everything worked wonderful again. I am going to return these tubes and test the Gold Lion or the Jan Philips. That is the great advantage to buy from Jon, you can return tubes that doesn't perform as you expected and try some other that might do.