They way to go tubes is tube amp and tube preamp. 2.. tube amp ss preamp. The tube amp will make the biggest difference, however both components being tube is better. I've tried SS amp w/ Carver C-1 pre, tube amp to the Carver, (better) ss amp to tube pre, and tube amp to tube pre. You have to make sure input and output impedences are a good match. Always get matching tubes and 1 or 2 full back up sets. It's just part of the price of better sound. Then again, if you like what you have now...