I have a Modwright LS-36.5 remote controlled tube line stage for sale. It is like new and will come with the full Five year Warranty. This is a superb $5000.00 fully balanced preamp. It used 6h30 Russian super tubes with a 5A4 rectifier tube in the tube rectified power supply. It also has a multi channel (HT) bypass. It has both balanced and single ended inputs. The LS-36.5 is excellent but it can even be expanded, in the future, with the huge separate power supply, that Modwright makes, and at that point it is as good as any preamp made up at anywhere near its price.