I'm a happy owner of a vmp-2000e. I have read Kurt's informative review several times and many, many posts, but I still have some questions regardng the differences (electronic, sonic, fuctional) between a Seb and a classically designed valve preamp. What are the advantages/disadvantages/difference of using a solid state, discrete output stage instead of valves? And what are the differences sonically? What is the advantage/disadvantage/difference of having both input and output gain controls (most tube pres) and the Seb? What functional and sonic difference is there between using the traditional input/output controls and cascading channels with a Seb. I may have some other ignorant questions later.