We don’t sell either brand, but I used to work at a store that sold both brands.
Rogue amps are an excellent value but have a tendency to sound a bit on the dark side with decent but not super punchy bass.
The VTL is a clearer, more neutral amp with excellent dynamics and good bass without the mudiness of the Rogue.
So yes that in my mind would be an upgrade. we have a demo pair of CJ Art amplifiers which will in some ways sound even cleaner then the VTLs.
In every way the VTL is a much better amp then the Rogue stuff, howerver if you look at the price of the two brands the VTL should be a lot better it is a way more expensive amplifier.
Dave owner
Audio Doctor NJ