I own the BHK, have had only a brief exposure to the RP7 and spent a lot of time with the RP5. I liked the RP5 a lot and in my brief exposure to the RP7, it is great.
With the BHK, I swapped the stock tubes out for a pair of NOS Tunsgrams (which was Mr King's preferred tube according to Kevin Deal and I believe him!) and with those tubes it is outstanding. I found the stock tubes unpleasant.
Which is better is a really tough call. With stock tubes, my gut tells me the Rogue. With the Tunsgrams, it might swing to the BHK. Both will be an upgrade and both companies make outstanding products and have superb customer service.
I am going to sell my BHK soon. I have since upgraded further (because I am the importer) to the Art Audio Conductor which is in a different league from a preamp perspective. Analog volume controls, gain that is adjustable and customizable based on sensitivity of your amp, etc...
With the BHK, I swapped the stock tubes out for a pair of NOS Tunsgrams (which was Mr King's preferred tube according to Kevin Deal and I believe him!) and with those tubes it is outstanding. I found the stock tubes unpleasant.
Which is better is a really tough call. With stock tubes, my gut tells me the Rogue. With the Tunsgrams, it might swing to the BHK. Both will be an upgrade and both companies make outstanding products and have superb customer service.
I am going to sell my BHK soon. I have since upgraded further (because I am the importer) to the Art Audio Conductor which is in a different league from a preamp perspective. Analog volume controls, gain that is adjustable and customizable based on sensitivity of your amp, etc...