PREAMPLIFIER UPGRADE QUESTION

A vote for the RP-9 here. I find it so quiet and smooth. Very pleasing to my ear, especially with my warmish McIntosh solid state amplifiers, now paired with my Rogue ST-100. It has the tubes and features I find useful, balance adjustable via remote, processor loop, also controllable from the remote, and even Home Theater bypass, which I’m not currently using, but a nice to have. Display can also be controlled via remote.
I applaud your decision to work with a dealer, I think they bring more value to your system than any single component. 

I've reviewed this thread three times now and lean quite a bit to that Rogue matching nicely with that cube. Regards, Scott

Great you're using a dealer, but isn't part of that service being able to have a home demo?  You're looking at a pretty good chunk of change, no?

@kjl1065 If you are planning a balanced line preamp, its a good idea to ask if the balanced preamp supports the balanced standard, AES48. The reason this is important is the balanced line system has several goals amoung which are elimination of ground loops and elimination of interconnect cable artifact. For the latter, if you've ever auditioned cables and heard a difference, that is what I'm talking about. Imagine not having to worry about cables again...

These two benefits are lost if the balanced line standard is not supported by the preamp. Most balanced preamps I've seen don't support it; I think the reason is to reduce cost, or else the manufacturer may not be aware that there is a standard.

Thank you for al your responses. I have narrowed down my preamp choices to the Bryston BP-19 and the Rogue RP-9. My dealer sells both and I am looking hear them together. The rest of my system consists of a Bryston 4b-3 cubed power amp, Chord q test dac, Lumen U2-mini streamer and a pair of Martin Logan Impression 9 loudspeakers. My preamp is the Rogue RP-1 (entry level)  Will either of the 2 preamps that I am considering be a substantial improvement over the Rogue RP-1. I am seeking a substantial improvement due to the high cost of the remaining 2 preamps. I am sure that there may be better preamps out there that my dealer does not carry, but I wish to continue working with him because his advice, service and integrity is a tough combination to find.