Focal 1037be's Amp Suggestions ???

My guess is that it's not the amp, but the large room -- you have a lot of cubic feet and most speakers can't really fill such a space.

You definitely do not want to move them into a square room (15' x 15'), which would be the worst possible acoustic environment - square rooms accentuate room modes, usually guaranteeing large peaks and dips in a system's frequency response.

I assume that you are reluctant to part with such nice speakers, but the space you have calls for something bigger, assuming you listen to challenging music (orchestral, loud rock). Yes, adding subwoofers would help, but your main speakers are, at the end of the day, best for mid-sized rooms (one midrange driver per speaker).

The sound is somewhat different than the Focal house sound (but reasonably neutral), and their look will not appeal to a lot of people, but a used pair of Dynaudio C-4's would be an affordable option -- they are very good speakers that will fill large rooms and should work with your amp (I am not otherwise going to get into recommending speakers, as there are so many variables and available options).

I have my speakers in a 15' x 15' x 9' room ... but with a view of the Hudson and the mountains -- life is full of compromises.

I heard a pair of Nova Utopia Be's (no doubt an improvement over what you are running) in a room about the size of your big room and was very impressed. Just a thought.

You wrote:

"I'm a rocker and I do some jazz once in a while. So what do I do to get the most from what I have? ... Do I go after more power? Buy a better speaker? Move the system to a smaller area? Gee, this isn't very easy!"

I have to assume that you want to use your large room as your listening room, and if you like to listen to rock, which requires scale, it's your best option, so let's take that as a given.

Your Focals are very good speakers, but, regardless of the room, they are not suited to really large scale music like orchestral or rock (in fairness, very few speakers are). I will assume that you have a speaker budget of approximately $10k. To do rock 'n roll with Focals, you need the Nova Utopia BE or Grand Utopia BE, both of which are very expensive even when purchased used. WattPuppy 6 to 8's are also "rock" speakers, but they, too, are too expensive (and I hate their tweeter). Two speakers available used for $10k that have finesse, a lot of headroom and that will work with your amp are the C-4's mentioned above and Escalante Fremonts, which I run. The Fremonts, especially, will work with a 150 watt/channel amp, as they are highly efficient (a true 93 db.) and will knock the walls down with 100+ watts/channel. If you are in the NYC metropolitan area, you are welcome to come by and hear for yourself (I drive mine with either a 70 watt/channel VAC Renaissance 70/70 or a 125 watt/channel darTZeel, both of which yield superb dynamics).