Gentlemen:
I USED to own Mahlers and Rowland amps (and now own different speakers, but still use Rowland preamplification).
Shane is right that the Mahlers will generally only work with big solid-state and that all of those big woofers require some work to eliminate boominess.
I do not know Rowland 7's well, but they will certainly have the grunt. I would recommend top-flight non-Class D amplification with real current. They sounded spectacular with Rowland Model 6's, but perhaps you would want more horsepower.
Hope this helps.
I USED to own Mahlers and Rowland amps (and now own different speakers, but still use Rowland preamplification).
Shane is right that the Mahlers will generally only work with big solid-state and that all of those big woofers require some work to eliminate boominess.
I do not know Rowland 7's well, but they will certainly have the grunt. I would recommend top-flight non-Class D amplification with real current. They sounded spectacular with Rowland Model 6's, but perhaps you would want more horsepower.
Hope this helps.