Emotiva is one of the most controversial brands in hifi today. The "specs vs cost" are almost unbelievable. However, the forums are full of horror stories with this brand as to customer support and quality. I do not own one personally so I do not speak from personal experience. Many have bought them and love them, others have had major issues with quality, repair requests, etc. One thing to note is that these are made in China with cheap components. That is not to say they are bad, but don't expect to get a McIntosh or Conrad Johnson in the mail for 1/10th the cost. Buyer beware. You may want to read this thread as their are some pro and con arguements:
http://www.martinloganowners.com/forum/showthread.php?12805-Emotiva-XPA-1-monoblock-impressions...&highlight=emotiva