Answer to Swampwalkers question: 500.00 or less. I am intrigued by the Earmax pro, and now exploring the Headroom offerings. These amps could conceivably raise the bar as far as dollars and cents. I am amazed by the scope of their products. Talk about ruling an audio niche! My preference is to find a nice second hand amp as my bucks will go further. Please keep them cards and letters coming, and thanks for reading.