It doesn't sound like you are listening to Oppo PM-3s. Check the label. Just kidding. They are not at all power hungry, in fact quite the opposite. That, and your hearing impressions, make it sound like there is something wrong with the pair you have. Seriously bad. They are about as flat an neutral as it gets when they are working right. That is boring to some people. Tastes vary. Most listeners prefer them over EL-8s or call it a tie. Too bad you don't have them around to compare. It could be you don't like planars, but like Jabba you may grow to love them. They have a way of weedling into your heart. Give them time as you say you will.