I need this mainly to be used with my Nokia 1020 but also my Asus 701K tablet. I'm not sure if I should go with a portable amp or a portable dac/amp combo. Also I'm not sure what to buy. I don't want to spend a lot of money. Say no more that $150 USD maybe $170 if I need to stretch a bit. I'm looking for something with a good amount of power to push an assortment of cans. I would like something with really good sq. My current headphones and earbuds consist of: Cans: Audeze LCD-2 Rev 2 Fazor Sennheiser HD595 Harman Kardon Harkar CL Grado 325i Sony MDR XB700 Sony Pulse Elite (Headset/mic) Buds: Sony MDR-XB60EX Sony MDR-EX85LP Sennheiser CX-200 Any ideas?