Hey there. It's been 4 years with my K701, and I really love those headphones. I had to listen to vary selection of headphones but something always brings me back to my beloved K701 sound. All this time I've been driving my K701 from Xonar STX amp input (stock op-amps, extra-high gain, hi-fi mode always on, 96Khz - FLAC\MP3 320). same goes for any headphones I've been testing. Problem starts when I wants my K701 to sound perfect, and their sound is awesome, but I feel that It's not meet my first expectations when I first bought those headphones. What driven me choose this specific model was my high expectations for details, transparency and analytics. I wanted my headphones to reveal every detail in the recording, and almost every recommendation leaded me for K701. That's true, the K701 are very detailed - the soundstage is very wide. but I feel it doesn't give me the high analytic level I want. I feel like there is not much transparency - like high vocals or other dominant things can prevent me from hearing the other details. also, I feel like the headphones are somewhat lack of power. something in the sound seems to sound like it's unamped well. I got that when some headphones which are very low-badget revealed me more details than the K701. Also, there is the bass. it's almost absent, and I am aware that K701 aren't exactly basshead, but It's really like there is no bass AT ALL. Some readings here and comments suggested me that STX amp is great, but the K701, regardless their 32-ohm imp, are very power hungry and the STX just can't do the work, and same goes to any entery-level or even average amp, so if I want to get my perfect sound I have to get my hand deep into my wallet for a proper amp... So, I need a very strong amp who will match the K701, and can give them what they lack of, for me- highest level of details, transparency and analytics, and also, some low-end boost - not much, but heal it from dead-pale bright as they sound now. My budget, as mentioned, is high. I can climb to 1K$ if necessary. Please help me choose once and for all. Thanks!