A short research about Frequency Response   AKG K612 pro:12 to 39500 Hz DarkVoice:10Hz~20kHz +/-1dB Bravo Ocean:10 Hz – 60 kHz +/- 0.25 dB Little Dot MK III:12 hz~100 Khz  (-1dB) Little Dot I+:10HZ - 50KHz (-3 dB)   I think Bravo Ocean performs great.It's cheaper and also has RCA Line...

Thanks for the response guys!!The burn in period of my 612's is 48hours approximately.I do believe that I really need to buy a nice Headphone amp to enjoy my K612.After Christmas holidays I will buy and try The Little dot I+ with various tubes or BRAVO OCEAN.

AKG K612 pro and Little Dot 1+   Hi everyone.Recently i bought the AKG K612 pro to use them at midnight, because my neighbors complain about my Dali Ikon 1 speakers.My first impression after one hour of listening, is that they sound very cold and clinical with very bad bass performance.I don't...