Update: I have the MDR-CD1700 now, which is not quite the CD3000 (the CD3000 is more sterile, while the CD1700 is darker by some opinions), but some models have the same driver allegedly (I'm not sure if this is an accurate info though, no evidence so far) - anyways, the CD1700 is fantastic. But the portable models, for example the MDR-62, MDR-M88, Aiwa HP-X10 walk the walk too. Especially the Sony earbuds, which are actually little wonders of their age, unparalleled SQ to this day. I doubt an MDR-E232 should hide from any recent earbuds.
The MDR-62 was the one to follow the MDR-51 and by that, it fixed the bass issue beautifully. I think the MDR-62 is among the 5 best earphones Sony has ever created when it comes to overall SQ, weight, etc.
My New old stock AIWA HP-X10 the best small/medium size ever created. I will never sell it. Flat speaker with ultra rare and very expensive Samarium-cobalt magnet. A fantastic and unmatched 3D sound
Aiwa HP-V151 Pristine sound...It is balanced but above all very comfortable and light. Clarity and the best treble for under 20usd
Aiwa HP-V151 Duo Bass Boost Pipe Phone Specification Driver Unit : 16 mm Impedance : 16 ohms Sensitivity : 107 dB/mW Rated Power : 10 mW Max input power : 50 mW Freq Response : 8-25,000 Hz Cord Length : 1.2 m Weight : 5 g web image