IME, all of the Sony models in this style (7506, v6, etc.) benefit greatly from some very basic mods.
I own 7506 for DJ/Casual listening/beater use, with these mods (dynamat on driver cover and bass port addition)
They went from “fine but not great” as experienced by Amir’s reviews of both the 7506 and v6, to actually very, very good.
A/B of them next to stock units, it’s genuinely jaw dropping how much better the modded pair is. Considering you can do the mods for $free.99 to <$5 it’s a no brainer. Would I use them as a professional reference? No. But they are extremely enjoyable without EQ now, and an almost unbeatable value.
Also, AFAIK, the differences between the v6 and 7506 are so minimal they are dwarfed in measurement and setup variations. I’ve owned both and couldn’t tell a clear difference between them (corroborated by many other measurements and subjective trials).
I feel like the myths associated to the differences are akin to hd600 vs hd650. you get subconsciously programmed to hear a difference by previous testimonials when nothing significant exists in reality.View attachment 345120
Really nicely done!
Mine is also modded 7506 (neodymium magnets) with a black brainwavz pads and a Hifiman stock cable. I agree with you, it’s unbeatable value and shames all Sennheiser 6X0 series out there in subjective sonic performance