Unlike other series of everyday headphones, there is unity and order in the ranks of HJ. The foundation of this line is the entry-level in-channel models, which only rarely cost more than $ 10. In fact, these are all variations of the same 16-ohm plugs, which differ in the depth of the bass being played and the frequency range.

The locomotive of this series is the RP-HJE125 model, which is called "people's vacuum headphones" in numerous reviews. No one remembers what year they came out, everyone sees how, together with Xiaomi Piston and JBL T110, they captured the TOP 3 sales in the category "vacuum headphones with wire connection". The success of this line was influenced by a combination of several factors. Namely, the high-quality sound characteristic of more expensive headphones, convenience in everyday wear, a rich choice of colours and amazing durability.


In 2016, Panasonic engineers decided to modernize the line by releasing a couple of pretty cool RP-HJX6MGC and RP-HJX21MGC models with a double capsule, a metal case and an impressive talent to play bass music. They are capable of reproducing bass in the range up to 4 or 5 Hz and were loved by fans of electronic music, however, they "did not take off" due to prices that increased 6-7 times. Moreover, the RP-HJE125 mentioned above also give out so much bass that hold on tight to the chair.