In Sanskrit, the word "deva" stands for something divine, heavenly, excellent. Indian mythology knows 33 devas - angelic counterparts of demons who act on a higher level than man. In the case of HIFIMAN, one is inclined to call the DEVA model a supporter of good sound.The DEVA Wired comes without the Bluemini Bluetooth module. Nevertheless, its focus is on mobile use with a player. The scope of delivery includes the corresponding cable with 6.35 mm jack adapter. In principle, DEVA can be operated symmetrically with an appropriate cable upgrade. For DEVA, the source does NOT have to be a sound superior device! In terms of price, it is below the HIFIMAN SUNDARA. In contrast, the DEVA is the more forgiving headphone, which does not let weaknesses in the recording stand out so clearly.For those who only value sound quality, have a good headphone output and are willing to forego mobility, the SUNDARA is the right choice. If you're looking for a really big, mobile cinema, you should consider the ANANDA-BT.Frequency response: 20 Hz to 20 kHzImpedance: 18 ΩSound pressure level: 93.5 dBWeight: approx. 360 gConnection: TRRS, 3.5 mm