Superlux HDB-581 Black bluetooth

Bluetooth Headphones
Bluetooth Version 4.0 (MP3, AAC, SBC, aptX)
Supra-aural
Dynamic
39 mm neodymium driver
Sensitivity: 102 dB SPL (1 mW)
Impedance: 70 Ohm
Frequency range: 20 - 20000 Hz

SUPERLUX HD 387

HD387-In-ear Headphones

Type: Dynamic, In-Ear
Driver: Ø8mm Neodymium
Frequency Response: 20-20k HZ 
Impedance: 16O 
Sensitivity: 106dB SPL (1mW)

HD387 is equipped with 8 mm driver which provides wide and flat frequency response and full spectrum details. 
Delicate treble and powerful bass delivers immersive music experience! The unique Cubic Backcup design of 
HD387 delivers the same bass reflection effect as the speaker cabinet to provide deeply but clean bass 
frequency. The Ergonomic detachable ear hook design with stability and comfort characteristic will fit you 
when you exercise. 

Cubic Backcup design delivers the bass reflection effect same as the speaker cabinet to provide deeply 
but clean bass frequency for wide range use. ø8 mm driver provides wide and flat frequency response 
and studio-level sound quality. 

Furnished with three different sizes of earplugs and earhooks for every individual to find the best fit. 
Ergonomic design improves the stability on ear and not easy to fall off

HD660
Professional Monitoring Headphones
The HD660 is a closed-back dynamic headphone for the most demanding professionals. The accurate sound profile and 
comfortable headband make the HD660 the perfect monitoring headphone for recording studios, post production or 
broadcasting applications. With a carefully tailored frequency response, the HD660 offers an excellent clarity of 
sound with a natural and balanced character. Soft earpads and adjustable, sliding earpieces, together with a 
single-sided connecting cable, ensure listening comfort during long term use.

Type:Dynamic, Closed-back
Driver:Ø40mm, neodymium
Sensitivity:96 dB SPL(1mW)
Frequency Response:10~30,000Hz
Max. Input Power:100 mW
Rated Impedance:150 O
Earpads:leatherette
Cables:3-meter coiled, single-sided cable
Connector:Screw-on gold plated stereo mini plug
Headphone Caliper Pressure:Approx. 6N
Weight(with cable):250g