Sennheiser announced an updated version of the HD25-SP. These closed dynamic headphones are perfect for monitoring, recording and outdoor applications. They are also a lower-cost alternative to the HD25-1 II and they should cost approximately $100.

The HD25-SP II is only shipped with a 3.5mm to 6.3mm adapter stereo jack plug and 3 meters OFC cable. However the specifications are not in rest because the HD25-SP II boasts an impedance of 60Ω, a sensitivity of 114dB and a frequency response of 30Hz ~ 16kHz for a distortion factor of 0.5% or less which are not bad for a $100 headphones.

The Sennheiser HD25-1 II will be an improved version of the previous model HD25-1. These headphones belong to the "Closed Dynamic" family still adopt the double arm and weight approximately 140g (without cable), as for the price, it has reached $200.

The HD25-1 II is bundled with 2 different sized ear pads, 1.5 meters steel cable and a 3.5mm to 6.3mm adapter stereo jack plug. Note that almost all parts including ear pads, cable, ear cups, and headband pads are replaceable.

And for the technical specifications the HD25-1 II has an impedance of 70Ω, a sensitivity of 120dB and a frequency response of 16Hz ~ 22kHz for a distortion factor of 0.5% or less.