Sennheiser HD 448 Headphones .

Sennhesier HD 448 for sale. Bought in September 2011. Excellent sound, comfortable. Includes carrying pouch and extension cable Technical details Cable / Plug-1.4 m single-sided OFC cable with gold-plated, straight 3.5 mm plug,1.6 m extension cable Gold-plated 6.3 mm adaptor Frequency response-16 – 24,000 Hz THD-<0.1% (1 kHz / 100 dB) Impedance 32 Ω