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I got some Extra bass Sony 950 headphones and made a cheap very enlightening learning experience I tried buying A adaptor for my Sony stereo AV receiver that hat has volume control to headphone headphone Jack. Geeze the difference in quality in sound off my CD player out do does all quality phone lap tops desk top computers in clean low distorted sound CD's and recevers should have come back after this test drive and listen for yourself Last i bought a 20 ft. Bose extension cord off amazon as well as $3 adaptor there too

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