Amazon.com: Philips Over Ear Wired Stereo Headphones for Podcasts, Studio Monitoring and Recording Headset for Computer, Keyboard and Guitar with 6.3 mm (1/4") Add On Adapter- Silver : Electronics
Philips SHP2500 - The Ultimate Mod | Headphone Reviews and Discussion - Head-Fi.org
Philips SHP2500 headphone unboxing + sound dB test - YouTube
Philips SHP2500/10 HiFi TV Headphones with Cable Silver/Black & Goobay 50442 Audio Cable Jack 3.5 mm to RCA Adapter, 3.5 mm AUX Socket, 1.4 m: Amazon.de: Electronics & Photo