Sennheiser MB Quart Quart Dual DK 700 Sennheiser RS Drake Headset AKG K-1000 MB Quart K 600 MB Quart Quart AKG Hearo 999 Stax SR Lambda Telefunken TH Philips SBC AH AKG Hearo 888 Toshiba HR-50 Stax SR-80 Pro Beyerdynamic Philips WH-200 Magnat Stax ED-5 Audio-Technica Stax SR Lambda Sennheiser AKG K-260 Tandberg Stax SR-44 Micro Seiki Sennheiser RS Jecklin Float AKG K-501 Sony MDR CD 750 Stax SRS-3050 Audio-Technica Stax SRD-6 SB Stax SRD-6 SB Beyerdynamic AKG Hearo 777 AKG K-500 Stax Lambda Stax SRD-7 Beyerdynamic ET Jecklin Float Stax SR-009 AKG K-205 UHF Beyerdynamic Stax SR-60 Stax SR Lambda