Headphone Burn In Times.

Looking on the web, I found the following suggested headphone burn-in times. Not my opinion, but for reference purposes only:

1. AKG K271Studio 320 hours before serious listening
2. AKG K181DJ 50 hours before serious listening
3. AKG K324P 150 hours before serious listening
4. AKG K412P 540 hours before serious listening
5. AKG K414P 175 hours before serious listening
6. AKG K416P 180 hours before serious listening
7. AKG K518DJ 200 hours before serious listening
8. AKG K701 439 hours before serious listening

9. Audio-Technica ATH-CK7 500 hours before serious listening
10. Audio-Technica ATH-CM7Ti 683 hours before serious listening
11. Audio-Technica ATH-EC700 101 hours before serious listening
12. Audio-Technica ATH-EM9r 100 hours before serious listening
13. Audio-Technica ATH-EW9 100 hours before serious listening
14. Audio-Technica ATH-PRO700 120 hours before serious listening
15. Audio-Technica ATH-W5000 100 hours before serious listening

16. BeyerDynamic DT 231 Galactic 100 hours before serious listening
17. BeyerDynamic DT 235 175 hours before serious listening
18. BeyerDynamic DT 770 M 100 hours before serious listening
19. BeyerDynamic DT 770 PRO 175 hours before serious listening
20. BeyerDynamic DT 860 1100 hours before serious listening
21. BeyerDynamic DT 880 PRO 200 hours before serious listening

22. Denon AH-C551K 375 hours before serious listening
23. Denon AH-C700 100 hours before serious listening
24. Denon AH-D1001 100 hours before serious listening

25. Etymotic ER-4S 100 hours before serious listening

26. GRADO Alessandro MS One 160 hours before serious listening
27. GRADO Alessandro MS Pro 180 hours before serious listening
28. GRADO Alessandro MS Two 200 hours before serious listening
29. GRADO GS 1000 625 hours before serious listening
30. GRADO iGrado 50 hours before serious listening
31. GRADO SR 325i 190 hours before serious listening
32. GRADO SR 60 100 hours before serious listening
33. GRADO SR 80 150 hours before serious listening

34. KOSS MV1 500 hours before serious listening
35. KOSS PORTAPRO 400 hours before serious listening
36. KOSS PRO4AAAT 400 hours before serious listening
37. KOSS QZ99 200 hours before serious listening
38. KOSS UR20 50 hours before serious listening
39. KOSS UR40 100 hours before serious listening

40. Sennheiser CX300 30 hours before serious listening
41. Sennheiser CX500 170 hours before serious listening
42. Sennheiser HD201 50 hours before serious listening
43. Sennheiser HD205 200 hours before serious listening
44. Sennheiser HD215 700 hours before serious listening
45. Sennheiser HD280 pro 200 hours before serious listening
46. Sennheiser HD435 250 hours before serious listening
47. Sennheiser HD457 100 hours before serious listening
48. Sennheiser HD515 150 hours before serious listening
49. Sennheiser HD555 150 hours before serious listening
50. Sennheiser HD580 300 hours before serious listening
51. Sennheiser HD595 150 hours before serious lsitening
52. Sennheiser HD600 260 hours before serious listening
53. Sennheiser HD650 250 hours before serious listening
54. Sennheiser MX560-B 30 hours before serious listening
55. Sennheiser PX100 500 hours before serious listening
56. Sennheiser PX200 220 hours before serious listening
57. Sennheiser PXC300 740 hours before serious listening
58. Sennheiser PXC350 400 hours before serious listening

59. Shure E2c 50 hours before serious listening
60. Shure E3c 100 hours before serious listening
61. Shure E4c 1000 hours before serious listening
62. Shure E500PTH/SE530 500 hours before serious listening

63. Sony MDR-D777 350 hours before serious listening
64. Sony MDR-EX90LP 170 hours before serious listening
65. Sony MDR-NC22 40 hours before serious listening
66. Sony MDR-SA5000 300 hours before serious listening
67. Sony MDR-V700DJ 50 hours before serious listening
68. Sony MDR-V900HD 370 hours before serious listening
69. Sony MDR-XD400 1000 hours before serious listening

70. Ultimate Ears super.fi 3 studio 200 hours before serious listening
71. Ultimate Ears super.fi 5 pro 560 hours before serious listening
72. Ultimate Ears triple.fi 10 pro 650 hours before serious listening

73. WESTONE UM1 60 hours before serious listening
74. WESTONE UM2 90 hours before serious listening
75. WESTONE Westone 3 240 hours before serious listening

For burn in I use the XLO burn in CD.