| Part Number | Specifications | Producent | Unit Price |
| THEPLUGG | Koss THE PLUG green (24 months) | Koss |
12,72 EUR |
| KE5K | KOSS KE5K black (Lifetime Warranty) | Koss |
5,72 EUR |
| THEPLUGR | Koss THE PLUG red (24 months) | Koss |
12,22 EUR |
| KTX/8 | Koss KTX/8 (Lifetime) | Koss |
12,46 EUR |
| PRO/35 | Koss PRO/35 (24 months) | Koss |
14,01 EUR |
| PORTA PRO | KOSS Porta Pro (24 month warranty) | Koss |
21,82 EUR |
| RUK40B | Koss RUK/40B | Koss |
13,11 EUR |
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