https://www.koss.com/bundles/black-friday-retro-bundle
$99.99 bundle:
- Koss Pro4AA Over-Ear Headphone
- Koss Porta Pro Limited Edition Rhythm Beige On-Ear Headphone
- Koss KPH30iRB On-Ear Headphone
https://www.koss.com/bundles/black-friday-audiophile-starter-bundle
$49.99 bundle:
- Koss Porta Pro Classic On-Ear Headphone
- Koss KPH30iK On-Ear Headphone
- Koss KSC75 Ear Clip Headphone