1. Who Can Apply
The program is open to FPS gamers and desktop gaming enthusiasts residing worldwide. Complete the application form on this page. Fosi Audio will review all applications and contact selected testers directly.
2. How It Works
Selected testers will receive one Fosi Audio C3 Gaming DAC/AMP with shipping covered by Fosi Audio. Existing C3 owners can participate using the C3 they already own.
Within 15 days of receiving the C3, testers must create and submit honest, original content about their real-world experience. Once Fosi Audio confirms that the content meets the program requirements, it must be published on the required platforms and remain publicly visible for at least three months.
Deleting, hiding, or restricting access to the content during this period may affect eligibility for future Fosi Audio programs.
3. Tester Rewards
- Applicants who do not already own a C3: Complete all requirements and keep the C3 for free.
- Existing C3 owners: Complete all requirements and choose either an Fosi Audio IM4 earbuds or DS3 DAC dongle as your reward.
4. Publishing Requirements
Content must be published on at least three platforms:
- Reddit：One relevant subreddit, such as r/Gaming_Headsets, r/headphones, r/FPS, r/DeltaForceGlobal, r/PUBATTLEGROUNDS, or another community related to the game you tested. Please review and follow each community’s rules before posting.
- Fosi Audio’s official Discord community： https://discord.gg/PtQBHKZhn7
- One additional platform, such as YouTube, Facebook, Steam, or another relevant social or gaming community
Posting on additional platforms is encouraged.
Please include the following hashtags or keywords:#FosiAudio #StepSense #FosiAudioC3
Fosi Audio welcomes both positive and critical feedback and will only review submissions for compliance with these program requirements—not to influence your opinions.
5. Content Requirements
Choose either of the following formats:
- Photo and text: At least four clear, original photos and 200 words of written content.
- Video: At least one minute long and must include real-world use or gameplay testing.
Your content may cover one or more of the following:
- FPS testing in CS2, PUBG, Delta Force, or Valorant, including footsteps, gunfire, environmental sounds, positioning, and distance perception
- StepSense™ on/off comparisons, including footstep detection, enemy positioning, distance perception, and separation from gunfire or explosions
- Comparisons with traditional EQ settings, other sound cards, or direct PC audio
- Using the C3 as a desktop gaming and music audio hub for headphones, speakers, and gaming consoles
- Headphone output power and performance with demanding gaming headsets
- AI microphone noise cancellation during voice chat, including keyboard and background noise reduction
6. Originality and Eligibility
All content must be original and based on your genuine experience. Copying or using another person’s content will result in immediate disqualification and exclusion from future testing programs.
