The evidence provided for this claim is entirely irrelevant, referencing topics like 'Poonch' and 'Lee de Forest's Audion' vacuum tube, not Audion the adtech company's funding. No current evidence corroborates the $15 million Series B raise or U.S. expansion for the adtech company.

Two web search results mention Audion analyzing audio and video platforms, and one mentions optimizing ads across Spotify, YouTube & podcasts. However, none of the provided evidence specifies the exact metric of '500,000 hours of audio and video content per week' or confirms the company size (50-person).

The web search results confirm Audion's focus on performance and outcomes, but none of the provided evidence explicitly states that the platform integrates with third-party measurement providers to track 'conversions, store visits, and brand lifts' as a complete feature set.

While the evidence confirms the existence of some listed companies (e.g., Universal Pictures, adidas), there is no evidence provided that confirms the entire list of clients (Apple, Samsung, Uber, Audi, Ikea, L'Oréal, Paramount Pictures, Universal Pictures, Nike, and Adidas) belong to Audion.

The evidence contains general funding information for Audion, but it does not corroborate the specific details of the funding rounds (third round, 2019, 2022) or the total amount ($22.6 million) mentioned in the claim. The web search result only mentions a total funding amount was obfuscated.

The evidence provided for this claim is entirely irrelevant, referencing unrelated funding rounds for other companies (Atlys, Mahaveer Finance, Jupiter) and general Wikipedia entries, and does not mention Founders Future, Elevation Capital, or the Series A leadership roles for Audion.