B4
Adult Studio / VIP4K Network Brand
Black 4K
Black-performer-focused 4K adult studio within the VIP4K network, sharing membership, support and affiliate infrastructure with numerous related brands.
Studio profile
Swap4k
Swap4k is an adult membership studio in the Effective Cash portfolio. Effective Cash lists the exact brand among its network properties and promotes exclusive 4K production.
About
About Swap4k
Swap4k is a dedicated adult web studio in the large Effective Cash paysite portfolio.
Effective Cash's first-party affiliate site lists Swap4k among its specialty properties and states that its sites are built around exclusive 4K content.
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M4
Mature Adult Studio / VIP4K Network Brand
Mature 4k
Mature-focused 4K adult studio in the VIP4K network, sharing membership and support infrastructure with Black4K, Tutor4K and other related brands.
PI
Adult 4K Membership Site
Pie4K
4K adult membership site launched around 2021 and currently listed as part of the shared Help4K and VIP4K network of high-resolution studio properties.
T4
Adult Studio / VIP4K Network Brand
Tutor 4k
Tutor-role-play 4K adult studio in the VIP4K network, active since 2019 and distributed through shared VIP4K membership infrastructure.