I ordered these adapters to test some RF gear. Before using the adapters in my testing I wanted to sweep the connectors to see their response at higher frequencies. The return loss started falling off at 1.1GHz and was what I consider unusable (for my purposes at least) at 1.4GHz with a RL of -11dB. The adapters work great at lower frequencies though (particularly good around 600MHz ± 200MHz). For the price you are getting a great product, and a professional connector would cost orders of magnitude more, so if you are not concerned with RF >1100MHz I would recommend buying these connectors.
Premium Fiber Optic Cable For Enhanced Audio Experience: CableDirect TOSLINK 25 Ft Audio Cable For Soundbars And Home Theaters
18 Review
GoPro HERO9 (CHDHX-901), 23.6MP, 5120x2160, 1720 mA, black
32 Review
Asiahorse 16AWG Pro Power Supply Sleeved Cable For Power Supply Extension Cable Wire Kit 1X24-PIN/ 2X8-PORT (4+4) M/B,3X8-PORT (6+2) PCI-E 30Cm Length With Combs(Dual EPS Black)
14 Review
GearIT 14/2 Speaker Wire (250Ft) - High-Quality 14AWG Gauge For Outdoor Use - Oxygen-Free Copper - CL3 CL2 Rated - 2 Conductors - Black
22 Review