Upgrading older hi-fi systems to support modern audio formats like Bluetooth or Wi-Fi can enhance their usability and sound quality. Many traditional setups rely on physical media such as CDs or vinyl records, but adding Bluetooth receivers or Wi-Fi-enabled devices allows them to play music from streaming services. This modernization makes older equipment more compatible with current technology and user preferences. The Amazon Echo Dot, available in the 5th generation (2022) and the newer Echo Dot Max (2025), has moved away from including a 3.5 mm jack. To connect it to a hi-fi system or amplifier, users need a Bluetooth receiver. This setup allows voice control via Alexa, enabling playback from music streaming services. The Echo Dot is praised for its affordability, ease of setup, and seamless integration with the Alexa assistant. For Sonos users, the Sonos Port provides a way to integrate Sonos features into any audio device with an RCA jack or coaxial digital input. It includes RCA and coaxial audio outputs, Ethernet connectors, and a 12 V switch for automatically powering compatible devices. An RCA input allows connection of a pre-amplified vinyl turntable, which can be transmitted to other Sonos speakers. The Sonos Port is controlled via the Sonos app or AirPlay 2 from Apple devices and connects via Wi-Fi or Ethernet. It does not support Bluetooth and is priced at around 439 euros. For a simpler Bluetooth solution, the Logitech wireless audio receiver is recommended. It offers a headphone jack and RCA connectors, with Bluetooth 3.0 and a range of about 15 meters. It can pair with two devices simultaneously and is priced between 25 to 30 euros. While Bluetooth is less ideal for sound quality and range compared to Wi-Fi, it is a practical option for those without a Wi-Fi network.