Segnaliamo l’interessante prodotto Tubecore “Duo” wireless media-streaming speaker con un Raspberry Pi e Udoo SBC, Bluetooth e WiFi, un 48v Class A analog-tube preamplificatore.

“The Duo stands out with its 48v Class A Preamp, which runs all audio through analog vacuum tubes to produce “rich bass, warm mids, and crystal clear highs,” according to Tubecore. The default preamp is an Electro-Harmonix ECC82/12AU7 with >100dB (20Hz to 20kHz) dynamic range and 10Hz to 20kHz (+0/-1dB) frequency response.”