Sonos CONNECT:AMP Gen 1 (ZonePlayer ZP120) — Streaming Amp, S1 App Only
It’s compatible with theSonos S1 app only (not S2), so ideal if you’ve got other legacy Sonos gear or want a budget setup. Supports many audio formats (MP3, AAC, FLAC, WAV, AIFF, Ogg Vorbis, etc.) from networked sources and services.