Is it safe to plug guitar directly to portable (battery powered rechargeable) speaker - Music: Practice & Theory Stack Exchange
JBL Partybox 110 Powerful, portable party speaker with vivid light effects, Bluetooth connectivity, Mic/Guitar input and rechargeable battery, Black - Creative Audio
JBL EON ONE Compact | All-in-One Rechargeable Personal PA
JBL PartyBox 310 Portable Stereo Bluetooth Speaker with Built-in Microphone, Guitar input and Dynamic Lights | P.C. Richard & Son