I got a JBL L16 on FB Marketplace. Beautiful speaker and sounds pretty good but the app doesn't appear to exist any longer and the JBL Portable app doesn't support this speaker.
JBL Authentics L16 | Three-way speaker system with wireless streaming
Amazon.com: AC Power Cord Cable for Harman JBL Authentics L16 Wireless BT Speaker Streaming : Electronics
JBL Authentics L16 | Three-way speaker system with wireless streaming