Here's a vintage BOSS pocket studio I used in the early 2000s for practice and tracking ideas. A very cool piece of pre Amp Sim technology that still holds its own. You can connect it to any external sound system with an AUX cable, making it a very handy practice amp as well. I kept the original packaging and sealed user manuals, making it a solid collector's piece.

The Boss Micro BR is an ultra-compact, pocket-sized digital multitrack recorder designed for musicians. The latest model (the BR-80) acts as a 3-in-1 portable studio: an 8-track recorder with 64 virtual tracks, an eBand practice jam station with backing tracks, and a live field recorder featuring a built-in stereo microphone.Multitrack Recording: Offers 8 playback tracks and 2 simultaneous recording tracks, supported by 64 total V-tracks for layering takes.Built-In Effects: Includes world-class COSM amp models, guitar/bass effects, vocal processors, and mastering tools.Jam & Practice Tools: Features a large library of rhythm patterns, a phrase trainer, and a center-cancel function for stripping out vocals or solos from existing MP3s.Media & Connectivity: Records directly to SD/SDHC cards and functions as a USB audio interface for seamless computer DAW integration.Portability: Powered by two AA batteries, USB bus power, or an optional AC adapter.