I have a Blackstar Fly 3 that I modified with a more efficient 3 inch 4 ohm neodymium speaker, added a speaker out jack and and a set of Schaller strap lock buttons in case you'd busk using a guitar strap to wear the amp. Sounds better and louder with the speaker upgrade and I'm using the amp with a 12 inch Eminence Legend (Fender speaker) Great little amp.
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