Nice looking amp and Eminance makes great speakers. Good to see someone using bigger speakers, not a fan of small speakers.
I just looked it up on parts express and it's listed for 15 bucks and a 8" celestion speaker next to it for 29 bucks.
I looked at the schematic and layout, it looks like many of the small guitar practice amps that you get when buying a starter package.
I have a 4watt guitar amp that I found on the side of the road that is similar with a First Act label on it. It works, just had a small 4" speaker that sounded like a**. People will throw them away or sell on ebay/craigslist when they get a better amp. They work fine, they just need a decent speaker. I converted mine for guitar or bass/acoustic use by putting the input capacitor on a 2-way switch with a .1uf cap on the other side for bass. I use another speaker for guitar and a subwoofer out of a home surround system for bass or acoustic wired on another 2-way switch. It works great with my CBG's and is loud enough in the music room for my bass.