5K U.S Roasters Millennium with touch screen profiling system and wireless control. 240 VAC single phase and natural gas.
Link to fact sheet - http://usroastercorp.com/files/5kiloroasterspecsheet.pdf Water quench on drum and cyclone. Includes Class A dual wall vent pipe.
Purchased from US...
I do not consider myself an expert in roasting espresso, but I have tried many blends in my travels. When I find one I like, I try and ask what they use. I have found that the blend is typically 4 or 5 beans. One of my favorites:
Ethiopian
Papua New guinea
Brazil
Columbian
Someone I know received a gift of a small bag of green beans They asked me to roast, so I tried in my sample roaster. To say it was bad is not right. It was just very different and not for me. I realize the whole 'gift bag' might have been of questionable quality.