Initially sold for ¥15,800
The Yamaha MM10 is a light and affordable portable mixer that can also run on batteries. It's part of Yamaha's Producer Series. It has 4 input channels, each one with a mic or line selector, a volume control and a pan pot. No EQ, not even a basic one is provided. There's an additional input with its own volume control called AUX that is dedicated to bands playing with a precomposed base. Everything is finally mixed into a stereo output.
This pairs nicely with one or more MA10 amplifiers and since it runs on batteries there's apparently no noise added into the mix. An alternative black version was also available.