Brand: Akai
I can provide information about the akai as-8100. This is an older keyboard released by akai in the late 1990s. It features 81 studio-grade synthesizer voices, including two multimode analog-modeling filters for each voice, as well as digital effects and lots of programmability. It also has a built-in sequencer and arranger that allows for the quick creation of entire songs, with options for automatic accompaniment, style selection, and melody generation. The keyboard has a sleek and compact design, making it easy to transport. Overall, it's a versatile and powerful synthesizer that's still popular among musicians today.