Korpa 
This compact, powerful 1x12 combo includes 48V phantom power, feedback control and phase reverse. There are two channels (one of which accepts a mic input) so you can use two pickups, two instruments, or an instrument and a microphone! With no tweeter, the AC 121 is best for bass!
Markacoustic amps and combos are designed for all acoustic instruments including acoustic bass, acoustic guitar, mandolin, violin, cello, banjo, etc.
Markacoustic amps/combos are manufactured to be sold and used in the country of purchase, and they are factory preset to that country’s voltage. Due to homologation issues, the voltage may not be changed.
Markacoustic amps/combos are manufactured to be sold and used in the country of purchase, and they are factory preset to that country’s voltage. Due to homologation issues, the voltage may not be changed.
For more detailed specs on the amplifier in this combo, please see the AH 250 page.