Korg EC150 User Manual page 11

Powerful integrated amplification. EC150 includes a powerful, 25 + 25 Watt
amplier, with two dual-cone 13cm speakers.
Audio inputs. The audio inputs allows you to directly connect an external mono or
stereo audio source, without the need of a mixer.
Two sets of heaphones. You can connect two stereo headphones, to play with
your teacher or another musician.
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Introduction