Output: 270W + 270W (8ohms). Key control:±2 notes (change in semitone steps, 9 steps are available). The effect depends on the sound source. Power supply: AC 100V 50Hz/60Hz. Size:43(W) x 8.9(H) x 33.4(D) cm. Weight: 5.7 kg. All my products are 100% Authentic. International Buyers – Please Note. I do not mark merchandise values below value or mark items as “gifts” – US and International government regulations prohibit such behavior. Thank you for your understanding.