Yamaha A-S1100SL 2 Channel Integrated Amplifier (Silver) 90 W + 90 W (8 ohms, 20 Hz - 20 kHz, 0.07% THD) Unique floating and balanced power amplifier utilizing MOSFETs to deliver powerful, highly-dynamic sound filled with energy Large capacity power supply with a symmetrical amplifier layout to deliver energetic, dynamic sound with a fast response Discretely configured Phono amp Level meters visually reflect the dynamics in the music (peak / VU)