DIA-100 mkII

About the DIA-100 mkII

The Acurus DIA-100 mkII is a stereo integrated amplifier known for its clean, powerful sound and excellent build quality. It delivers 100 watts per channel into 8 ohms with a total harmonic distortion of 0.09%. The amplifier features a passive preamp section with volume, balance, source selector, and tape monitor controls, but no phono stage or tone controls, preserving signal purity. Internally, it uses a large toroidal transformer and high-quality components, including Toshiba bipolar output devices. The design emphasizes a high gain stage and high sensitivity to drive speakers effectively. The sound character is noted for a slightly bright treble but very smooth top end, strong and deep bass, and focused imaging. It can drive demanding speakers to loud volumes without strain. The amplifier has a robust build with a brushed metal faceplate and gold-plated RCA inputs, and speaker binding posts accept various connectors. It lacks remote control and digital inputs but is praised for its sound quality at its price point. The The unit weighs about 32 lbs and operates on 120V power. It is considered a solid Class B rated amplifier in its category and remains a sought-after model for audiophiles valuing sound purity and power.