Yamaha, with a long history of 125 years as a musical instrument maker, also has a high reputation for Hi Fi components. The A-S201 was created by taking advantage of this rich experience & high technological expertise. Based on the concept of " Natural Sound", for reproducing all music as it really sounds, & built with scrupulous care from circuit design to basic sound production, even though an entry model it reproduces high sound quality & musically rich sound. The A-S201, with 100W 2 high drive power that's above its class, has a high sound quality design that minimises the length of signal routes & optimises the circuit layout. Positioning the power transformer near the power amp circuit reduces power loss while improving peak power supply capacity to enable high volume output. The signal ground & power supply ground are connected at one point, eliminating mutual interference to achieve a higher S/N ratio. The result is sound filled with clarity & a feeling of openness. Engaging the Pure Direct Switch causes the audio signal to bypass the control circuits for bass & treble, balance & the back buffer amp. This improves sound quality while maintaining full output capacity. Shortening the signal route improves sound purity, helping to reproduce even the most delicate musical nuances. The A-S201 inherits the simple & sophisticated design style that Yamaha Hi Fi audio is famous for. With an elegant hair line finish, it harmonises beautifully with other Hi Fi audio equipment. The operating buttons & volume knobs also show our commitment to simplicity & ease of use.