The Pioneer CS-901A is a floor-standing speaker system that was released in the late 1970s. It showcases an impressive design that blends aesthetics with sound quality, featuring a three-way configuration. The speaker is equipped with a 15-inch woofer for deep bass response, a 4-inch midrange driver for natural and clear vocal reproduction, and a 2-inch tweeter for extended high frequencies. The cabinet construction is solid, designed to minimize resonance and enhance sound clarity. It typically has a frequency response range from 20 Hz to 20 kHz, allowing it to reproduce a wide spectrum of audio. The nominal impedance is usually rated at 8 ohms, making it compatible with a variety of amplifiers. Power handling capacities can reach up to 200 watts, providing ample headroom for dynamic sound without distortion. The CS-901A also features adjustable treble and bass controls to tailor the sound to personal preference. Overall, the Pioneer CS-901A is appreciated for its robust performance and stylish appearance, making it suitable for both music listening and home theater applications.