Product Description: Upgraded Copper Dual Operational Amplifier Module for Audiophile Sound Systems Multifunctional Use This operational amplifier is designed for a wide range of applications, making it ideal for audiophile-grade sound amplifiers, preamps, CDs, amps, DAC output buffers, low pass filters, and buffers. It is also suitable for precise instruments, fast data acquisition, DAC output amplification, and photoelectric applications, providing versatility and high performance in various audio and technical setups. New and Upgraded Version Experience superior audio quality with this dual operational amplifier, featuring a clean sound base and a natural sense of hearing. It offers high resolution and dynamic sound with deep low-frequency dive, full mid-frequency, and warm, round, sweet vocals. The high frequencies are transparent, delicate, and supple, ensuring an immersive and enjoyable listening experience. Wide Range of Voltage Applications The dual operational amplifier module operates efficiently across a wide voltage range, from ±4V to ±18V. It supports a larger output current, with a maximum output of 50MA compared to the typical 40MA of general op amps, providing robust performance and reliability in demanding audio environments. Perfect Match for Marantz HDAM Circuit This operational amplifier is based on the Marantz HDAM circuit, ensuring a perfect match for high-quality audio systems. The input features the warmest FET precise pairing, and the operational amplifier board is designed with a large bottom area similar to that of dual operational amplifiers, enhancing its compatibility and performance. Excellent Sound Quality With no relatively low open loop gain, this sound operational amplifier eliminates the need for deep negative feedback, resulting in a more natural and delicate sound output. It delivers a comfortable and authentic audio experience, making it a perfect choice for audiophiles seeking superior sound quality. Upgrade your audio system with this high-performance dual operational amplifier module and enjoy enhanced sound clarity and depth. Perfect for those who demand the best in audio fidelity and precision.