BUY UPC154A https://www.utsource.net/itm/p/1924068.html
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The UPC154A is an 8-pin integrated circuit (IC) manufactured by NEC. It is a dual operational amplifier designed for use in audio and general-purpose applications. The UPC154A features a wide range of operating voltage (±2V to ±18V) and a low noise figure of 5.5nV/√Hz. It also has a high slew rate of 13V/μs, a low distortion of 0.0008%, and a low quiescent current of 4.5mA. The UPC154A is suitable for use in audio preamplifiers, audio power amplifiers, signal conditioning, and other general-purpose applications. It is also used in active filters, signal generators, and oscillators. (For reference only)