Check the listing for details. Coolaudio V571D (NE571 SA571 eqv) Audio Compresser/Expander. Condition: New. Listed at 6.67 USD. V571D V571 571 DIP Coolaudio V571D Audio Compressor/Expander (DIL-16) The Coolaudio V571 (a replacement for the NE571 and SA571) is a versatile low cost dual gain control circuit in which either channel may be used as a dynamic range compressor or expandor. Each channel has a full-wave rectifier to detect the average value of the signal, a linerarized temperature-compensated variable gain cell, and an operational amplifier. The V571 is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receivers and audio systems. Features: Complete compressor and expander in one package Temperature compensated Greater than 110dB dynamic range Operates down to 6VDC System levels adjustable with external components Distortion may be trimmed out Package: DIL-16 (Also available in an SOP-16 package) ✔ RoHS Compliant Compatible* Replacement PartsSKUProductPkgMfg V571MAudio Compressor/ExpanderSOP-16WCoolaudio AS571-SMTAudio Compressor/ExpanderSOIC-16ALFA RPAR SA571DAudio Compressor/ExpanderSOP-16WOnSemi Related ProductsSKUProductPkgMfg V575MLow Voltage Precision CompanderSOP-20WCoolaudio This item is in stock and ships from our US location. Note if you purchase multiple items from us on Ebay, you must use the Shopping Cart to combine the shipping costs. Cabintech Global LLC is an authorized distributor of Coolaudio, ALFA RPAR, Xvive, and other manufacturers. (*) Products listed as "Compatible" have the same circuit functionality as this product. However they may have some variation in electrical characteristics - check datasheets to verify compatibility in your circuit design. Some may also have different physical packaging requiring adapters or PCB design changes.