Orders placed after 4pm on weekdays will not ship until the next business day. Orders placed after 12pm Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enter new zip code to refresh estimated delivery time.
The Lindell Audio Vintage OPA - Melcor 1731 Style Opamp is a pin-compatible plug-and-play operational amplifier designed to work with the Lindell Audio 500 series 6X-500 Microphone Preamplifier, 7X-500 Compressor/Limiter, and PEX-500 Rev.2 Pultec-inspired passive equalizer. It is also designed to work with the Lindell Audio 18XS MKII single-channel microphone preamplifier, DI, line amplifier, and passive Pultec equalizer. The opamp provides a smooth and punchy sound when installed into your compatible Lindell Audio lunchbox or rack equipment.