The Lang Electronics PEQ-2 is a high-quality, solid-state passive program equalizer that has been revived by Heritage Audio. Originally developed in the 1960s, the PEQ-2 is renowned for its versatility and musicality, offering a sharper, tighter response compared to other vintage equalizers. The PEQ-2’s design is based on the Western Electric patent, similar to the Pultec EQP-1A, but with extended functionality and sound-shaping possibilities. Its ability to boost and cut at different frequencies provides a unique equalized response curve, making it a valuable tool for audio professionals seeking precise and musical tonal adjustments.