The Eye See ’78 from the crew at Wren & Cuff delivers on a vintage-inspired op-amp design full of wooly vintage tones. This big-box version not only delivers the classic V4 circuit, but like the original Eye See there is a V5 tone bypass switch for removing the tone stack resulting in a mid-bump, volume boost, and a significantly more raw and open sound. A great sounding example of the op-amp circuit.