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Quad op‑amp with JFET inputs, ideal for filters, buffers and audio stages in vintage synthesizers and drum machines. Stable performance, wide voltage range, and low noise.
The TL084 is a quad operational amplifier with high input impedance and low bias current, commonly used in analog signal paths. It’s fully compatible with DIP‑14 circuits designed for quad JFET op‑amps, and can directly replace models like the TL074 or TL064.
This IC is found in various vintage instruments, including:
Ensoniq SQ‑80
Synton Syrinx
Oberheim OB‑8
Sequential Multi‑Trak
E‑mu Drumulator
Ensoniq Mirage DSK‑1
It is typically used in voltage-controlled filters, VCAs, preamps and buffers—ensuring clean signal processing and stable operation in complex analog paths.