What Is the OPA2134? Audiophile Audio Op-Amp and Uses
The OPA2134 is a JFET-input, very-low-noise and low-distortion dual-channel audiophile audio op-amp. It is preferred in hi-fi preamps, DAC output stages and high-quality active filters. Its single-channel version is the OPA134. Its measurable advantage is low distortion/noise; part of the 'sound changes' claim is subjective. It is not rail-to-rail.
The OPA2134 is a JFET-input, very-low-noise and low-distortion dual-channel audiophile audio op-amp. It is preferred in hi-fi preamps, DAC output stages and active filters aiming for high sound quality. For the concept, see what is an op-amp.
What is the OPA2134 used for?
Hi-fi preamps, DAC I/V and output buffers, active crossovers and high-quality active filters. Its JFET input reads high-impedance sources cleanly; its low distortion is used for "transparent" sound.
Specifications
| Parameter | Value |
|---|---|
| Type | Dual JFET audiophile op-amp |
| Highlight | Very low distortion/noise |
| Supply | ±2.5 – ±18 V |
| Package | DIP-8 / SOIC-8 |
Watch out
Its single-channel version is the OPA134 (the single member of the family). It is not rail-to-rail. Claims that "swapping the op-amp changes the sound" are often subjective; the measurable difference is usually in distortion/noise parameters. The pinout is compatible with a standard dual op-amp.
Equivalents
- OPA134: the single-channel sibling.
- NE5532: a classic low-noise audio op-amp.
- LM4562 / OPA1642: modern high-performance audio op-amps.
Find it in our catalog
Use the OPA2134 search.