Op-amp (operational amplifier)
An op-amp is a general-purpose analog gain stage used inside DACs, preamps, and headphone amps. In hi-fi, op-amp rolling (swapping the chip for a different model) is a popular DIY upgrade path - can subtly change sound signature.
An op-amp (operational amplifier) is an integrated circuit that provides analog gain. Used throughout hi-fi gear: DAC output stages, preamp buffers, headphone amp gain stages, subwoofer crossovers.
Op-amp rolling
Many higher-quality DACs and preamps use socketed op-amps that can be swapped without soldering. This is called “op-amp rolling” – swap the stock IC for a premium alternative to change sound signature.
Popular audiophile op-amps
- OPA1612 – Texas Instruments, low noise, neutral
- MUSES 01/02/03 – Nichicon, warmer, “musical”
- Burson V6/V7 Vivid Dual – discrete op-amp modules, expensive, popular high-end swap
- Sparkos 3602 – premium discrete, similar niche
Where it applies
The AIYIMA A80 has swappable op-amps (NE5532P stock). Owners upgrading to Burson V7 Vivid Dual report noticeable improvements in stage width and detail.
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