what bass equipment was used on this is why paramore?

Paramore’s “This Is Why” doesn’t have a single, officially confirmed bass rig widely documented in the results I found, but the most relevant gear clue points to a Fender-style Precision bass being used for cover/playalong setups, with other players also dialing in the song with standard E tuning and modern DI/amp-sim processing.

What’s likely on the track

• A clean, punchy bass tone with enough midrange to stay present in the mix.

• Standard EADG tuning is used in the bass cover references I found.

• The sound is consistent with a P-bass-type instrument or a similarly voiced bass rather than a heavily effected rig.

Gear references that surfaced

Source| Bass equipment mentioned
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A bass cover of “This Is Why”| L’s TRUST bass, Gallistrings MSB45105 strings, Lindy Fralin 4-string Jazz Bass pickups, Gotoh Res-O-Lite GB528 tuners, Gotoh 404B0-C bridge, Master 8 pick, Neural DSP processing 2
Another bass cover reference| Fender Player Precision (left-handed), Focusrite Scarlett 2i2, Reaper, Amplitube 4, Guitar Pro 6 3

Best takeaway

If you’re trying to copy the bass sound, start with a Precision-bass-style instrument , fresh roundwound or medium-gauge strings, and a clean DI or light amp-sim chain with only mild compression. That will get you much closer than chasing a complicated effects setup.

TL;DR: The most useful public references point toward a P-bass-style setup in E standard , with a straightforward clean tone and light studio processing.