>>402
Peterson Stomp Classic
https://www.petersontuners.com/products/stompclassic/
>Concert A Range: 390Hz to 490Hz


Sonic Research ST-300 / ST-300mini
https://www.turbo-tuner.com/pages/manual-st300fs.htm
https://www.turbo-tuner.com/pages/manual-st3m.htm
>A4 range is 300.0 to 599.9 Hz