Audio capacitor, Types of Aluminum Electrolytic Capacitors, low frequency signal

 UD Series 22 uF 35 V 105°C Ø5 x 5.8mm SMT Chip Aluminum Electrolytic Cap

https://www.futureelectronics.com/p/passives--capacitors--aluminum-electrolytic-capacitors/uud1v220mcl1gs-nichicon-4850608