Low ESR High Reflow Electrolytic, audio grade, electrolytic capacitor

 EEE-FP Series 25 V 220 uF Ø 8 x 10.2 mm 105 °C 

https://www.futureelectronics.com/p/passives--capacitors--aluminum-electrolytic-capacitors/eee-fp1e221ap-panasonic-4029001