power adapter

I can’t believe I just found this after 5 years and thousands of AA batteries... figured I’d share the idea, works great Lenink AA Battery Power Supply Adapter,Replace 3 AA Battery,White https://www.amazon.com/dp/B082W37Z8K/ref=cm_sw_r_cp_api_fabt1_upjRFbAHEWTVR?_encoding=UTF8&psc=1

I just bought a used Realistic Pro-2006 with no power cord / adapter. Where can I find a replacement?