September 28, 2020 sunpow Sony PHA-1, PHA-1A Headphone Amplifier Battery SP73 Part Number:CP-SP73 Type: Li-Ion Voltage: 3.7V Capacity: 1200mAh Replace Code: SP73 Compatible with Sony PHA-1, PHA-1A Share this: Click to share on Reddit (Opens in new window) Reddit TweetShare on Tumblr Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on Telegram (Opens in new window) Telegram Like Loading... Related