topic Control volume by a pre amp in iOS (iPhone, iPad)

topic Control volume by a pre amp in iOS (iPhone, iPad) https://community.spotify.com/t5/iOS-iPhone-iPad/Control-volume-by-a-pre-amp/m-p/5532349#M153188 <P>Hi. <BR />I’m new here. <BR />how can I control the volume by a pre amp ( using home Wi-Fi between iOS Spotify app and a pre amplifier)</P><P>thanks. </P><P><STRONG>Plan</STRONG></P><P>/Premium Duo</P><P><STRONG>Country</STRONG></P><P> </P><P><STRONG>Device</STRONG></P><P>(iPhone 13 pro max</P><P><STRONG>Operating System</STRONG></P><P>(iOS)</P><P> </P><P><STRONG>My Question or Issue</STRONG></P><P> </P> Sat, 01 Apr 2023 19:50:28 GMT Ronenza 2023-04-01T19:50:28Z Control volume by a pre amp https://community.spotify.com/t5/iOS-iPhone-iPad/Control-volume-by-a-pre-amp/m-p/5532349#M153188 <P>Hi. <BR />I’m new here. <BR />how can I control the volume by a pre amp ( using home Wi-Fi between iOS Spotify app and a pre amplifier)</P><P>thanks. </P><P><STRONG>Plan</STRONG></P><P>/Premium Duo</P><P><STRONG>Country</STRONG></P><P> </P><P><STRONG>Device</STRONG></P><P>(iPhone 13 pro max</P><P><STRONG>Operating System</STRONG></P><P>(iOS)</P><P> </P><P><STRONG>My Question or Issue</STRONG></P><P> </P> Sat, 01 Apr 2023 19:50:28 GMT https://community.spotify.com/t5/iOS-iPhone-iPad/Control-volume-by-a-pre-amp/m-p/5532349#M153188 Ronenza 2023-04-01T19:50:28Z