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tanzd posted on r/guitar1w
If cost is not an issue, an elegant solution would be to get this:https://www.sweetwater.com/store/detail/BTTotalMKII--alto-bluetooth-total-mkii-bluetooth-audio-adapter Plug into the Mic INPUT, select LINE level, stream music from your phone via Bluetooth. Or if you are not going to be moving the amp much, a more static solution that avoids having to charge the bluetooth receiver battery would be this, which plugs into the RCA input at the back as well (requires to be plugged into the wall).https://www.amazon.com/dp/B00IQBSW28