The $329.99 Marshall Middleton II builds on the strengths of its well-regarded predecessor, offering clearer stereo sound, improved battery life, and enhanced functionality. Design: The Classic Marshall LookThe Middleton II adheres to the classic Marshall design, first exemplified in its guitar amps. (Credit: Christian de Looper)The Middleton II connects via Bluetooth 5.3 and supports the AAC, LC3, and SBC codecs. App: All of the Essentials and an EQThe Middleton II works with the Marshall Bluetooth app (available for Android and iOS). The Middleton II features a microphone on the top panel, allowing you to use the speaker for phone calls.