And to finalize my soundboks 2 upgrade: a FiiO BTR3K external dac for better sound quality, 10 band EQ & bluetooth 5.0 (vs 3.0 built-in). Paired with a Kript HiFi Ground Loop

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CSR8675 Bluetooth 5.0 receiver designed to deliver studio-quality sound through your ears WIRELESS - using your existing wired headphones, earphones

FiiO BTR3K Receiver Amplifier Bluetooth Headphone Amp High Resolution Support aptX HD/aptX LL/LDAC for Car Audio/Home TV/Speaker/Smartphones/PC

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FiiO BTR3K Review – A Glimpse Into Portable Audio Excellence - Home Studio Basics

FiiO BTR3K DAC/AMP Review » MOONSTAR Reviews

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CSR8675 Bluetooth 5.0 receiver designed to deliver studio-quality sound through your ears WIRELESS - using your existing wired headphones, earphones

FiiO BTR3K Receiver Amplifier Bluetooth Headphone Amp High Resolution Support aptX HD/aptX LL/LDAC for Car Audio/Home TV/Speaker/Smartphones/PC