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

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

Bluetooth can also have good sound quality -- Fiio BTR3K Bluetooth Headset Amplifier-FIIO---BORN FOR MUSIC

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FiiO BTR3K] Balanced High-Fidelity Bluetooth Amp(Questionnaire About Upgrading the BTR3K updated in 2023-6-14)

FiiO BTR3 HiFi Bluetooth Receiver&USB DAC aptX/aptX HD/aptX LL/LDAC/AAC/HWA Support, for Home TV,Speaker,Car Stereo, NFC Pairing, Type C Port and 3.5mm Out, AK4376A 192K/24B DAC chip : Electronics

Bluetooth receiver FiiO BTR3K review — moving towards the 'five' - Porta Fi

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

FiiO BTR3K] Balanced High-Fidelity Bluetooth Amp(Questionnaire About Upgrading the BTR3K updated in 2023-6-14), Page 26

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FiiO releases the new firmware 1.2 for BTR3, new added EQ function!-FIIO---BORN FOR MUSIC

FiiO BTR3K] Balanced High-Fidelity Bluetooth Amp(Questionnaire About Upgrading the BTR3K updated in 2023-6-14), Page 9

Bluetooth can also have good sound quality -- Fiio BTR3K Bluetooth Headset Amplifier-FIIO---BORN FOR MUSIC