Douk Audio 3.5mm Male to 2-Male RCA Audio Adapter Cable Stereo AUX to – doukaudio

HiFi Tube Bluetooth Preamp Receiver Balanced XLR/RCA Pre-Amplifier Headphone Amp : Electronics

Douk Audio HiFi 3.5mm Stereo Audio Cable Headphone Extension Cord Male– doukaudio

Nobsound Little Bear MC22 Mini 2-IN-2-OUT 3.5mm Stereo Audio Switcher Passive Speaker Headphone Manual Selector Splitter Box Audio Sharing (2-IN-2-OUT) : Electronics

Nobsound T3 Plus Mini Vacuum Tube Preamp MM / MC Phono Stage for Turntables Pre-Amplifier Desktop Headphone Amp - AliExpress

Douk Audio & Nobsound, Amplifier, Preamp, DAC, Audio switcher, vu meter

Abundant audio I/O interfaces: with 5 kinds of audio inputs (Bluetooth / PC-USB & U-disk / stereo RCA / coaxial / optical) and 3 kinds of audio output

Douk Audio M100 136W Mini Bluetooth 5.0 Power Amplifier, 2.0 Channel Hi-Fi Class D Amp, USB DAC, with 24bit/192kHz Coaxial/Optical Inputs, for Home

Douk Audio MC303 Passive 3-IN-3-OUT Male/Female XLR Balanced Audio Swi– doukaudio

all product– Page 3 – doukaudio

Douk Audio T4 PRO Vacuum Tube Phono Preamp, MM Turntable Preamplifier, GE5654 Hi-Fi Headphone Amp for Home Theater/Record Player/ Stereo Amplifier/Active Speaker : Electronics

all product– Page 3 – doukaudio

Douk Audio VU22 Dual Analog VU Meter Display DB Panel MIC+LINE Sound Level Meter (Black) : Industrial & Scientific

Super mini 4-in-3-out switch box: 3 AUX IN (1 * 3.5mm; 2 * RCA) & 1 Bluetooth IN to 3 OUT (1 * 3.5mm; 2 * RCA) Swith buttons for inputs and outputs;

Nobsound Little Bear MC403 Mini 4-IN-3-OUT Audio Selector Box 3.5mm / RCA/Bluetooth Switcher Speaker/Amplifier Selector Splitter Box Bluetooth 4.0