A:If the VOL20’s blue light is solid instead of flashing, it's connected to another device. Delete the VOL20 from any previously paired devices, then try connecting again from your computer. Q: Which devices are compatible with the VOL20?.
eBay
Mini Low Noise Volume Controller Volume Device Passive Preamp Active Speaker Volume Controller
Aliexpress UK
MV-01 only can be used as a volume controller. Nobsound MV-01 volume controller, the base adopts solid aluminum alloy and CNC machined, high-precision sealed step potentiometer, 3.5mm I/O interface with gold-plated pins etc., control the volume from your audio device losslessly. Standard 3.5mm interface with stronger compatibility, 3.5mm IN can connect to tablet PC, computer, phone, audio player etc., and 3.5mm OUT connects to amplifiers, active speaker, headphone amplifiers, headphones etc.
eBay
USB Volume Control Knob Multimedia PC Computer Speaker Volume Controller Knob Support One-key Mute
Aliexpress UK
No driver is required, plug and play. 1 x USB Cable. Color: Black. Hi-quality Lo-price Leto Rosin from Austria for violin,viola,cello 603 resin a. Compatible Systems: for Window7 / 8/10 / XP/ Mac/ Linux/Vista.
eBay
New Car Amplifier Volume Regulator Speaker Bass Controller Audio 27.5cm Sound Amplifier Subwoofer
Aliexpress UK
Its sleek white gloss finish and silver 6-level dial make it a stylish and practical addition to any audio setup. Impedance: Suitable for 4, 6, or 8 ohm speakers. Faceplate Finish: White gloss.
eBay
ZEALOT S87 80W Portable Bluetooth Speaker High Volume Waterproof 16000mAh Wireless TWS Subwoofer
Aliexpress UK
MV-01 only can be used as a volume controller. Nobsound MV-01 volume controller, the base adopts solid aluminum alloy and CNC machined, high-precision sealed step potentiometer, 3.5mm I/O interface with gold-plated pins etc., control the volume from your audio device losslessly. Standard 3.5mm interface with stronger compatibility, 3.5mm IN can connect to tablet PC, computer, phone, audio player etc., and 3.5mm OUT connects to amplifiers, active speaker, headphone amplifiers, headphones etc.
eBay
Fosi Audio VOL20 Bluetooth Speaker Ainc Alloy Volume Controller knob Halo RGB Desktop Wireless Music
Aliexpress UK
Passive preamp with no gain: Designed without built-in gain, the passive preamp is suitable for connecting to HiFi PC sound card, DAC and CD players with high output signal, as well as active speakers and pure power amplifiers with high gain themselves. Lossless audio performance: Enjoy pristine audio quality without any coloration or distortion. With the only standard RCA input and output, and a simple volume knob, the design focuses on delivering the purest sound without unnecessary functions. .
eBay
ZEALOT-ZE01 120W Big Power Wireless TWS Subwoofer Bluetooth Speaker High Volume Waterproof Portable
Aliexpress UK
If you press the knob again, you can start playing. Compact and portable, it is easy to carry and use. No worry about others would accidentally touching the tuning knob. 1 Piece USB Cable. Interface: USB.
eBay
ZEALOT-ZE21 250W Big Power Wireless TWS Subwoofer Bluetooth Speaker High Volume Waterproof Portable
Aliexpress UK
USB: USB2.0 fully compatible. Headphone drive capability: 16~150 ohms. Support audio bit depth: 16/24bits. Due to the different lighting of the photos and differences in monitors, the pictures may not reflect the actual color of the object.
eBay
ZEALOT S97 80W Portable Bluetooth Speaker High Volume Waterproof 16000mAh Wireless TWS Subwoofer
Aliexpress UK