New Companion for Your Media Center
Built with a robust zinc alloy, VOL20 offers Bluetooth and USB connectivity. It features customizable RGB lighting, allowing adjustment to your own preference. Providing plug-and-play ease, it enhances your volume control experience.
- Connection Method: Bluetooth/USB
- Bluetooth Connection Range: =10m
- Lighting Modes: Constant Light Mode/Light Off Mode/Auto-Off after 5 Seconds of Inactivity/Spectrum Cycling
- Functions: Volume Up/Down; Previous Track/Next Track; Play/Pause; Mute/Unmute
Multimedia Volume Control Knob with Multi-Function
Instantly adjust the volume to significantly enhance your desktop experience.
Customizable RGB Lighting for More Vibes
Offers constant on(customizable color), off, auto-off after 5 seconds, and spectrum cycling modes.
CNC All-Metal Zinc Alloy
Guarantees texture and lasting durability while enhancing the weight and stability of the product.
Remote Volume Adjustment
Saves space and keeps desks tidy with up to 10-meter remote connections.
Infrequent Recharging Needed
Enjoy 15 hours of operation with lighting effects on and up to 500 hours with them off.
Which devices are compatible with the VOL20?
The VOL20 is compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers.
Can VOL20 be used with Apple TV?
VOL20 can be used with Apple TV, but the connected TV must support HDMI CEC functionality.
Can the VOL20 be used to control a DAC or amplifier?
VOL20 is primarily designed as a peripheral for audio source devices, requiring USB or Bluetooth peripheral support to function. Generally, DACs or amplifiers do not support this feature.
Why can't my computer detect the VOL20 in pairing mode?
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.
Why does the Bluetooth connection drop on PC reboot, even though it works perfectly when connected via cable?
Bluetooth reconnects automatically. If the USB is connected, it takes priority. Disconnect the USB cable to allow Bluetooth to reconnect.
Product Comparsion
 VOL20 |  K5 PRO |  PH05 |  SK01 |  SK02 |  DS1 |  DS2 | |
|---|---|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — | — | — |
Price | — | — | — | — | — | — | — |
Type | Volume Knob | DAC+Headphone Amp | Headphone Amp | Headphone Amplifier/Preamp | DAC+Headphone Amplifier/Preamp | DAC+Headphone Amp | DAC+Headphone Amp |
MAX Power Output | - | - | 310mW@32O | 2400mW@32O; 300mW@32O | 3.5mm: 280mW@32O | 120mW@32 Ohm; 220mW@32 Ohm | 120mW@32 Ohm(SE); 250mW@32 Ohm |
Input | Bluetooth + USB | USB-C+OPT+COA+3.5mm Microphone | 3.5mm AUX | 3.5mm line in | USB + Optical | Type C+ USB A | Type C+ USB A |
Output | - | RCA + 3.5mm Headphone | 3.5mm Headphone ×5 | 3.5mm/6.35mm headphone jack | 3.5/4.4mm Headphone/AUX/OPT | 3.5mm/ 4.4mm Headphone | 3.5mm/ 4.4mm Headphone |
Treble & Bass Control | ? | ? | ? | ? | ? | ? | ? |
THD | - | <0.003% | <0.001% | <0.001% | =0.001% | = 0.0006%(SE) = 0.001%(BAL) | <0.0001% |
SNR | - | >110dB | =105dB | =108dB | =120dB | =120dB | =130dB |
Terminating Impedance | - | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm |
Power Adapter | - | - | - | - | - | - | - |
Work Voltage | - | USB-C/DC5V | DC 12V/1A | USB-C/DC 5V | USB-C/DC 5V | - | - |
Amplifying Your Voice, Shaping Our Innovation
Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
Speaker Selector & Amplifiers
Headphone amp & Amplifiers
Amplifier Speaker Switch LC30
Bluetooth Amplifiers MC101
Bluetooth headphone amp N3
DAC K5 Pro
DAC Q4
Bluetooth Tube Amplifier T20X
New Companion for Your Media Center
Built with a robust zinc alloy, VOL20 offers Bluetooth and USB connectivity. It features customizable RGB lighting, allowing adjustment to your own preference. Providing plug-and-play ease, it enhances your volume control experience.
- Connection Method: Bluetooth/USB
- Bluetooth Connection Range: =10m
- Lighting Modes: Constant Light Mode/Light Off Mode/Auto-Off after 5 Seconds of Inactivity/Spectrum Cycling
- Functions: Volume Up/Down; Previous Track/Next Track; Play/Pause; Mute/Unmute
Multimedia Volume Control Knob with Multi-Function
Instantly adjust the volume to significantly enhance your desktop experience.
Customizable RGB Lighting for More Vibes
Offers constant on(customizable color), off, auto-off after 5 seconds, and spectrum cycling modes.
CNC All-Metal Zinc Alloy
Guarantees texture and lasting durability while enhancing the weight and stability of the product.
Remote Volume Adjustment
Saves space and keeps desks tidy with up to 10-meter remote connections.
Infrequent Recharging Needed
Enjoy 15 hours of operation with lighting effects on and up to 500 hours with them off.
Ease of Use
Change Chroma Effects and Switch Bluetooth Mode
The Volume On-the-Fly
Rotate the Dial to Your Preferred Volume Level.
Plug-and-Play with No Extra Drivers Needed
Enjoy smooth and precise volume control at your fingertips.
Non-Slip Pad& On/Off Switch
Ensures consistent, slip-free adjustments for optimal adjustment.
Which devices are compatible with the VOL20?
The VOL20 is compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers.
Can VOL20 be used with Apple TV?
VOL20 can be used with Apple TV, but the connected TV must support HDMI CEC functionality.
Can the VOL20 be used to control a DAC or amplifier?
VOL20 is primarily designed as a peripheral for audio source devices, requiring USB or Bluetooth peripheral support to function. Generally, DACs or amplifiers do not support this feature.
Why can't my computer detect the VOL20 in pairing mode?
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.
Why does the Bluetooth connection drop on PC reboot, even though it works perfectly when connected via cable?
Bluetooth reconnects automatically. If the USB is connected, it takes priority. Disconnect the USB cable to allow Bluetooth to reconnect.
Product Comparsion
VOL20 | K5 PRO | PH05 | SK01 | SK02 | DS1 | DS2 |
|---|---|---|---|---|---|---|
| Customer Reviews | ||||||
| — | — | — | — | — | — | — |
| Price | ||||||
| — | — | — | — | — | — | — |
| Type | ||||||
| Volume Knob | DAC+Headphone Amp | Headphone Amp | Headphone Amplifier/Preamp | DAC+Headphone Amplifier/Preamp | DAC+Headphone Amp | DAC+Headphone Amp |
| MAX Power Output | ||||||
| - | - | 310mW@32O | 2400mW@32O; 300mW@32O | 3.5mm: 280mW@32O | 120mW@32 Ohm; 220mW@32 Ohm | 120mW@32 Ohm(SE); 250mW@32 Ohm |
| Input | ||||||
| Bluetooth + USB | USB-C+OPT+COA+3.5mm Microphone | 3.5mm AUX | 3.5mm line in | USB + Optical | Type C+ USB A | Type C+ USB A |
| Output | ||||||
| - | RCA + 3.5mm Headphone | 3.5mm Headphone ×5 | 3.5mm/6.35mm headphone jack | 3.5/4.4mm Headphone/AUX/OPT | 3.5mm/ 4.4mm Headphone | 3.5mm/ 4.4mm Headphone |
| Treble & Bass Control | ||||||
| ? | ? | ? | ? | ? | ? | ? |
| THD | ||||||
| - | <0.003% | <0.001% | <0.001% | =0.001% | = 0.0006%(SE) = 0.001%(BAL) | <0.0001% |
| SNR | ||||||
| - | >110dB | =105dB | =108dB | =120dB | =120dB | =130dB |
| Terminating Impedance | ||||||
| - | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm |
| Power Adapter | ||||||
| - | - | - | - | - | - | - |
| Work Voltage | ||||||
| - | USB-C/DC5V | DC 12V/1A | USB-C/DC 5V | USB-C/DC 5V | - | - |
Amplifying Your Voice, Shaping Our Innovation
Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
Speaker Selector & Amplifiers
Headphone amp & Amplifiers
Amplifier Speaker Switch LC30
Bluetooth Amplifiers MC101
Bluetooth headphone amp N3
DAC K5 Pro
DAC Q4
Bluetooth Tube Amplifier T20X