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Precision Engineered
Audio Technology
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Precision Craftsmanship
Delivering 0.00045% THD+N for unparalleled audio fidelity and performance
Advanced Wireless Connectivity
Seamless communication through secure AuralSync™ mesh technology
Smart Control
Fully customizable with the LF Audio AuralSync™ mobile app for effortless management
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Explore Our Products
Next gen design, unrivaled features, superior performance
The most precise, fastest sampling, smartest wireless graphing voltmeters designed for both automotive and car audio enthusiasts.
Unrivaled wireless data telemetry and volume control products - the world's farthest reaching, lowest THD, highest quality bass knobs.
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The WVC-PRO (wireless volume controller pro) is our top of the line remote volume control and data telemetry solution designed for the most serious bassheads!
For less feature rich versions, please see the WVC-LITE and WVC.
A "wireless bass knob", voltmeter, and temperature meter all-in-one runs over a custom protocol on the 2.4ghz band (with dedicated 20.5dBm transmitter and 6dBi omnidirectional antenna) to give you long-range mission-critical style control over the volume of your system. The remote out line allows you to use the built in safety features to automatically turn off your amplifier if the voltage drops too low or the amp gets too hot.
You no longer have to endure the brunt of your monstrous ear-shattering system while giving demos. Step outside of your cabin and control your volume with this wireless knob!
Features
Wireless volume control |
Our encrypted, long-range, channel hopping AuralSync™ protocol enables you to wirelessly monitor and control your system from up to 500 feet away! |
Long Battery Life | Intelligent auto shut-off and power-saving modes ensure your bass knob can last for days between charges! The unit will restart within milliseconds to give you near instantaneous control after wakeup. |
Wireless Over The Air (OTA) firmware updates |
Receive new features wirelessly using built-in over-the-air (OTA) updates using the AuralSync ™ App. |
Full Range |
Flat frequency response and stable attenuation from 5hz to 30khz |
USB-C Charging |
Simply plug in the included USB-C cord into any USB outlet to charge your wireless knob |
High-Quality Aluminum Case |
High-quality, compact, and durable case keeps the base unit protected and cool to ensure years of reliable operation. |
15 Volt +/- RCA signal level support |
Serious bassheads may run high voltage RCA drivers / DSP's, which easily reach 15-volt peak-to-peak AC signal levels. Our controller reaches this level and adds even more overhead by supporting a full 15V +/- RCA line level! |
Intelligent Drive System® | Automatically throttle your volume when your voltage drops too low or your temp is too high (PRO only)Video |
Competition Mode | Automatically throttle your volume when your knob disconnects (battery dies, our of range, etc...)Video |
Line Driver | Amplify incoming RCA voltage by up to 35.5 db (15v max) to overcome signal limit of some headunitsVideo |
WVC-LITE vs WVC vs WVC-PRO comparison
WVC-LITE | WVC | WVC-PRO | |
Channel Options | 2 / 6 | 2 | 2 |
High quality anodized aluminum case | ✔️ | ✔️ | ✔️ |
Built-in Voltmeter | ✔️ | ✔️ | ✔️ |
AuralSync App Support (Bluetooth Data Streaming) | ✔️ | ✔️ | ✔️ |
OTA (Over-The-Air Firmware Updates | ✔️ | ✔️ | ✔️ |
Tiffany Style RCA connectors | ✔️ | ✔️ | ✔️ |
Gold Plated Tiffany Style RCA connectors | ❌ | ✔️ | ✔️ |
Performance Certification - full THD+N% testing of the specific unit | ❌ | ✔️ | ✔️ |
USB-A to USB-C Braided | ❌ | ✔️ | ✔️ |
High-Quality Foam Core Packaging Box | ❌ | ✔️ | ✔️ |
Can Connect to Other LF Audio Devices (HPPM, WTH, WDD, etc...) | ✔️ | ✔️ | ✔️ |
Intelligent Drive System® (Auto mute, limit volume) | 🟡 (voltage) |
🟡 (voltage) |
✔️ (voltage + temp) |
Amplifier Temperature Probe | ❌ | ❌ | ✔️ |
RCA Oscilloscope | ❌ | ❌ | ✔️ |
RCA Clip detection | ❌ | ❌ | ✔️ |
Remote out 12v pin (can drive 1 amp load) | ❌ | ❌ | ✔️ |
with wrist strap | ❌ | ❌ | ✔️ |
Knob Mount | ❌ | ❌ | ✔️ |
to accommodate protective TPU case | ❌ | ❌ | ✔️ |
Max Line-of-Sight range (feet) | 150 | 500 | |
Max RCA voltage level supported | 15 VAC peak / 10.6 VAC RMS | ||
Volume attenuation/gain | −95.5dB to +31.5dB | ||
1khz THD+N at 1V RCA level (0dBV) | <0.0015% | ||
1khz THD+N at 5V RCA level (12dBV) | <0.001% | ||
20hz THD+N at 5V RCA level (12dBV) | ~0.0004% | ||
SNR (Signal-to-noise ratio) | 116 dB (A-weighted) | ||
Frequency Response | 8hz-30khz |
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HPVM Pro Voltage Meter
- Precision volt meter for automotive and car audio
- 2-inch LCD with 65,000 colors
- Monitors four sources simultaneously
- Measures up to 18 volts
- Customizable display with ten gauge faces
- Bluetooth-enabled connection with free AuralSync app
Your Style. Our Precision.
Able to monitor four sources at once, the HPVM Pro is the most versatile graphing volt
meter available today, accurate to 2/1000 of a volt.
The HPVM comes equipped with Bluetooth connectivity, allowing it to connect to the
free Aural Sync™ app, optional AuralSync Companion Smartwatch, and other
AuralSync-enabled devices. Use the app to choose any one of ten gauge designs, then
create user-definable voltage ranges and custom colors to make each look match your
needs, and your style.
The HPVM also features wiring terminals on the back and bottom of the unit for
additional mounting options, and a clean look.
Overbuilt To Last
Extremes in vibration, humidity, and temperatures are always attacking everything in
your vehicle. A solid aluminum case houses high-density/temperature internal supports,
and gold-plated ENIG PCB to survive – and thrive – in any build.
Advanced Power Management
The HPVM’s innovative Deep Sleep mode is engineered to minimize power
consumption, drawing just 167 milliwatts when it senses a gradual voltage drop without
transients. This ensures minimal battery drain, taking up to 294 days to deplete a fully
charged 100 amp-hour 12V AGM battery.
While in low-power mode, the HPVM Pro continuously monitors cumulative battery
drain. A prominent red warning signal is triggered by significant voltage drops, flagging
potential issues such as excessive parasitic loads or a failing battery. This intelligent
design ensures early detection of power system issues, identifying issues like a weak
battery or excessive parasitic draw, before they become bigger problems.
The system’s rapid response circuitry also ensures immediate reactivation upon
detecting a voltage spike, seamlessly resuming full operation, and offering real-time
updates to keep you informed.
For instructions on connecting your HPVM, updating firmware, using the app, and more, please see our getting started page.
Features
Supply Voltage | 3v-18v |
Individual Voltage Monitoring Points | 4 |
Voltage Measurement Range |
1v-18v |
Accuracy | 99.99% accurate (+/- 0.002v) |
Precision | 1mV - 3 decimal places (e.g. 15.234v) |
Sample Rate | 330 samples per second per channel |
Display | 2.0" diagonal TFT HD IPS LCD - 240x320 pixels / 65k color |
Visual Refresh rate | 33 FPS |
Size | 71mm x 58mm x 25mm -2.8" x 2.3" x 1" |
Settings | Use our LF Audio AuralSync™ smartphone app or AuralSync Companion smartwatch to change settings on the unit. |
Over The Air (OTA) firmware updates |
Use our LF Audio AuralSync™ smartphone app to check for and apply firmware updates |
Getting started / wiring instructions
Certifications
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PVM Voltage Meter
- Precision volt meter for automotive and car audio
- 1.3-inch LCD with 65,000 colors
- Monitors two sources at once
- Measures up to 18 volts
- Customizable display with ten gauge faces
- Bluetooth-enabled connection with free AuralSync app
Your Style. Our Precision.
The HPVM is the most versatile graphing volt meter available today. Accurate to 1/500 of a volt and capable of measuring two sources simultaneously, the HPVM comes equipped with Bluetooth connectivity, allowing it to connect to the free Aural Sync™ app, optional AuralSync Companion Smartwatch, and other AuralSync-enabled devices.
Use the app to choose any one of ten gauge designs, then create user-definable voltage ranges and custom colors to make each look match your needs, and your style.
Overbuilt To Last
Extremes in vibration, humidity, and temperatures are always attacking everything in your vehicle. A solid aluminum case houses high-density/temperature internal supports, and gold-plated ENIG PCB to survive – and thrive – in any build.
Maximum Battery Efficiency
To save your battery power, the HPVM is equipped with Deep Sleep mode. When a gradual voltage drop with no transients is detected, the meter automatically reduces power consumption to just 167 milliwatts. At that rate, it would take 7,059 hours (294 days) to fully drain a 100 amp hour 12V AGM battery.
Once the meter detects a voltage spike, it instantly returns to full operation. It will also display total battery drain during low-power mode and issue a bright red warning if the voltage drop was significant, signaling a weak battery or excessive parasitic draw.
For instructions on connecting your HPVM, updating firmware, using the app, and more, please see our getting started page.
Features
Supply Voltage | 4v-18v |
Individual Voltage Monitoring Points | 2 |
Voltage Measurement Range |
1v-18v |
Accuracy | 99.99% accurate (+/- 0.002v) |
Precision | 1mV - 3 decimal places (e.g. 15.234v) |
Sample Rate | 330 samples per second per channel, 660 maximum SPS in dual channel |
Display | 1.3" diagonal TFT HD IPS LCD - 240x240 pixels / 65k color |
Visual Refresh rate | 33 FPS |
Size | 40mm x 73mm x 26mm 1.6" x 2.87" x 1" |
Weight | 2.3oz |
Power Consumption | ~460mW full power mode ~167mW in deep sleep move |
Settings | Use our LF Audio AuralSync™ smartphone app or AuralSync Companion smartwatch to change settings on the unit. |
Over The Air (OTA) firmware updates |
Use our LF Audio AuralSync™ smartphone app to check for and apply firmware updates |
Getting started / wiring instructions
Certifications
Explore Further
Support our brand, purchase replacement parts, or find out what's coming next!
Add-ons and replacement parts for different LF Audio products
Show your love for LF Audio with authorized merchendise!
Find out which products we are anticipating to release next!
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Trusted Engineering
Our cutting edge car audio devices are trusted and enjoyed by bassheads around the world.
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