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LF Audio

(HPVM-PRO) High Precision Voltmeter - Pro

(HPVM-PRO) High Precision Voltmeter - Pro

Meet the HPVM PRO (High Precision Voltmeter), our bigger version of the most precise, fastest-sampling smart wireless voltmeter designed for automotive and car audio enthusiasts.

Understanding the crucial role of voltage in your car is key. Whether it's sparking combustion, driving an electric motor, or powering your amplifier to create sound, voltage is at the heart of it all. Low voltage can lead to heat, component stress, limited output, sound quality issues, and even leave you stranded. Ensure your voltage is always optimal with the HPVM PRO, the ultimate tool for the job!

The HPVM is a high-precision wireless graphing voltmeter with 99.99% accuracy and up to 3 decimal places of precision (e.g., 15.234v). It can monitor up to 4 individual voltage points! See the voltage sag between your alternator, front battery, lithium bank, and amp to ensure your electrical resistance is dialed in and on point!

The HPVM PRO is not just a high-performance tool, it's also built to last. With a robust solid aluminum case, high-density/temperature internal supports, and a gold-plated ENIG PCB, it's designed to withstand extreme conditions and the loudest, most aggressive builds.

Onboard AuralSync™ technology lets you connect the voltmeter to your smartphone, our AuralSync Companion Smartwatch, and other LF Audio AuralSync™ enabled devices.

For instructions on connecting your HPVM, updating firmware, using the app, and more, please see our getting started page.

CUSTOM CASE COLORS AND GRAPHICS - Please order through our customization partner, EM Audio, for custom case colors, graphics, laser etching, and more!


Supply Voltage 3v-18v
Individual Voltage Monitoring Points 4

Voltage Measurement Range

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 40mm x 73mm x 26mm -1.6" x 2.87" 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



Regular price $249.00 USD
Regular price Sale price $249.00 USD
Sale Sold out

Customer Reviews

Based on 7 reviews
Benjamin Holt (Smyrna, United States)
This Voltmeter is BOSS

Have yet to install but just playing with it on the bench. Let me just say, it is dope! Very easy to get lost in all the gauge faces and adjustments that can be made. Can't wait to install this beast.

darrell lindsey (Cartersville, United States)
Cool little meter

Easy to install and has a lot of different options
Looks cool too👍🏾


haven’t hooked it up yet but it is beautiful can’t wait to get it installed


Best device for any car audio enthusiasts it not comparable to any other volt meter when it comes to quality , accuracy, and speed I’ve already fixed one issue just getting this and I now know I need to up my charging


Excellent and accurate product!

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