BioMedical Life Systems GV350® High Volt Pulsed Stimulator | HVPS KGV

The BioMedical Life Systems GV350® High Volt Pulsed Stimulator is a portable prescription electrotherapy device designed for clinician-directed High Voltage Pulsed Stimulation (HVPS/HVPC). Rather than using the symmetrical biphasic waveforms common to many portable TENS and NMES units, the GV350 generates a twin-peak monophasic pulsed waveform with adjustable voltage, pulse rate, and polarity.

Its stimulation architecture uses two active outputs with one dispersive return, allowing the two active channels to operate continuously together or alternate in fixed cycles. The compact, battery-powered format gives physical therapy clinics, rehabilitation departments, sports-medicine programs, and other qualified users access to dedicated high-voltage pulsed stimulation without a full-size clinical console.

The GV350 is an Rx-only medical device and should be used under appropriate professional direction.

GV350 at a Glance

What Makes the GV350 Different?

The GV350 is not simply a high-powered TENS unit.

High-voltage pulsed current uses short-duration monophasic pulses with comparatively high peak voltage. The GV350 allows the clinician to adjust pulse rate from 1–100 Hz and output from 0–350 volts while selecting the polarity of the active electrodes.

A maximum 700 mA peak output measured across a 500-ohm load. That figure should not be directly compared with the lower numerical mA settings displayed by conventional TENS or NMES devices because waveform shape, pulse duration, voltage, and duty cycle all affect how electrical stimulation is delivered.

For a broader explanation of voltage, current, and impedance in electrotherapy, see our Constant Current vs. Constant Voltage Electrotherapy guide.

Two Active Outputs + One Dispersive Return

Instead of two conventional independent electrode pairs, the GV350 provides:

• Active output A1
• Active output A2
• One dispersive return

In continuous mode, stimulation is delivered through both active outputs continuously.

In alternating mode, the two active outputs alternate on a fixed five-second cycle.

This arrangement is characteristic of the GV350's high-voltage pulsed-current design and is one reason it should not be treated as interchangeable with a standard dual-channel TENS unit.

Clinician-Directed Applications

high-voltage pulsed current for professional, adjunctive electrotherapy applications that include muscle re-education, muscle-spasm management, support of local circulation, range-of-motion programs, and disuse-atrophy prevention. Literature also discusses edema management and wound-care applications.

These are clinical applications, not self-treatment instructions. The GV350 is classified in the United States as a prescription device, and electrode placement, polarity, stimulation parameters, and treatment duration should follow the prescribing clinician's protocol.

For an overview of how HVPS fits alongside other electrotherapy modalities, visit our Which Therapy Modality to Use? TENS, NMES, IFC, Ultrasound & Rehabilitation Guide.

Adjustable Polarity

The GV350 allows the active electrode polarity to be selected as positive or negative.

Polarity is an important characteristic of monophasic high-voltage stimulation because current flows in a defined direction rather than alternating equally between positive and negative phases as it does with a balanced biphasic waveform.

Use the polarity setting specified by the treating clinician and the current GV350 operating instructions.

Continuous vs. Alternating Stimulation

The mode switch changes the delivery pattern without converting the GV350 into a conventional NMES work/rest program. Users should follow the parameters prescribed for HVPS rather than importing settings from another type of stimulator.

GV350 vs. Portable TENS and NMES Devices

If the treatment objective is conventional muscle contraction rather than HVPS, compare the Balego EMS Digital NMES Stimulator.

If TENS, NMES, interferential, and Russian stimulation are needed in one portable device, compare the InTENSity Select Combo II.

These products are different modalities rather than lower-cost substitutes for the GV350.

What's Included With the GV350?

The current BioMedical Life Systems GV350 kit includes:

• GV350 HVPS stimulator
• Four 2" × 2" active electrodes
• One 4" × 7" dispersive electrode
• Three GV lead wires—two red active leads and one black dispersive lead
• Four AA batteries
• Hard carrying/storage case
• Belt clip
• Instruction manual

A medical-grade AC wall adapter is available separately.

Battery or AC Operation

The GV350 is supplied ready for portable operation using four AA batteries. This allows the device to be used without being tethered to a wall outlet during appropriately supervised treatment.

For stationary clinic use, BioMedical Life Systems also offers an optional medical-grade wall adapter.

The wall adapter should remain an accessory rather than a Shopify product variant, because it does not change the identity or GTIN of the KGV device itself.

Replacement Electrodes

Electrode condition matters with all forms of electrical stimulation. Pads that are dry, damaged, poorly adhered, or incorrectly connected can change current density and treatment comfort.

For compatible general electrotherapy pads, browse our TENS/NMES/FES replacement electrodes or review the Balego Electrode Guides.

Important: the GV350 also uses a larger dispersive-return electrode as part of its HVPS circuit. Do not replace the dispersive pad with a different electrode configuration unless it is permitted by the manufacturer or prescribing clinician.

GV350 Technical Specifications

Prescription Status

The FDA's AccessGUDID record identifies the BioMedical Life Systems GV350 as a prescription-use medical device and not an over-the-counter device.

Federal and manufacturer labeling should govern sale and use. Balego should therefore present the GV350 as a professional/prescription electrotherapy device rather than marketing it as a general consumer muscle stimulator.

Frequently Asked Questions

What is the GV350? The GV350 is a portable high-voltage pulsed stimulator manufactured by BioMedical Life Systems. It delivers twin-peak monophasic pulses through two active outputs and one dispersive return.

Is the GV350 a TENS unit? No. Although both use surface electrodes, the GV350 is a dedicated HVPS/HVPC device with a monophasic high-voltage waveform. Conventional TENS generally uses different waveforms and output characteristics.

Is the GV350 an NMES unit? The GV350 can be used in clinician-directed stimulation programs involving muscle activation, but it is technically an HVPS device rather than a conventional biphasic NMES stimulator. For dedicated NMES programs, see the Balego EMS Digital NMES Stimulator.

How high does the GV350 output go? BioMedical Life Systems specifies an adjustable output of 0–350 volts and up to 700 mA peak, measured across a 500-ohm resistance.

Does 700 mA mean it feels like a 700 mA conventional stimulator? No. Peak current cannot be compared directly across different waveform types. Pulse duration, waveform, impedance, duty cycle, electrode area, and voltage all influence the delivered stimulation.

How many channels does the GV350 have? It uses two active outputs and one common dispersive return.

Can the two active outputs alternate? Yes. Alternating mode switches stimulation between the two active outputs approximately every five seconds.

What treatment timers are available? 15, 30, and 60 minutes.

What batteries does it use? Four AA batteries are supplied with the kit.

Can the GV350 run from wall power? Yes. an optional medical-grade wall adapter, sold separately.

Does it include electrodes? Yes. The kit includes four 2-inch square active electrodes and one 4 × 7-inch dispersive electrode.

What is the GV350 SKU? The manufacturer's current catalog number is KGV.

What is the GV350 GTIN? The FDA-listed primary GTIN/UDI-DI is 00857771003194.

Is the GV350 prescription-only? Yes. FDA AccessGUDID identifies the GV350 as prescription use and not OTC.

What warranty does it have? 2-year limited warranty.