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Quattro 2.5 Clinical TENS Unit, Muscle Stimulation, Russian Stim, and Interferential Unit

Quattro 2.5 Clinical TENS Unit, Muscle Stimulation, Russian Stim, and Interferential Unit
Regular price $1,699.99You save 47%
Price with 20% PROMO:
Model Number: LG-QUATTRO25
Usually ships the same business day
Extra Electrode Pads:
Optional Electrode Prep Spray:


The microprocessor controlled QuattroTM 2.5 is a professional four-channel electrotherapy device that provides IF 4-Pole, IF 2-Pole, Russian, EMS and TENS waveforms with two separate timers. Itís portable design lets you take it to your patient or keep it at the clinic. Itís easy to use and up and running within minutes. And itís advanced operating system ensures a complete range of therapy no matter where you use it! You can choose between several different amplitude modulation options. The interferential and pre-modulated modes offer frequency modulation as well as a static frequency option. Comes with an easy to use instruction manual and USA technical support if needed.
Product Features:
  • Two separate timers to treat two areas/patients at once or one larger area.
  • Preset protocols as well as customized user defined protocols
  • Four channels of electrical stimulation output
  • Large easy-to-read graphical LCD display with exact dial performance and two programmable timers
  • Waveforms include TENS, EMS, 2-pole Interferential, 4-pole Interferential and Russian 10-presets per waveform totaling 50-presets in all (plus professional mode)
  • Designed for tabletop, therapy cart or mobile use
  • Includes eight sets of electrodes, eight sets of rubber electrodes with sponges, eight straps, four sets of lead wires and a user manualwith preset protocol guide
  • Product dimensions: 10" x 7"x 3"
  • Product weight: 6.7 lbs
  • 2-year warranty
Technical Specifications
Click here To Download the Specification File
Adapter Supply Voltage: 100-240 VAC, 50-60Hz, 0.5A
Adapter Output: 15V — 1A Max.
Adapter Dimensions: 110mm (L) x 185mm (W) x 33mm (H)
Dimensions: 250mm (L) x 185mm (W) x 82 mm (H)
Operating Environment: Temperature: 10⁰C (50⁰F) to 40⁰C (104⁰F)
Relative Humidity: 30% - 85%
Storage Environment: Temperature: -20⁰C (-4⁰F) to 55⁰C (131⁰F)
Relative Humidity: 20% - 90%
Maximum Treatment Time: 60 minutes
TENS and EMS Mode
Waveform Type: Mono- or Bi-phasic square
Mode Selection: CC (Constant Current) or
CV (Constant Voltage)
Frequency: 1-250 Hz
Frequency modulation (F.M.): 0-249 Hz
Burst Rate (Burst): 0-10Hz (7 pulse)
Phase Duration(P.Dur): 30-400μs
Amplitude Modulation (A.M.) 0%-100%
Output Intensity: 0-100mA (CC, at 1k ohm load)
0-100V (CV, at 1k ohm load)
Cycle Time (Cycle): Continuous , 4/4, 4/8, 7/7, 5/5, 4/12,10/10, 10/20, 10/30, 10/50
Treatment Time: 1-60 minutes
Ramp Time: 1 second
4-Pole Interferential Mode
Waveform Type: Bi-phasic square
Mode Selection: CC (Constant Current) or
CV (Constant Voltage)
Vector: Auto: 0%-100%
Manual: 0⁰-90⁰
Carrier Frequency(C.F.): 4.0kHz
Sweep Low Beat Frequency:
(Beat H.)
(Beat L.) - 150 Hz
Sweep High Bet Frequency:
(Beat L.)
1-(Beat H.) Hz
Output Intensity: 0-50mA (CC, at 1k ohm load)
0-50V (CV, at 1k ohm load)
Treatment Time: 1-60 minutes
2-Pole Interferential Mode
Waveform Type: Bi-phasic square
Mode Selection: CC (Constant Current) or
CV (Constant Voltage)
Carrier Frequency(C.F.): 2.5kHz/td>
Sweep Low Beat Frequency:
(Beat H.)
(Beat L.) - 150 Hz
Sweep High Bet Frequency:
(Beat L.)
1-(Beat H.) Hz
Output Intensity: 0-50mA (CC, at 1k ohm load)
0-50V (CV, at 1k ohm load)
Treatment Time: 1-60 minutes
Cycle Time (Cycle): Continuous, 5/5, 4/12, 10/10, 10/20, 10/30, 10/50
Ramp Time (Ramp): 2 seconds
Russian Mode
Waveform Type: Bi-phasic square
Mode Selection: CC (Constant Current) or
CV (Constant Voltage)
Carrier Frequency(C.F.): 2.5kHz
Burst Frequency(Freq.) 20-100 Hz
Output Intensity: 0-50mA (CC, at 1k ohm load)
0-50V (CV, at 1k ohm load)
Duty Cycle: 10%, 20%, 30%, 40%, and 50%
Treatment Time: 1-60 minutes
Ramp Time (Ramp): 1s, 2s, and 5s
General Specifications
Adapter supply voltage: 100V-240V, 50Hz-60Hz, 0.8A
Adapter output: 15V 1.2A Max.
Adapter Dimensions: 83mm(L)*50mm(W)*41mm(H)
Dimensions: 250mm(L)*185mm(L)*82mm(H)
Operating Environmental: Temperature:10°C(50°F) to 40°C(104°F), Relative humidity: 30%-85%
Storage Environmental: Temperature: -20°C(-4°F) to 55°C(131°F), Relative humidity: 20%-90%
Maximum Treatment Time: 60 minutes
Waveform Specifications
Waveform Type Bi-phasic square
Mode Selection CC (Constant Current) or CV (Constant Voltage)
Vector Auto: 0%-100%, Manual: 0°-90°
Carrier Frequency (C.F.) 4.0kHz
Sweep High Beat Frequency (Beat H.) (Beat L.) -150 Hz
Sweep Low Beat Frequency (Beat L.) 1-(Beat H.) Hz
Output Intensity 0-50mA(CC, at1kohm load),0-50V(CV, at1kohm load)
Treatment time 1-60 minutes

Customer Reviews & Ratings

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  • Have bought many items for LG Medical since 2012 and never had an issue. Service is always great and the products are excellent quality for a great price. If you have a question and call they are knowledgeable about their products plus the LG web site has many videos and tips. I will continue to buy from LG Medical as I feel the are one of the best in their field. DMD

    - Written on July 17, 2017

  • A family member ordered from LGMedSupply in the past and had great service, and that is why I felt safe ordering from them. And they didn't let me down. I got exactly what I ordered and it got to me when it was supposed to so that is why I gave them the top rating.

    - Written on July 19, 2017

  • I injured my hip bowling. I am a 45 year old female and I thought I had to live with this deep aching annoying pain for the rest of my life; it had been ongoing for 3 years. Oh my goodness this Tens unit changed my life in 3 days . Granted I ran this thing for a couple of hours at a time and on a very high intensity level (it hurt good). BUT I have been pain free for over a month now! The TENS unit loosened up deep into the muscle/nerve whatever it was and wiped my pain away.

    - Written on July 17, 2017

  • I was very happy with the service that I got from the staff at LG Med Supply. I looked all over the net for over a year to see who was the main Co. that had not only what I needed but who was the Co. that seemed to be the main Manufacturer of the Tens Unit. Then I started checking who had all of the Conductive Designed Pads That my Dr. wanted me to have and here again LG Med Supply had all of the items and were offering the best prices on all of the items that I needed. LG Med Supply was hands down the best in all of the categories as far as who had all of the items that I needed from the Back Belt Strap/Neck electrode/Shoulder and Knee Conductive Designed Pads that my Dr. wanted me to start therapy with. LG Med Supply is the only web site that had a vast selection of different shaped Electrodes which deliver a totally different stimulation that really gives you a completely different feeling then a straight square pad electrode. Thank You LG Med Supply for being there in my time of need. Carter

    - Written on January 22, 2018


    - Written on January 16, 2018

  • Just got my LG TECH Elite. First day I am amazed! I was washing dishes which usually puts me down from middle back pain. As soon as the pain started I turned on my tens and instant relief! ! My wife said oh I guess you can go back to work now!! Lol. I wish I knew about this 3 months ago! My life just got a whole lot better!

    - Written on June 28, 2017

  • Excellent, friendly service and very quick delivery. I like doing business with this company and I would not hesitate to order any of their products. They care about their customers.

    - Written on January 31, 2018

  • This Tens Unit is just great. I'm disabled from chronic neck pain and must take numerous medications. I believe this unit is going to help me cut costs on pills as well as give me relief from constant pain. Thank you LG.

    - Written on January 30, 2018

  • LOVE IT! I have only used my unit for a couple of weeks, and it helps with my back and hip pain. I am recovering from surgery for a meniscus tear in my knee, and I use my unit to help with the healing process as well. The power is equal to the units at my physical therapy office. The price is excellent, which allowed me to purchase extra pads, battery charger and lead wires.

    - Written on June 28, 2017

  • My husband had a very painful back problem and we ordered a TENS unit from LG. We got it in a couple of days and are delighted with the service from LG and the efficiency of the TENS unit. We would highly recommend them to anyone!!

    - July 21, 2017

  • it really helps alleviate the pain in my lower back/spine. Meds are no longer necessary and for that I am grateful to LG and this product.

    - January 22, 2017

  • Order was delivered in perfect condition & in a timely fashion. Always pleased with the products and the service of the company.

    - February 20, 2017

  • I did not understand fully how to use the Tens Unit. Lucy with customer service was SO patient and walked me through the entire process My feet felt better just after one session! LGMed Supply would be an excellent addition to your list of trusted companies!!

    - January 17. 2018

  • I purchased this unit after having a knee replacement. I decided to go with the unit that had EVERYTHING ( the price of the unit was the price of two trips to the doctor, it pays for itself). I had a little difficulty programming the unit, but called and spoke to tech support and they walked me through it. Very simple, once you know what you are doing. Thank you LG!

    - January 6, 2018

  • Received next day! Was surprised and delighted!

    - February 2, 2018

  • This little machine is worth every penny if you suffer from chronic pain! Or pain of any sort! I was really confused on what brand to order and what model, etc. and I'm sooo glad I found LG med supply!!! If you're having trouble deciding what model, I highly suggest this Quad Combo! I thought I was going to prefer the TENS mode, but surprised myself by really enjoying the Interferential mode.

    - February 19, 2018

  • Well I'm amazed because it came like the very next day. If it wasn't the very next day, it was definitely the day after that. Wow, they are the fastest I ever did business with online. I'm gonna assume they keep a stock in major cities somehow. Thank you for the opportunity to give them feedback because they do deserve it. Greg L Newman

    - January 11, 2018

  • 'm absolutely IN LOVE with this Quad Combo Unit! I've been looking at ordering a TENS unit for months, went back & forth looking at different places (such as Amazon) and after finding this website, decided I wanted an LG opposed to other cheaper brands. Then, I couldn't decide which model to get! I am SOO happy I talked myself into one that had different modes -- Thought I would prefer the TENS mode, but I actually like the Interferential mode the best! If you're on the fence about ordering one... GO FOR IT! Shipping was FREE & SUPER FAST!!

    - February 2, 2018

  • Product just as described. Was having some lower back discomfort and some tight muscles that were also contributing to the pain. Had been going to the chiropractor which seemed to help so I got one of these so I could do treatments on my own. Well worth the money instead of paying for the chiro visits. Really has helped. Thanks LG!

    - March 4, 2018

  • I just wanted to say that I am so grateful for this device. I have had rotator cuff and scapula pain for some time which was off the charts. I was taking so much pain medication that it was starting to make me have terrible stomach issues. This unit was such a blessing to me. I do have to use it regularly to control my pain levels but it does work. Small investment for great results.

    - March 26, 2018

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