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Thinklabs ONE Digital Electronic Recording Headphone Amplified Stethoscope
Manufacturer: Thinklabs
Model Number: ONE1
Our Price: $524.00

More Information

We are very excited to see that the Thinklabs One digital electronic stethoscope has been featured in the New York Times.

The smallest most powerful Stethoscope in the world. Fits in the palm of your hand. Amplifies over 100X. Uses ANY STYLE audio headphones.

- Thinklabs One Digital Stethoscope
- Thinklabs Studio Performance In-Ear headphones. (The One can be used with any high quality headphones.)
- Thinklink connection system for iPhone, iPad, Android, PC/Mac
- USB-type Charger 100-240V
- Pocket carrying case
- 2 Year Thinklabs Warranty

One has a standard 3.5mm jack so you can connect high quality headphones instead of old tubing style binaurals. You get better sound, more comfort, a more compact stethoscope and the choice to use the headphones of your choice. One includes Thinklabs studio quality In Ear Headphones, with excellent bass for heart sounds and crystal-clear treble for music enjoyment.

Inventor Clive Smith's Take on Headphones

"I made a careful study of headphone audio before specifying what we would offer with One. I wanted headphones with strong bass, but also really good frequency response, so you'd enjoy music with the same headphones. I think you'll be very impressed with what we include in the One package. You also have the flexibility to choose your own headphones to use with your One. Test drive before you buy and make sure you select a pair that can handle the One's heart sound output. Enjoy!"

Thinklabs headphones have an extra long cable so you can wear them comfortably around your neck when not in use. The anti-tangle flat cable is strong and resists tangling for convenient use in clinical settings. The eartips come in 3 sizes, for a perfect fit.

Audio Power:
One is designed for high power output, with dedicated headphone amplifiers, one for each channel. Voltage doubling charge pumps provide extra headroom for low distortion reproduction of S1 and S2 heartbeat peaks. The headphone amplifiers have sufficient power to drive low-impedance audio headphones, producing 45.2mWatts (see Warning below). Competitive stethoscopes operate on lower voltage, use a single amplifier and high impedance speaker, resulting in clipped heartbeats at significantly lower power output.

Warning: The One can produce very high sound pressure levels, exceeding 100 times the decibel level of a conventional stethoscope. This amplification is intended for use with obese patients and faint body sounds. When listening to loud heartbeats in thin-chested patients, please reduce volume to a level that is comfortable for you, to protect your hearing.

The One allows you to listen with multiple filter choices. You can also set two that you use most as "favorites" that are super quick to select. So you'll have both choice and speed.

The One's Hertz Scale gives you a relative idea of the filter range you have selected. LEDs to the left indicate that lower frequencies will be reproduced. LEDs to the right indicate higher frequencies will be reproduced. The more LEDs are on, the wider the range of frequencies, the narrower the indication, the narrower the range of frequencies for the filter you have selected. For instance, you may want to narrow the bandwidth to filter ambient noise or select for very specific heart sounds, such as listening to valve clicks but exclude breath sounds while doing so.

Changing Diaphragm Pressure - In addition to the filter setting, you can also change the frequency response by applying more or less pressure on the diaphragm. This is a feature of Thinklabs patented Electromagnetic Diaphragm technology. As you push on the diaphragm, the "gap" in the sensor changes, which modifies the sensor's response to lower frequencies. As shown, the bass response increases significantly with pressure on the diaphragm. This adds an exquisite, tactile sense to using the One - like playing a musical instrument.

The One uses a rechargeable Lithium Ion battery so there's no need to replace batteries. The USB-style charger cable is included, along with compact world-wide AC charger (100-240V). The battery capacity has been designed to require only one or perhaps two charge cycles per week - see the analysis below. Battery Level is indicated on the 0 - 10 scale to easily check remaining capacity. There are multiple warning levels, so the One will warn you well ahead of the time you need to recharge your stethoscope.

The One uses materials and parts not usually found in stethoscopes:
- high strength sapphire crystal, robust enough to be used in deep sea chronometers
- precision machined aluminum, hand-polished by people who work with satellite systems and other advanced applications requiring perfect finish
- specialized electronic components that are custom manufactured for Thinklabs
- gold-plated connectors and jacks to ensure low impedance connections
- design refinements that focus on minutiae that get the last detail of performance
All apps are available in the apple or google app stores

Thinklabs Stethoscope App
- Record and vizualize heart sounds on your iPhone or iPad
- Scroll and zoom in/out with a multi-touch interface
- Edit, save, and email sounds
- Send images, videos, sounds, and notes

Thinklabs iMurmur App
Watch, listen, and learn:
- Portable Heart Sound Reference Library
- Real patient recordings/photos with notes and email capability, perfect for teachers and students

TapeMachine App - Android
This Android App provides many features suitable for Phonocardiography, recording, teaching, sharing stethoscope sounds around the bedside or classroom.
- Record, Trim, Save, change playback speed.
- Share via almost any Android communications apps:
Email, Whatsapp, Dropbox, text messaging, etc.

Latest Customer Reviews
5 star rating My Dream Come True! 5/4/2015
A. Evan Lewis PhD, MD - Tennessee
This is a great stethoscope. I have been using it for a few weeks now. I had been dreaming about designing this exact device. The main problem with electronic stethoscopes I think is the tendency to pick up artifact like crackling in my knuckles and movement on the skin etc. But conventional stethoscopes have the same problem. I am a hospitalist and most of my patients are lying down. I have found that with this stethoscope I can easily sit it on the chest and take my hand away. Then the signal is completely free of artifact and the sound is perfect! Really fantastic. Far better than a conventional stethoscope. It could do with a little weight on it when used this way, specially if the chest in hairy. I might make a little metal disk to fit over it when I really need extra weight. But on the other hand it is delightfully light to carry around. You can very conveniently adjust the volume and frequency ranges at a touch of a button. And the frequency filters are much more effective than the differentiation you get with bell and diaphragm. There are about 5 pre-set frequency filter ranges and you can choose any two as your favorites. On the lung exam I am hearing sounds I never heard before. Everyone comments when they see me using this beautifully made device - doctors, nurses and patients alike. I let them listen to it and they are immediately sold. All the medical people want one. The only problem is that they are a bit pricey. I expect prices may come down and at $250 I think they would sell like hotcakes. As an internist we don’t have any other personal tools we can buy for our own pleasure. The stethoscope is about it. So I decided it was an investment I just had to make and I am so pleased I did. It is great for teaching. You can record sounds onto your phone, display it as a phonogram graph, trim it to length, and save it, reopen the file or send it as email or SMS. It is just a little fiddly to connect the cables for recording but that is unavoidable. I carry the extra cable and tiny adapter in a plastic bag in my pocket. I put the device itself in the top pocket of my shirt and sling the ear buds around my neck so it doesn’t get tangled. Putting the ear buds in is slightly more fiddly than a conventional stethoscope but worth it. There is a good review on YouTube. His only criticism is that the ear buds only lasted 6 weeks. Mine are doing well so far. But they are an easily replaceable accessory, and not terribly expensive to replace. They need to be able to reproduce very low frequency sounds. It is surprising that when you play heart sounds back through the iPhone speakers you can’t hear a thing. It just cannot reproduce the low frequency. But plug in headphones or Bose Quiet Comfort headphones or speakers with a subwoofer and the sound reproduction is great! I just love my new tool! Strongly recommended.


Balkowitsch Enterprises, Inc. was founded in November 1998. Since then we have grown into a multi-million dollar a year retail and online company and represent some of the finest product lines available. Our years of experience allow us to support a world-wide customer base. It is our goal to offer quality items at affordable prices and provide a level of customer service that is unparalleled.

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Shane Balkowitsch is a Registered Nurse and manages all medical, health and wellness related product lines.

Balkowitsch Enterprises, Inc. stands behind every product that we sell. That is to say, if you purchase a product from us and are unhappy with it for any reason, return it for a 100% refund of the purchase price, less shipping. All items must be returned within 10 days of receipt.

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Balkowitsch Enterprises Inc.
800-355-2956 U.S. Toll Free
701-223-9936 Local
+1 011 701-223-9936 Int.
701-223-8984 Fax
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