CORE Digital Attachment

In stock with free shipping. MPN: #COR200

$ 199.00


$ 199.00

Eko Platform - Plan Options

Essentials Plan

Record, Save, and Share High Quality Recordings

Pro Plan, 1st Month Free

30-day trial of AI analysis algorithms for heart murmurs

Pro Telehealth Plan, 1st Month Free

30-day trial of AI-powered cardiopulmonary telehealth platform


FDA Cleared

HIPAA Compliant

FSA/HSA Eligible

Free Shipping & Returns

2-Year Warranty

Money Back Guarantee

Product Overview

  • Attaches to your own stethoscope and enhances auscultation through amplification, active noise cancellation, and powerful software. CORE supports wireless auscultation using the Eko App and headphones.
  • Compatible with most popular analog stethoscope models from 3M Littmann, ADC, WelchAllyn, MDF, and Medline with no cutting necessary.
  • Toggle between analog listening and loud, clear sounds amplified up to 40X for unrivaled flexibility.
  • Eko products are FDA cleared and used daily by clinicians at over 4,000 schools, clinics, and hospitals.
  • The free Essentials Plan enables clinicians to visualize, record and save sounds for further analysis, or securely share them for a second opinion.
  • Add the Pro Plan to enable Eko AI analysis for heart murmurs or Pro Telehealth Plan for AI-powered telehealth visits.

Digitize the Stethoscope You Already Own

Get more from the stethoscope you already own with dual-mode acoustic and amplified listening. The new CORE Attachment enhances its powerful 40X amplification with Active Noise Cancellation—helping to reduce background noise even in noisy clinical settings. To further improve listening, we listened to our community and redesigned the CORE to be 25% smaller and 30% lighter, for more comfortable use throughout the day.

With CORE, you can toggle between traditional analog examination and loud, clear heart and lung sounds. Then visualize what you hear through waveforms streamed in real-time to a smartphone or tablet. Eko’s powerful software integrates seamlessly with the new CORE, enabling clinicians to deepen their analysis and even share exams for a second opinion. CORE is compatible with the most popular analog models and assembles in minutes to enhance auscultation.

Pair with Eko Software

Unlock the full potential of CORE by pairing with the Eko Platform.

  • Visualize heart sound waveforms (phonocardiogram) in real-time.
  • Capture 15, 30, 60, or 120-second recordings to chronicle a patient’s exam history.
  • Share recordings for a second opinion or referral as easily as sending an email.
  • A single dashboard connects you to multidimensional patient care, exam records, reports and colleagues.
  • Add the Pro Plan to help detect early-stage heart murmurs with Eko AI analysis algorithms.
  • Add the Pro Telehealth Plan for AI-powered live stream auscultation with integrated videoconferencing.

Features & Specs

Product Information

  • MPN: COR200
  • UPC: 850010298009


Digital Stethoscope

  • 40x amplification
  • 7 volume settings
  • Active Noise Cancellation
  • Digital & acoustic sound modes
  • 20Hz - 2kHz frequency response
  • 4000Hz sample rate


Connection & Storage

  • Bluetooth 4.2 low-energy
  • .WAV and .PDF file formats



  • Works with common single tubed Littmann™, Welch Allyn™, MDF™, ADC™, and Medline stethoscopes
  • Works with pediatric and infant stethoscopes


Dimensions & Weight

  • 2.8 inches (71 mm) H x 0.9 inches (23 mm) W x 0.9 (23 mm) D
  • 1 ounce (28 grams)



  • Easy on/off toggle
  • Micro-USB charging
  • Rechargeable lithium-ion battery with 8-hour life



  • Polycarbonate thermoplastic
  • Does not contain natural rubber latex or phthalate plasticizers
  • Clean with isopropyl alcohol wipes


Certifications & Licenses 

  • FDA Cleared
  • CE Cleared
  • ISO 13485 Certified
  • MDSAP Certified
  • HIPAA Compliant



Commonly Asked Questions


What is the Eko CORE Digital Attachment?


The CORE or CORE Digital Attachment is an FDA cleared device that allows stethoscopes to operate in both analog and amplified modes. CORE has both active noise cancellation to reduce background noise and Bluetooth functionality so it can wirelessly connect with the Eko App.



What’s the difference between the Eko CORE Digital Attachment and the 3M™ Littmann® CORE Digital Stethoscope?


The Littmann® CORE Stethoscope is a fully cardiology-grade stethoscope that is assembled with the Eko CORE Digital Attachment. It is assembled with a 3M Littmann chestpiece, tubing, and eartips.


The Eko CORE Digital Attachment is also available by itself and is compatible with most popular stethoscope models from 3M Littmann, ADC, WelchAllyn, MDF, and Medline with no cutting necessary.



How does the CORE Digital Attachment work for Bluetooth or Wireless Auscultation?


The CORE Digital Attachment provides wireless functionality utilizing Bluetooth technology. CORE supports wireless auscultation using the Eko App and headphones, Bluetooth-enabled hearing aids, or other devices. The CORE Digital Attachment can be affixed to a stethoscope chestpiece and be used without traditional tubing and earpieces.



Is the CORE Digital Attachment compatible with pediatric stethoscopes?


The CORE Digital Attachment comes with adapters to fit adult, pediatric, and infant (neonatal) stethoscopes and is intended for use on both pediatric and adult patients.



Are Eko products FDA cleared?


The Eko CORE, Eko DUO and Analysis Software are FDA cleared and CE marked. 


Is the CORE Digital Attachment compatible with the Eko App & Platform?


Yes the 3M™ Littmann® CORE Digital Stethoscope connects to Eko software. The free features of the App enable clinicians to:

  • Visualize heart sound waveforms (phonocardiogram) in real-time
  • Capture, save, and share 15, 30, 60, or 120-second recordings
  • Auscultate wirelessly utilizing Bluetooth technology
  • Connect to the Eko Dashboard to view patient records and download reports


What is Eko AI analysis and the Pro Plan?


The Pro plan enables AI analysis of heart sounds to your stethoscope, and helps identify heart murmurs and early signs of structural heart disease. We recommend the Pro Plan for individuals and small clinics that want to digitize their practice and identify early signs of heart disease.



What is Eko Telemedicine and the Pro Telehealth Plan?


The Pro Telehealth plan combines high-fidelity stethoscope auscultation sounds, videoconferencing, and AI analysis into a single platform. Pro Telehealth is built for small clinics and multi-site hospitals to quickly deploy without the overhead of large scale telemedicine platforms.



How do Eko Pro and Pro Telehealth plans work and is there a free trial?


Both the Pro and Pro Telehealth plans are available for subscription on our website. You can checkout with just a subscription or purchase a stethoscope & subscription bundle. All stethoscopes come with the free Essentials plan.


All paid plans come with a risk free 30-day trial. To claim your trial, checkout with your desired plan and then our support team will activate your account within five business days. There are both monthly and yearly plans that can be canceled at any time.



What is the warranty and return policy for the CORE Digital Attachment?


The CORE Digital Attachment comes with a 2-year warranty which is warranted against any defects in material and workmanship and Eko will honor a 30-day return policy for a full-refund.



Eko App Compatibility

  • Works with common single tubed Littmann™, Welch Allyn™, MDF™, ADC™, and Medline stethoscopes
  • Works with pediatric and infant stethoscopes

Phone an Device Compatibility


Apple iOS

Apple devices with iOS 11 or later.


For wireless listening - Compatible with AirPods for wireless listening on the above devices. Wireless listening with other Bluetooth headphones has not been validated.



Most PCs with Windows 10 and above.


Windows does not support wireless listening.



Samsung Galaxy, Google Pixel, and other Android devices 8.0 and up (see list below).


For wireless listening - Compatible wireless listening when paired with the Eko App.


Compatible Android devices:

Samsung Galaxy Note 10+

Samsung Galaxy Note 9

Samsung Galaxy Note 8*

Samsung Galaxy S10

Samsung Galaxy S10+*

Samsung Galaxy S9

Samsung Galaxy S9+

Samsung Galaxy S8*

Samsung Galaxy S8+

Samsung Galaxy S7 Edge

Google Pixel 3*

Google Pixel 3a

Google Pixel 3 XL

Google Pixel 4*

Google Pixel 4 XL

Google Pixel 2

Google Pixel 2 XL

Motorola Moto X4

LG Nexus 5X*


Learn more about system requirements & compatibility



Resources & User Manuals

Stethoscope Comparison Tables


Comparison of common stethoscope features.

Eko & 3M Littmann Stethoscopes

All Digital Stethoscopes

All Telemedicine Stethoscopes


Clinical Research


Read published clinical research featuring Eko technology in practice.



Case Studies


Discover examples of how Eko is helping health systems address real-world challenges.





Redesigned CORE Overview

How to Install CORE to a Traditional Stethoscope

How to Auscultate Wirelessly with Eko

Using Eko for Telemedicine

Demonstrating Eko AI for Murmur & AFib Screening





Eko CORE User Manual

Eko AI Analysis Software User Manual

Visit our support portal for all technical documentation of the CORE, Eko App, and Dashboard.



Returns Policy


30-Day Money Back Guarantee: If you are unsatisfied with the Product(s) you purchased, you may return the Product within 30 days of receiving it with free return shipping.



2-Year Warranty


Eko expressly warrants that the Eko Products will materially conform to its published specifications and be reasonably free from defects in materials and workmanship for a period of TWO (2) YEARS for the Eko CORE Digital Attachment, Eko CORE Digital Stethoscope and ONE (1) YEAR for the Eko DUO, commencing on the date of delivery of the Eko Product to you (the “Warranty Period”). This Limited Warranty only applies to products which are purchased from Eko and other authorized retailers, resellers, and distributors and used, stored, and handled in the manner recommended by Eko. We may change the availability of this limited warranty at our discretion, but any changes will not be retroactive.



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