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From amplifiers to sleep systems to EMG machines, we have the new, used and refurbished medical devices your organization needs. Whether you need a wide range of used medical equipment or are looking for medical equipment for sale, browse our site now for a wide range of products and models from the world’s most trusted manufacturers, including Natus, Cadwell, Nihon Kohden, Philips Respironics, Viasys, Compumedics, and more.

Whether you need to upgrade equipment or find quality used EEG equipment for sale, shop reLink Medical now for one of the widest selections in the industry.

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EEG / EMG Sleep Systems

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    Cadwell Laboratories Inc. Sierra Summit EMG System

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    OEM: Cadwell Laboratories Inc.Material: Sierra Summit Common Name: EMG System Item Weight: 7 Serial Number: 19027200AC1213020 SKU#: Inv-00594611 Po...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Manufactured Date: 2019-10-29 Item Weight: 3.4 Serial Number: 21016862...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Item Weight: 3.6 Serial Number: 21016862122675 SKU#: Inv-00599429 Powe...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Item Weight: 3.6 Serial Number: 21016862208659 SKU#: Inv-00599422 Powe...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Manufactured Date: 2019-10-29 Item Weight: 3.8 Serial Number: 21016862...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Manufactured Date: 2019-09-30 Item Weight: 5.2 Serial Number: 01686212...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Manufactured Date: 2019-09-30 Item Weight: 5.2 Serial Number: 01686212...

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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Item Weight: 5.2 Serial Number: 016862122458 SKU#: Inv-00596863 Powers...

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  • Natus Natus Quantum 016862 Base Unit EEG EMG Sleep Systems reLink Medical
    Natus Natus Quantum 016862 Base Unit EEG EMG Sleep Systems reLink Medical
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    Natus Quantum 016862 Base Unit

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    OEM: NatusMaterial: Quantum 016862 Common Name: Base Unit Model Name: 016862 Item Weight: 5 Serial Number: 016862133292 SKU#: Inv-00578470 Powers O...

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  • Natus Natus 002980 Xltek Protektor 32 Acquisition EEG EMG Sleep Systems reLink Medical
    Natus Natus 002980 Xltek Protektor 32 Acquisition EEG EMG Sleep Systems reLink Medical
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    Natus 002980 Xltek Protektor 32 Acquisition

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    OEM: NatusMaterial: 002980 Xltek Common Name: Protektor 32 Acquisition Manufactured Date: 2016-11-22 Item Weight: 6 Serial Number: 002980F0719 SKU#...

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    Natus WR50 Comfort Probe Plus

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    OEM: NatusMaterial: WR50 Common Name: Comfort Probe Plus Model Name: 515-016400 Item Weight: 1 Serial Number: (11) 170630 SKU#: Inv-00577192 Powers...

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    Natus WR50 Comfort Probe Plus

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    OEM: NatusMaterial: WR50 Common Name: Comfort Probe Plus Model Name: 515-016400 Item Weight: 1 Serial Number: 170630 SKU#: Inv-00577188 Powers On: ...

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    Cadwell Laboratories Inc. Sierra II Wave Console

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    OEM: Cadwell Laboratories Inc.Material: Sierra II Wave Common Name: Console Item Weight: 6 Serial Number: NONE SKU#: Inv-00414785 Powers On: Yes In...

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  • Neurovirtual USA Inc Neurovirtual USA Inc BWII PSG Electroencephalograph EEG EMG Sleep Systems reLink Medical
    Neurovirtual USA Inc Neurovirtual USA Inc BWII PSG Electroencephalograph EEG EMG Sleep Systems reLink Medical
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    Neurovirtual USA Inc BWII PSG Electroencephalograph

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    OEM: Neurovirtual USA IncMaterial: BWII PSG Common Name: Electroencephalograph Item Weight: 3 Serial Number: BWII2014-3366 SKU#: Inv-00468981 Power...

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  • Natus Natus 515-016700 EMG USB Control Panel EEG EMG Sleep Systems reLink Medical
    Natus Natus 515-016700 EMG USB Control Panel EEG EMG Sleep Systems reLink Medical
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    Natus 515-016700 EMG USB Control Panel

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    OEM: NatusMaterial: 515-016700 EMG Common Name: USB Control Panel Model Name: 515-016700 Item Weight: 1 Serial Number: 170829 SKU#: Inv-00577061 Po...

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  • Natus Natus Brain Monitor 021911 Breakout Box EEG EMG Sleep Systems reLink Medical
    Natus Natus Brain Monitor 021911 Breakout Box EEG EMG Sleep Systems reLink Medical
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    Natus Brain Monitor 021911 Breakout Box

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    OEM: NatusMaterial: Brain Monitor 021911 Common Name: Breakout Box Item Weight: 1 Serial Number: 021911130661 SKU#: Inv-00572844 Powers On: Unable ...

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  • Neurovirtual USA Inc Neurovirtual USA Inc BWII PSG Electroencephalograph EEG EMG Sleep Systems reLink Medical
    Neurovirtual USA Inc Neurovirtual USA Inc BWII PSG Electroencephalograph EEG EMG Sleep Systems reLink Medical
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    Neurovirtual USA Inc BWII PSG Electroencephalograph

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    OEM: Neurovirtual USA IncMaterial: BWII PSG Common Name: Electroencephalograph Item Weight: 3 Serial Number: BWII2014-3359 SKU#: Inv-00468645 Power...

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  • Neurovirtual USA Inc Neurovirtual USA Inc BWII PSG Electroencephalograph EEG EMG Sleep Systems reLink Medical
    Neurovirtual USA Inc Neurovirtual USA Inc BWII PSG Electroencephalograph EEG EMG Sleep Systems reLink Medical
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    Neurovirtual USA Inc BWII PSG Electroencephalograph

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    OEM: Neurovirtual USA IncMaterial: BWII PSG Common Name: Electroencephalograph Item Weight: 3 Serial Number: BWII2014-3418 SKU#: Inv-00468936 Power...

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    Neurovirtual USA Inc BWII PSG Electroencephalograph

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    OEM: Neurovirtual USA IncMaterial: BWII PSG Common Name: Electroencephalograph Item Weight: 3 Serial Number: BWII2015-3439 SKU#: Inv-00468958 Power...

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  • Natus Natus EMU40EX Breakout Box EEG EMG Sleep Systems reLink Medical
    Natus Natus EMU40EX Breakout Box EEG EMG Sleep Systems reLink Medical
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    Natus EMU40EX Breakout Box

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    OEM: NatusMaterial: EMU40EX Breakout Box Common Name: Model Name: 006562 Item Weight: 1 Serial Number: NONE SKU#: Inv-00572511 Powers On: Unable t...

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    Natus EMU40EX Breakout Box

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    OEM: NatusMaterial: EMU40EX Breakout Box Common Name: Model Name: 006562 Item Weight: 1 Serial Number: 006562E31231 SKU#: Inv-00572492 Powers On: ...

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  • Natus Natus EMU40EX Breakout Box EEG EMG Sleep Systems reLink Medical
    Natus Natus EMU40EX Breakout Box EEG EMG Sleep Systems reLink Medical
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    Natus EMU40EX Breakout Box

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    OEM: NatusMaterial: EMU40EX Breakout Box Common Name: Model Name: 006562 Item Weight: 1 Serial Number: 006562E31236 SKU#: Inv-00572478 Powers On: ...

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  • Natus Natus EMU40EX Breakout Box EEG EMG Sleep Systems reLink Medical
    Natus Natus EMU40EX Breakout Box EEG EMG Sleep Systems reLink Medical
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    Natus EMU40EX Breakout Box

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    OEM: NatusMaterial: EMU40EX Breakout Box Common Name: Model Name: 006562 Manufactured Date: 2022-12-15 Item Weight: 1 Serial Number: 028066032109 ...

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    Philips Respironics Alice 6 LDx Sleep System

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    OEM: PhilipsMaterial: Respironics Alice 6 LDx Common Name: Sleep System Item Weight: 8 Serial Number: 110564 SKU#: Inv-00574378 Powers On: Yes Incl...

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What are EEG and EMG Machines?

EEG and EMG machines are diagnostic tools used in clinical practice to monitor and evaluate electrical activity in the brain and muscles. An EEG machine (electroencephalogram) records brain wave patterns through surface electrodes placed on the scalp, helping detect abnormalities in brain activity, such as epilepsy, brain disorders, or sleep irregularities. It’s frequently used in settings ranging from routine EEG testing to monitoring in medically induced coma cases.

EMG (electromyography) devices measure electrical signals produced by muscle contractions, helping diagnose neuromuscular conditions such as ALS or nerve damage. EEG systems are also available in ambulatory EEG formats, allowing patients to undergo testing while continuing daily activities. These devices generate crucial EEG signals and EEG data used by neurologists to guide diagnosis and care. Together, they support a better understanding of neurological and muscular health.

Key Differences Between EEG and EMG Machines

While both EEG and EMG machines monitor electrical signals, they differ in purpose, signal type, and application. EEG machines focus on brain activity and neurological disorders by detecting brain wave patterns using EEG electrodes placed on the scalp. This allows clinicians to identify abnormalities like seizures, brain injuries, or sleep disturbances. EEG recording is non-invasive and offers high temporal resolution, ideal for observing rapid changes in brain function.

EMG machines, by contrast, monitor muscle activity. They detect electrical impulses in response to nerve stimulation, helping identify conditions like carpal tunnel syndrome or muscular dystrophy. EMG involves inserting small electrodes into muscle tissue or applying surface electrodes, depending on the procedure.

While EEG systems are more relevant for conditions like epilepsy, EMG is tailored for assessing neuromuscular disorders.

Top Performance Features for EEG and EMG Systems

When choosing EEG or EMG systems, key features enhance accuracy and usability. For EEG machines, look for models with high channel counts to support multi-site EEG recording and detect complex brain wave patterns. Sleep EEG studies may also require long-duration capabilities and portable systems for overnight monitoring. Ambulatory EEG units are ideal for extended outpatient testing, giving flexibility and comfort to patients.

Advanced EEG systems should include user-friendly interfaces, real-time EEG data display, and software that supports artifact filtering and automated event marking. For EMG, essential features include multiple input channels, customizable stimulation settings, and integration with nerve conduction testing. Systems that synchronize with imaging or video provide additional value during detailed evaluations. Compatibility with cloud storage, remote access, and EMR systems improves diagnostic workflows and data sharing across departments.

Maintaining and Calibrating EEG / EMG Machines

Maintaining EEG and EMG machines is crucial for performance and patient safety. Routine calibration ensures accurate signal readings, especially vital for EEG tests detecting subtle brain wave patterns or EMG procedures measuring muscle responsiveness. Regular cleaning of EEG electrodes and cable checks helps reduce noise interference and extend equipment life.

It’s also important to follow manufacturer guidelines for software updates and data security, especially for units storing sensitive patient records. For sleep EEG and ambulatory EEG units, verify battery health, memory capacity, and proper charging cycles to avoid disruptions. Clinical teams should document all calibration efforts and schedule periodic inspections, ideally in partnership with biomedical technicians.

Preventive maintenance reduces equipment downtime, supports regulatory compliance, and protects the integrity of EEG signals and EMG recordings in fast-paced clinical practice.

Understanding Cost Implications

The cost of EEG and EMG machines varies widely based on capabilities, channel count, brand, and whether the equipment is new or refurbished. Entry-level EEG machines for routine EEG tests may start around $5,000–$10,000, while advanced EEG systems with long-term monitoring and video integration can exceed $25,000. Ambulatory EEG units also vary, depending on battery life, channel support, and wireless features.

EMG devices with nerve conduction capabilities and dual-mode support typically range from $10,000 to $30,000. Additional costs may include EEG electrodes, data management software, training, and servicing. Long-term value comes from selecting equipment suited to your clinical practice, with features that support your diagnostic volume.

Refurbished systems offer cost savings without sacrificing performance — a smart choice for clinics managing budgets while aiming to provide high-quality neurological care.

Frequently Asked Questions

What is better, MRI or EEG? +

MRI and EEG serve different diagnostic needs. EEG records real-time brain wave activity, making it ideal for detecting seizures, sleep disorders, or monitoring brain function in critical care. MRI offers detailed structural imaging of the brain, helping detect tumors, bleeding, or damage. The better option depends entirely on what condition or concern a clinician needs to investigate.

What does the EEG machine do? +

An EEG machine monitors and records the brain’s electrical activity through electrodes placed on the scalp. It captures EEG signals to detect brain wave abnormalities, aiding in diagnosing epilepsy, sleep disorders, and other neurological conditions. EEG systems help clinicians interpret brain function patterns, track progress, and adjust treatments, especially in settings involving brain injuries or medically induced coma cases.

How much does an EMG device cost? +

EMG machines can range from $10,000 to over $30,000, depending on features, channel count, and whether the system includes nerve conduction testing capabilities. Portable EMG units and refurbished systems tend to cost less, offering flexibility for smaller practices. Additional expenses may include accessories, software licensing, maintenance plans, and training.

What types of EMG machines do we offer? +

reLinkOnline offers a variety of EMG machines designed for both inpatient and outpatient clinical settings. Our inventory includes multi-channel systems, portable EMG units, and models with integrated nerve conduction studies. All new and refurbished EMG machines meet high standards for signal accuracy and reliability, making them a strong fit for neurologists and health care providers treating muscular or nerve-related disorders.

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From amplifiers to sleep systems to EMG machines, we have the new, used and refurbished medical devices your organization needs. Whether you need a wide range of used medical equipment or are looking for medical equipment for sale, browse our site now for a wide range of products and models from the world’s most trusted manufacturers, including Natus, Cadwell, Nihon Kohden, Philips Respironics, Viasys, Compumedics, and more.

Whether you need to upgrade equipment or find quality used EEG equipment for sale, shop reLink Medical now for one of the widest selections in the industry.

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