iFi Audio SilentPower iDefender Max USB-C Ground Loop Breaker
iFi iDefender Max - USB-C Ground Loop Breaker
The SilentPower iDefender Max is an intelligent USB-C ground loop breaker designed to eliminate distracting hum and noise in computer-based audio systems. When multiple devices and power plugs create excess earth connections, ground loop noise can creep into your signal chain and show up as an annoying low-frequency buzz in speakers or headphones. iDefender Max intelligently removes unwanted earth connections to restore clean, quiet playback—so your USB audio sounds the way it should.
Built with SilentPower’s IsoGround® Technology, iDefender Max breaks ground-loop interference without compromising safety. Unlike basic “ground lift” solutions, it can automatically reestablish the earth connection if a current-related fault is detected, helping ensure excess current is directed to earth rather than your connected gear. It also includes USB Noise Termination® to reduce noise from USB power at the source, plus a dedicated external USB-C power input that bypasses USB power from the computer—letting you upgrade performance further with a cleaner external supply.
Whether you’re running a USB DAC, headphone amp, powered speakers, or a broader USB-C setup, iDefender Max supports up to 100W (20V/5A) and maintains USB 3.0 compatibility (with backward compatibility to USB 2.0), helping preserve high-speed data transfer and reliable high-resolution playback.
What It's Good At:
- Eliminating ground loop hum/buzz in USB-C computer audio setups for quieter listening
- Intelligently lifting unwanted earth connections while maintaining user and equipment safety
- Reducing USB power noise at the input for cleaner, more “black background” playback
- Enabling higher-performance setups via external USB-C power input (bypass noisy PC USB power)
- Supporting up to 100W (20V/5A), expanding compatibility beyond typical USB DAC use
- Preserving USB 3.0 data performance (with USB 2.0 backward compatibility) for stable playback
iFi iDefender Max Full Specifications:
- Product Name: iDefender Max
- SKU: 03-20-002-0001-00
- Type: Intelligent USB-C ground loop breaker
-
Key Technologies/Functions:
- IsoGround® Technology (intelligently removes earth connection without compromising safety)
- USB Noise Termination® (removes noise from USB power at the source)
- External USB-C Power Input (bypasses USB power from the connected PC; supports clean external supply use)
- Safety Function: Automatically reestablishes earth connection when a current-related fault is detected
- Input/Output: USB-C
- Compatibility: USB 3.0 (backwards compatible with USB 2.0)
- Max Power Support: Up to 100W (20V/5A)
- Dimensions: 51.3 × 20 × 12 mm (2.0 × 0.8 × 0.5”)
- Net Weight: 21 g (0.74 oz)
- Limited Warranty: 12 months
-
What’s in the Box:
- 1 Ă— iDefender Max
- 1 Ă— Instruction Card
- Note: The image colour may differ from the actual product due to lighting. Please refer to the product for accuracy.
iFi iDefender Max Q&A:
- What does the iDefender Max do in an audio setup?
- It breaks USB-C ground loops that commonly cause hum or buzz in computer-based audio systems, helping restore quieter, cleaner playback.
- How do you connect the iDefender Max?
- Place it inline between your computer and your USB device—connect it between the USB-C source and the USB device to help eliminate ground-loop noise.
- Will it affect USB audio quality or high-resolution playback?
- It’s designed to maintain USB data performance while reducing noise and ground-loop interference, supporting USB 3.0 with backward compatibility to USB 2.0.
- Is the iDefender Max safe compared to basic ground-lift adapters?
- Yes—its design is intended to avoid compromising safety by automatically reestablishing the earth connection if a current-related fault is detected.
- Do I need an external power supply to use it?
- No—external USB-C power is optional. The external USB-C power input is there if you want to bypass USB power from the PC and use a cleaner supply.
- What kinds of devices can it work with?
- It’s built for USB-C connections and supports up to 100W (20V/5A), making it compatible with a wide range of USB-C devices and not limited to only USB DAC use.
- What is USB Noise Termination® used for?
- It helps remove noise riding on USB power right at the source, reducing the chance of power-related noise bleeding into your audio chain.
- What warranty coverage comes with the iDefender Max?
- It includes a 12-month limited warranty.
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iFi Audio SilentPower iDefender Max USB-C Ground Loop Breaker
iFi iDefender Max - USB-C Ground Loop Breaker
The SilentPower iDefender Max is an intelligent USB-C ground loop breaker designed to eliminate distracting hum and noise in computer-based audio systems. When multiple devices and power plugs create excess earth connections, ground loop noise can creep into your signal chain and show up as an annoying low-frequency buzz in speakers or headphones. iDefender Max intelligently removes unwanted earth connections to restore clean, quiet playback—so your USB audio sounds the way it should.
Built with SilentPower’s IsoGround® Technology, iDefender Max breaks ground-loop interference without compromising safety. Unlike basic “ground lift” solutions, it can automatically reestablish the earth connection if a current-related fault is detected, helping ensure excess current is directed to earth rather than your connected gear. It also includes USB Noise Termination® to reduce noise from USB power at the source, plus a dedicated external USB-C power input that bypasses USB power from the computer—letting you upgrade performance further with a cleaner external supply.
Whether you’re running a USB DAC, headphone amp, powered speakers, or a broader USB-C setup, iDefender Max supports up to 100W (20V/5A) and maintains USB 3.0 compatibility (with backward compatibility to USB 2.0), helping preserve high-speed data transfer and reliable high-resolution playback.
What It's Good At:
- Eliminating ground loop hum/buzz in USB-C computer audio setups for quieter listening
- Intelligently lifting unwanted earth connections while maintaining user and equipment safety
- Reducing USB power noise at the input for cleaner, more “black background” playback
- Enabling higher-performance setups via external USB-C power input (bypass noisy PC USB power)
- Supporting up to 100W (20V/5A), expanding compatibility beyond typical USB DAC use
- Preserving USB 3.0 data performance (with USB 2.0 backward compatibility) for stable playback
iFi iDefender Max Full Specifications:
- Product Name: iDefender Max
- SKU: 03-20-002-0001-00
- Type: Intelligent USB-C ground loop breaker
-
Key Technologies/Functions:
- IsoGround® Technology (intelligently removes earth connection without compromising safety)
- USB Noise Termination® (removes noise from USB power at the source)
- External USB-C Power Input (bypasses USB power from the connected PC; supports clean external supply use)
- Safety Function: Automatically reestablishes earth connection when a current-related fault is detected
- Input/Output: USB-C
- Compatibility: USB 3.0 (backwards compatible with USB 2.0)
- Max Power Support: Up to 100W (20V/5A)
- Dimensions: 51.3 × 20 × 12 mm (2.0 × 0.8 × 0.5”)
- Net Weight: 21 g (0.74 oz)
- Limited Warranty: 12 months
-
What’s in the Box:
- 1 Ă— iDefender Max
- 1 Ă— Instruction Card
- Note: The image colour may differ from the actual product due to lighting. Please refer to the product for accuracy.
iFi iDefender Max Q&A:
- What does the iDefender Max do in an audio setup?
- It breaks USB-C ground loops that commonly cause hum or buzz in computer-based audio systems, helping restore quieter, cleaner playback.
- How do you connect the iDefender Max?
- Place it inline between your computer and your USB device—connect it between the USB-C source and the USB device to help eliminate ground-loop noise.
- Will it affect USB audio quality or high-resolution playback?
- It’s designed to maintain USB data performance while reducing noise and ground-loop interference, supporting USB 3.0 with backward compatibility to USB 2.0.
- Is the iDefender Max safe compared to basic ground-lift adapters?
- Yes—its design is intended to avoid compromising safety by automatically reestablishing the earth connection if a current-related fault is detected.
- Do I need an external power supply to use it?
- No—external USB-C power is optional. The external USB-C power input is there if you want to bypass USB power from the PC and use a cleaner supply.
- What kinds of devices can it work with?
- It’s built for USB-C connections and supports up to 100W (20V/5A), making it compatible with a wide range of USB-C devices and not limited to only USB DAC use.
- What is USB Noise Termination® used for?
- It helps remove noise riding on USB power right at the source, reducing the chance of power-related noise bleeding into your audio chain.
- What warranty coverage comes with the iDefender Max?
- It includes a 12-month limited warranty.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
iFi iDefender Max - USB-C Ground Loop Breaker
The SilentPower iDefender Max is an intelligent USB-C ground loop breaker designed to eliminate distracting hum and noise in computer-based audio systems. When multiple devices and power plugs create excess earth connections, ground loop noise can creep into your signal chain and show up as an annoying low-frequency buzz in speakers or headphones. iDefender Max intelligently removes unwanted earth connections to restore clean, quiet playback—so your USB audio sounds the way it should.
Built with SilentPower’s IsoGround® Technology, iDefender Max breaks ground-loop interference without compromising safety. Unlike basic “ground lift” solutions, it can automatically reestablish the earth connection if a current-related fault is detected, helping ensure excess current is directed to earth rather than your connected gear. It also includes USB Noise Termination® to reduce noise from USB power at the source, plus a dedicated external USB-C power input that bypasses USB power from the computer—letting you upgrade performance further with a cleaner external supply.
Whether you’re running a USB DAC, headphone amp, powered speakers, or a broader USB-C setup, iDefender Max supports up to 100W (20V/5A) and maintains USB 3.0 compatibility (with backward compatibility to USB 2.0), helping preserve high-speed data transfer and reliable high-resolution playback.
What It's Good At:
- Eliminating ground loop hum/buzz in USB-C computer audio setups for quieter listening
- Intelligently lifting unwanted earth connections while maintaining user and equipment safety
- Reducing USB power noise at the input for cleaner, more “black background” playback
- Enabling higher-performance setups via external USB-C power input (bypass noisy PC USB power)
- Supporting up to 100W (20V/5A), expanding compatibility beyond typical USB DAC use
- Preserving USB 3.0 data performance (with USB 2.0 backward compatibility) for stable playback
iFi iDefender Max Full Specifications:
- Product Name: iDefender Max
- SKU: 03-20-002-0001-00
- Type: Intelligent USB-C ground loop breaker
-
Key Technologies/Functions:
- IsoGround® Technology (intelligently removes earth connection without compromising safety)
- USB Noise Termination® (removes noise from USB power at the source)
- External USB-C Power Input (bypasses USB power from the connected PC; supports clean external supply use)
- Safety Function: Automatically reestablishes earth connection when a current-related fault is detected
- Input/Output: USB-C
- Compatibility: USB 3.0 (backwards compatible with USB 2.0)
- Max Power Support: Up to 100W (20V/5A)
- Dimensions: 51.3 × 20 × 12 mm (2.0 × 0.8 × 0.5”)
- Net Weight: 21 g (0.74 oz)
- Limited Warranty: 12 months
-
What’s in the Box:
- 1 Ă— iDefender Max
- 1 Ă— Instruction Card
- Note: The image colour may differ from the actual product due to lighting. Please refer to the product for accuracy.
iFi iDefender Max Q&A:
- What does the iDefender Max do in an audio setup?
- It breaks USB-C ground loops that commonly cause hum or buzz in computer-based audio systems, helping restore quieter, cleaner playback.
- How do you connect the iDefender Max?
- Place it inline between your computer and your USB device—connect it between the USB-C source and the USB device to help eliminate ground-loop noise.
- Will it affect USB audio quality or high-resolution playback?
- It’s designed to maintain USB data performance while reducing noise and ground-loop interference, supporting USB 3.0 with backward compatibility to USB 2.0.
- Is the iDefender Max safe compared to basic ground-lift adapters?
- Yes—its design is intended to avoid compromising safety by automatically reestablishing the earth connection if a current-related fault is detected.
- Do I need an external power supply to use it?
- No—external USB-C power is optional. The external USB-C power input is there if you want to bypass USB power from the PC and use a cleaner supply.
- What kinds of devices can it work with?
- It’s built for USB-C connections and supports up to 100W (20V/5A), making it compatible with a wide range of USB-C devices and not limited to only USB DAC use.
- What is USB Noise Termination® used for?
- It helps remove noise riding on USB power right at the source, reducing the chance of power-related noise bleeding into your audio chain.
- What warranty coverage comes with the iDefender Max?
- It includes a 12-month limited warranty.
