iFi Audio SilentPower iSilencer+ USB Noise Filter

iFi SilentPower iSilencer+

The SilentPower iSilencer+ is a compact USB noise-reduction adapter designed to clean up electrical interference that can ride along USB connections and degrade audio performance. USB carries both power and data, which can introduce unwanted noise (including EMI/RFI) from computers, hubs, and nearby electronics—often heard as haze, distortion, or annoying pops and clicks. Using Active Noise Cancellation II® plus REbalance® signal conditioning, iSilencer+ helps your DAC receive a cleaner, more stable digital signal for a smoother, clearer, and more natural listening experience.

Built around SuperSpeed USB 3.0 (and USB 2.0 backward compatibility) with gold-plated connectors, iSilencer+ is an easy, plug-and-play upgrade: insert it between your USB source and DAC to reduce noise at the connection point. For even more noise reduction, you can also plug additional iSilencer+ units into unused USB ports to help reduce radiated interference—an effective tweak for busy desktop setups. Small enough to disappear behind a laptop or DAC, iSilencer+ is an effortless way to make digital audio sound more refined, more transparent, and more enjoyable.

What It's Good At:

• Reduces USB-borne electrical noise (EMI/RFI) at the source for cleaner playback
• Helps eliminate pops, clicks, and distortion caused by noisy USB signal integrity
• Improves clarity, warmth, and transparency, with tighter, more confident bass response
• REbalance® signal conditioning helps deliver a more accurate digital signal to your DAC
• Plug-and-play USB upgrade—no drivers, no settings, no hassle
• Scales with your setup: add units to unused USB ports to further reduce radiated interference

iFi iSilencer+ Full Specifications:

• Product Name: SilentPower iSilencer+
• SKU (by variant):
  • USB A (male) to USB A (female): 03-06-038-0001-00
  • USB C (male) to USB A (female): 03-06-038-0002-00
  • USB C (male) to USB C (female): 03-06-038-0003-00
• Versions / Connector Options (3):
  • USB C male to USB C female
  • USB A male to USB A female
  • USB C male to USB A female
• Compatibility: Super-Speed USB3.0 (and USB2.0 backwards compatible)
• Noise-Reduction Tech: Active Noise Cancellation II® (removes electrical noise including EMI/RFI)
• Signal Conditioning: REbalance® USB signal re-balancing
• Performance Notes: Helps reduce jitter and packet errors; supports bit-perfect transfer of audio data to the DAC
• Connectors: USB3.0 gold-plated connectors
• Rating: 5V (6.3V max.) 1A
• Dimensions: 50 x 20 x 9 mm (2.0" x 5.7" x 1.6")
• Weight: 7 g (0.25 oz)
• Warranty Period: 12 months
• In the Box:
  • 1x iSilencer+
  • 1x User Manual
• Use / Placement: Insert into an unused USB port or between your USB source and DAC
• Indicator: Operational LED indicates connection between the peripheral and the device
• Tip: Not recommended for USB Power Delivery
• Warning: Exceeding voltage and current limits may damage the device
• Additional Note: Image color may differ due to lighting; refer to the product for accuracy
• Additional Note: Specifications are subject to change without notice

iFi iSilencer+ Q&A:

Which iSilencer+ connector versions are available?

There are three versions: USB C (male) to USB C (female), USB A (male) to USB A (female), and USB C (male) to USB A (female).

What does the iSilencer+ do for USB audio?

It reduces USB electrical noise (including EMI/RFI) and helps improve signal integrity so your DAC receives a cleaner, more stable digital stream.

How do you install the iSilencer+ in an audio setup?

Plug it between your USB source (computer/laptop) and your DAC. It’s plug-and-play—just insert and listen.

Can iSilencer+ be used in unused USB ports too?

Yes. Plugging iSilencer+ into unused USB ports can further reduce radiated EMI in some setups for additional noise reduction.

Is iSilencer+ compatible with USB 2.0 devices?

Yes. It supports SuperSpeed USB 3.0 and is backwards compatible with USB 2.0.

Does iSilencer+ require drivers or software?

No. It’s a hardware solution that works without drivers, apps, or configuration.

What does the LED indicate?

The operational LED indicates a connection has been made between the peripheral and the device.

Is iSilencer+ recommended for USB Power Delivery (USB-PD)?

No. It is not recommended for USB Power Delivery, and exceeding the stated voltage/current limits may damage the device.

iFi iSilencer+ Downloads:

iFi SilentPower iSilencer+ User Manual