Sennheiser

Sennheiser 509171 Wireless In-Ear Audio Monitor, Black

4.2 (205 reviews)
2 in

Unleash the Power of Precise Audio Monitoring The Sennheiser IE 100 PRO Wireless In-Ear Audio Monitor delivers exceptional sound clarity and wearing comfort, designed for musicians and DJs who demand high-quality audio monitoring in live sessions and studio production. Specifications: Transd...

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*Price sourced from Amazon.com. Last updated:Jun 19, 2026.Price and availability are subject to change.

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Overview

Unleash the Power of Precise Audio Monitoring

The Sennheiser IE 100 PRO Wireless In-Ear Audio Monitor delivers exceptional sound clarity and wearing comfort, designed for musicians and DJs who demand high-quality audio monitoring in live sessions and studio production.

Specifications:

  • Transducer: Dynamic full-range transducer for high-resolution, powerful monitoring sound
  • Connectivity: 2 in 1 bundle - Bluetooth module for wireless connection, 3.5 mm jack-plug cable
  • Shielding: Excellent shielding through optimized earpiece shape and flexible silicone and foam attachments
  • Reproduction: Reduces acoustic stress factors through natural and distortion-free reproduction
  • Battery Life: 10 hours of continuous use with rechargeable battery
  • Frequency Range: 20 Hz to 18 kHz
  • Headphone Jack: 3.5 mm Jack
  • Color: Black

Key Features

Dynamic full-range transducer for high-resolution, powerful monitoring sound

2 in 1 bundle: Bluetooth module for wireless connection to mobile devices, PCs or tablets, with a built-in microphone for calls or standard 3.5 mm jack-plug cable

Excellent shielding through optimized earpiece shape and flexible silicone and foam attachments

Reduces acoustic stress factors through natural and distortion-free reproduction

10 hours of continuous use with rechargeable battery

Specifications

Transducer Type
Dynamic full-range
Connectivity Options
Bluetooth module, 3.5 mm jack-plug cable
Bluetooth Module Feature
Built-in microphone for calls
Battery Life (Bluetooth)
10 hours continuous use
Ear Tip Material
Flexible silicone and foam attachments
Sound Reproduction
Natural and distortion-free
Color
Black

Pros & Cons

👍 Pros

  • Equipped with a dynamic full-range transducer for high-resolution, powerful monitoring sound.
  • Offers versatile 2-in-1 connectivity, including a Bluetooth module for wireless use and a standard 3.5 mm jack-plug cable.
  • Features a built-in microphone on the Bluetooth module, enabling convenient calls with mobile devices.
  • Designed with an optimized earpiece shape and flexible silicone and foam attachments for excellent sound shielding.
  • Provides natural and distortion-free audio reproduction, aimed at reducing acoustic stress factors.

👎 Cons

  • The Bluetooth module's rechargeable battery provides 10 hours of continuous use, which may require regular charging for frequent users.
  • The "excellent shielding" provided is passive, meaning it does not offer active noise cancellation for complete environmental silence.
  • The sound quality via Bluetooth might have limitations compared to the direct wired connection, as is common with wireless audio.
  • Compatibility with different ear shapes for optimal fit and seal, despite optimized design, can be subjective for individual users.
  • The product is presented as an in-ear monitor, which may not appeal to users who prefer other headphone styles.

Frequently Asked Questions

The Sennheiser 509171 features a dynamic full-range transducer engineered for high-resolution, powerful monitoring sound with natural and distortion-free reproduction.
Yes, it comes as a 2-in-1 bundle, providing a Bluetooth module for wireless connection to mobile devices and a standard 3.5 mm jack-plug cable for wired use.
Yes, the Bluetooth module includes a built-in microphone, allowing you to make calls when connected wirelessly to your mobile device.
The rechargeable battery for the Bluetooth module offers 10 hours of continuous use.
It achieves excellent shielding through its optimized earpiece shape combined with flexible silicone and foam attachments, which help to block external noise.