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Hear Technologies Hear Back PRO 4-Pack Personal Mixing System Includes 4 PRO Mixers, Pro Hub Mainframe, AES/EBU Card

SKU: HEPROHB4AE MFR: PROHB4AE
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Key Features

  • Hear Back PRO system delivers pristine sound quality for critical monitoring needs.
  • Enjoy personalized mixes with these in-ear monitors, perfect for stage or studio use.
  • Experience superior noise isolation, blocking distractions for focused performances.
  • Durable build ensures these personal mixers withstand rigorous touring and daily use.
  • Each PRO mixer offers flexible connectivity with balanced and unbalanced I/O options.
  • Customize your monitoring setup with network card options for seamless integration.
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Special Order?Estimated to Ship: 09/07/2025
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Hear Technologies Hear Back PRO Specifications

Mixer Aux Input

Mixer Aux Input

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  • Line Input Configuration/Impedance

    1/8" Stereo, unbalanced, 10K ohms typical

  • Line Input Level

    0 dBu optimal, +18 dBu max

  • Mic Input Configuration/Impedance

    XLR Mono, balanced, 150 ohms typical, 150 Hz high pass

  • Mic Input Level

    42 dBu optimal, -30 dBu max

Mixer Headphone Power

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  • Load Impedance

    THD less than 0.01%

  • Output Power

    @ 8 Ohms: 1.2 W (THD <0.015%), 1.5 W (THD <0.1%)
    @ 16 Ohms: 1.6 W (THD <0.01%), 1.8 W (THD <0.1%)
    @ 25 Ohms: 2 W (THD <0.01%), 2.2 W (THD <0.1%)
    @ 32 Ohms: 1.8 W (THD <0.01%), 2 W (THD <0.1%)
    @ 50 Ohms: 1.5 W (THD <0.01%), 1.6 W (THD <0.1%)
    @ 100 Ohms: 1.1 W (THD <0.01%), 1.2 W (THD <0.1%)
    @ 200 Ohms: 500 mW (THD <0.01%), 650 mW (THD <0.1%)
    @ 600 Ohms: 220 mW (THD <0.01%), 250 mW (THD <0.1%)

Mixer Line Output

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  • Freq Response

    20 Hz to 20 KHz, +/-0.15 dB

  • THD+N

    0.004% typical at 1 kHz, +15 dBu
    0.008% typical, 20 Hz - 20 kHz, +4 dBu

  • IMD

    0.02% typical at +4 dBu, 60 Hz / 7 kHz

  • Crosstalk

    Less than -93 dB @ 1 kHz

  • Propagation Delay

    Less than 0.25 mSec @ 192 kHz sample rate

System Noise Performance

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  • Noise, A-Weighted

    -93 dBu @ 192 kHz sample rate

  • Dynamic Range

    117 dB typical

System I/O

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  • Hub Line In, 2x Analog Input Cards

    16 Balanced inputs on 2x DB-25 female (DA-88 pinout)

  • Hub Maximum Input Level, Analog

    +18 dBu

  • Hub HBus In, Out

    8-pin RJ45 jack (standard Ethernet pinout)

  • Hub USB Port

    USB 2.0 (for firmware updates)

  • Hub Card Slots

    4x Each slot can accept an analog or digital input card, output card, or 8 port Mixer network card

  • Mixer to Hub Connection

    8-pin RJ45 jack (8x Mixer connections per network card)

  • Mixer Headphone Out

    TRS 1/4" and 1/8" unbalanced stereo

  • Mixer Line Out

    TRS 1/4" balanced (2 connections: left/mono and right)

  • Mixer Max Output Level, Analog

    +24 dBu (mixed output)

  • Mixer Aux Input

    TRS 1/8" unbalanced stereo and XLR balanced mono (with 15 volts phantom power)

  • Mixer Card Slot

    For future digital or analog input/output expansion capabilities or side-car add-on

  • Hub Power Requirements

    48VDC, 150 Watts (each external power supply powers up to 16 Mixers)

  • Mixer Power Requirements

    Power over Ethernet (PoE) 36-52 volts DC, 15 Watts max provided by Hub through Cat5e/6 network cabling

  • External Power Supply Requirements

    Input Voltage: 90VAC to 264VAC 50/60 Hz

Physical

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  • Mounting

    Mixer: Standard mic stand (5/8" 27 threads per inch) or desk mounted
    Hub: Standard rack mount, 1 RU

  • Dimensions (H x W x D)

    Mixer: 9.5 x 5.95 x 2.71" (241 x 152 x 68.8mm)
    Hub: 1.75 x 19 x 8.5" (44.5 x 483 x 216mm)

  • Weight

    Mixer: 1.6 lb (0.72kg)
    Hub: 6.3 lb (2.8kg)

  • UPC Code

    812737001201

About Hear Technologies Hear Back PRO

Where precision and versatility meet, the Hear Back PRO 4-Pack Personal Mixing System stands out as the ultimate solution for professional audio monitoring. This state-of-the-art system is designed to cater to the needs of musicians and audio engineers alike, offering a seamless and intuitive experience that requires no steep learning curve, even for those new to personal mixers.

The Hear Back PRO system is built on a robust Gigabit Ethernet network, ensuring rapid and reliable audio data transmission and setting the stage for a wide array of future enhancements. The core components of this system are the PRO Hub Mainframe and the PRO Mixers, which together create a powerful and flexible audio monitoring environment.

The PRO Hub Mainframe is the heart of the system, featuring a modular design with four card slots that can be customized with various input and output cards to suit any setup. The Hub is capable of powering and sending signals to up to 32 PRO Mixers, with each mixer connecting via a single standard Cat5E/6 cable for simplicity and ease of setup. For larger configurations, the HBus In/Out ports allow for daisy-chaining multiple Hubs, enabling virtually unlimited system expansion.

With the latest V5 Firmware, the Hear Back PRO system becomes even more dynamic. Each PRO Mixer knob can be assigned to control any mono channel, a stereo pair, or a submix of up to 16 channels. This flexibility allows for personalized configurations and the ability to add up to 128 input channels to the system by incorporating additional Input Cards and Hubs.

Key features of the Hear Back PRO system include:
- Panning width and stereo placement for precise audio imaging.
- Solo in place functionality for isolating individual channels.
- Multiple intercom capabilities for clear communication between users.
- The ability to copy and paste presets from one Mixer to another for quick setup.
- Signal presence indicators on all channels for at-a-glance monitoring.
- Grouping function to synchronize settings across multiple Mixers.
- An iOS App for convenient remote control and ease of use.

The PRO Mixer itself is a powerhouse, with Firmware V5 or later offering local control of up to 138 channels of audio, including a stereo AUX IN and up to four stereo intercom inputs. Users can submix up to 16 stereo channels on each of the 16 knobs, providing unparalleled control over their mix. The Mixer also boasts high-quality 24-bit Delta-Sigma D/A and A/D converters, storage for up to four recallable presets, and both 1/8" and 1/4" headphone outputs with ample power.

The PRO Hub Mainframe, with Firmware V5 or later, supports up to 32 input channels per Hub and allows for daisy-chaining of multiple Hubs for extensive input channel configurations. It also offers a selection of user-selectable sample rates and features 16 RGB LEDs for intuitive channel metering.

The AES/EBU Card included in the system enables the PRO Hub to interface with professional audio equipment using the multi-channel AES/EBU protocol. This card can be configured as either 16 inputs or 16 outputs and supports a range of sampling rates for maximum compatibility.

Lastly, the Network Card is essential for connecting the PRO Mixers, providing PoE+ power and digital audio over a single Cat6 Ethernet cable, capable of runs up to 566 feet. This card's inclusion ensures that the Hear Back PRO system is not only powerful but also highly scalable and adaptable to any professional audio environment.

The Hear Back PRO 4-Pack Personal Mixing System is engineered for those who demand the best in audio monitoring, offering a comprehensive, modular, and user-friendly solution that stands the test of time.

Hear Technologies Hear Back PRO Features

  • Modular I/O Hub card system allows for system customization
  • Large master knob controls overall main mix, AUX, and intercom levels independently
  • Volume and panning control of all channels
  • Direct and immediate visual feedback of all channels
  • Support for sampling rates up to 192 kHz
  • Selectable XLR or 1/8" Mixer AUX input
  • Built-in intercom broadcasts the AUX source (mic, MP3 player, click, etc.)
  • Intercom auto adjusts its own level so even the quietest message never goes unheard
  • Supports secondary power supply to provide redundancy and power to up to 32 Mixers
  • USB port on Hub makes updating firmware for future features and upgrades a simple drag-and-drop operation
  • HBUS In/Out connections allow daisy-chaining Hubs and a wireless access point connection for use with the PRO's iOS App
  • Side-mounted card slot on Mixer for future expansion
  • Status indicating logos on Hub and Mixers make it easy to detect and diagnose problems, should they arise
  • Hear Back PRO iOS App allows for complete control of all Mixers connected to the network
  • Write session info and channel settings on storable Mixer overlays for an unlimited number of presets
  • Instantly store and recall presets from memory with the push of a button
  • Most recent configuration is saved, even after power-down

Product Documents

User Manual

Key Features

  • Hear Back PRO system delivers pristine sound quality for critical monitoring needs.
  • Enjoy personalized mixes with these in-ear monitors, perfect for stage or studio use.
  • Experience superior noise isolation, blocking distractions for focused performances.
  • Durable build ensures these personal mixers withstand rigorous touring and daily use.
  • Each PRO mixer offers flexible connectivity with balanced and unbalanced I/O options.
  • Customize your monitoring setup with network card options for seamless integration.

What's in the box:

  • 4x PRO Hear Back Mixers
  • PRO Hear Back Hub Mainframe
  • AES/EBU Card
  • Network Card
  • 4x 50' Cat6 Cables
  • Hear Technologies 1 Year Limited Warranty