SKU: 14016928288

MiniDSP Flex HTx DSP Processor with eARC - RCA + Balanced

$764.55 $849.50
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Description

MiniDSP Flex HTx DSP Processor with eARC - RCA + BalancedThe Flex HTx is the bigger brother of the Flex HT, targeting the need for a multichannel processor with HDMI ARC eARC capabilities and stellar analog and USB audio capabilities. Within a single rack unit, we packed all the possible connectivity we could fit. Eight channel audio input is via analog audio (RCA and TRS), eARC linear PCM over HDMI1, or USB Audio. Additional digital stereo input is supported over SPDIF and TOSLINK optical. Internally, weve

The Flex HTx is the bigger brother of the Flex HT, targeting the need for a multichannel processor with HDMI ARC/eARC capabilities and stellar analog and USB audio capabilities. Within a single rack unit, we packed all the possible connectivity we could fit.

Eight-channel audio input is via analog audio (RCA and TRS), eARC linear PCM over HDMI1, or USB Audio. Additional digital stereo input is supported over SPDIF and TOSLINK optical. Internally, we’ve provided a full suite of miniDSP’s flexible routing and audio processing features: bass management, parametric EQ, crossovers, advanced biquad programming and delay/gain adjustments. In addition, the miniDSP Flex HTx is software-upgradable with full-frequency Dirac Live®, the world’s premiere room correction system.

Continuing miniDSP’s focus on affordable high-performance audio, the Flex HTx features class-leading low noise and distortion figures. An OLED front panel display and volume control/encoder knob provides easy control.

The miniDSP Flex HTx is the perfect solution for a modern compact processor for home theater and multichannel sound.

REMINDER: Please note that the Flex HTx does not support bitstream (e.g. Dolby/DTS) decoding. The audio source must be able to output linear PCM (LPCM) for multichannel support over HDMI. 
 

Hardware Features

  • Processor: 32-bit floating-point 400MHz Analog Devices SHARC DSP
  • Multi-Core USB Audio processor (XMOS)
  • HDMI EARC/ARC interface for multichannel audio in PCM. Note that Flex HTx doesn't support bistream format (Dolby/DTS encoded). 
  • Optional upgrade to Dirac Live® 3.x Digital Room Correction, Multichannel (8ch) Full Range Room Correction (20~20kHz)
  • Audiophile performance with very low noise floor and distortion (SNR @127dB(A), THD+N @ -120dB (0.0001%)
  • Inputs: Stereo digital (SPDIF/Optical), Multichannel USB Audio streaming (up to 7.1)
  • Outputs: 8 channels audio duplicated to unbalanced (RCA) 
  • White/Black OLED front panel controller with IR control
  • Control and configuration by miniDSP Device Console (DC)
  • Rack mountable with removeable rack EARS

 

 

 

 

 

 

Product Downloads

What's in the box?

  • Digital Audio Processor - Flex HTx
  • IR remote v2
  • 12V univeral power supply (UK/EU/US/AU plugs)
  • USB cable  
  • Removeable Rack EARS (1RU)

Optional Items

NOTE: The UMIK-1/2 are measurement microphones approved by Dirac Research. Knowing the major effect a wrong calibration/measurement would have on the final results of Dirac Live tuning, we strongly recommend that you select a UMIK-1/2 microphone together with your platform for a plug&play experience leading to best results. Any issues related to 3rd party microphones such as ASIO/USB audio driver incompatibility/Latency problems or incorrect calibration process will not be under our support structure by our support team. 

Audio Precision APX555 Measurements

Digital to Analog (input 1 kHz, 0 dBFS) / AES17 20kHz LPF

SINAD & THD+N (%)

Dynamic Range

 

THD+N Ratio vs Frequency

 

miniDSP Device Console (DC)


Flex HTx leverages miniDSP Device Console (DC), our newest real time control interface with free Over The Air (OTA) upgrades for software and firmware upcoming enhancements. 

 

 

Application Notes

 

The Perfect Apple TV companion

The Apple TV 4k is the perfect streaming partner for the miniDSP Flex HT and Flex HTx. Combined with an eARC-enabled TV, a modern compact A/V system with Dirac Live®, the world's premiere room correction system, has never been easier to set up!


 

 



 

Multiway + Dirac Live

miniDSP's multichannel audio processors with Dirac Live room correction can implement advanced multiway active speakers. Any number of "ways" and speakers can be implemented up to the number of output channels. Check out our app note on how to get started!



Specifications

Description

Digital Signal Processing Engine

Analog Devices Floating point SHARC DSP: ADSP21489 @ 400MHZ

Processing resolution / Sample rate

32 bit/48 kHz

USB Audio support

UAC2 Audio - ASIO driver provided (Windows) - Plug&Play (Mac/Linux)
Multichannel USB Audio interface (8ch) for up to 7.1 configurations / 32bit / 44.1~96kHz

Input/Output DSP structure

8ch IN (USB/HDMI/Analog) or 2ch IN (Toslink/SPDIF) => DSP =>  8 channels OUT (Analog)

Digital Stereo Audio
Input Connectivity

1 x SPDIF (stereo) on RCA connector,
1 x OPTICAL (stereo) on Toslink connector
Supported sample rates: 20 – 216 kHz / Stereo source will be automatically assigned to Input 1&2

HDMI connectivity

ARC/EARC compliant for up to 8ch of LPCM audio streaming
Supported sample rates: 32 – 96 kHz / Supported sample sizes: 16-24bits
WARNING: No onboard Dolby/DTS decoding. Use your source (E.g. TV) to output in PCM mode.
 

Balanced 6.35mm TRS

Unbalanced RCA

Analog Audio Input Connectivity

8 x Balanced TRS

8 x Unbalanced RCA

Analog Audio Input Impedance

200 kΩ

100 kΩ

Analog Audio Output Impedance

300 Ω

150 Ω

Analog Input/Output Max Level

4 Vrms/4 Vrms

2 Vrms/2 Vrms

Frequency Response

20 Hz – 20 kHz ± 0.1 dB

20 Hz – 20 kHz ± 0.1 dB

Digital to Analog (input 1 kHz, 0 dBFS) / AES17 20kHz LPF

SNR

127 dB(A)

124 dB(A)

THD+N / SINAD

-120 dB (0.0001 %) / 120dB SINAD

-117 dB (0.00014 %) / 117dB SINAD

Crosstalk

-132 dB

-120dB

TRS Analog to Analog (input 1 kHz, 4 V RMS) / AES17 20kHz LPF

SNR

120 dB(A)

118 dB(A)

THD+N / SINAD

-114 dB (0.0002 %) / 114dB SINAD

-112 dB (0.00025 %) / 112dB SINAD

Crosstalk

-130 dB

-120 dB

Filtering Technology

miniDSP DSP toolbox (routing, bass management, parametric EQ, crossover, gain/delay). Optional software upgrade to multichannel Dirac Live® 3.x Full Range correction (20 Hz – 20 kHz)

DSP Presets

Up to 4 presets

Dimensions (HxWxD)

41.5 x 429 x 236 mm

Accessories

IR Remote

Power Supply

Included external switching Power Supply 12V/1.6A (US/UK/EU/AU plugs)

Trigger out

12V trigger out controls external ON/OFF powering of amplifiers, 3.5mm jack

CEC control

HDMI CEC command for Mute/Volume/Standby

Power Consumption

16.5 W (idle)
3.7 W (standby)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 14016928288

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4.5 ★★★★★
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Product Reviews
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Verified Purchase
Creative Gabby Girl
West Palm Beach, US
★★★★★ 5
The Epic Battle Against False Prophecy and Deception: The Revelationary War
Format: Paperback
In the beginning of the book, The Revelationary War, the author, Amanda Grace uses the bible verses Amos 3:7, Genesis 1:29 & Gen 2:16-17 to introduce the title of her book. She explains that prophecy is not just about revealing and revelation-it is an announcement of the thoughts, plans, purposes, and jugments of God. She goes on to say that at its basic, prophecy is an announcement from God. It can contain instructions, plans, encouragement, judgments, blessings, revelations, and anything else that God wants to announce to His people. She also explains that what is happening now is a direct result of what happened in the Garden of Eden. The author says, "It is time to sharpen our discernment and confront the counterfeits invading the church!" The author goes on to explain that there is an Epic Battle going on! The Revelationary War is a battle between what is false & what is real. The book has 12 chapters. The first chapter starts with "What is Prophecy?" and ends with chapter 12 entitled: The challenge and the Choice. The author uses bible verses all throughout the book. She uses it to back up and explain what we are seeing today and how it all follows a bibilical cycle. If you understand the biblical cycle we are in, you will then be able to understand where we are on God's timeline. The author also shares a few of her own personal experiences & how God used them to teach her and train her. What I discovered and learned: ●Knowing the difference between The Gift of Prophecy and The Office of a Prophet ●Understanding the difference between a SHOWMAN & a SHEPHERD ●How to identify the telltale signs of false prophets and recognize true prophecy when you hear it ●How to Avoid con artists, psychics, witchcraft, and divination disguised as prophetic or deliverance ministries ●Why discernment in the Body of Chist is lacking and what we can do to sharpen our discernment ●How Technology and Media work hand in hand and play a part in prophecy and what we should pay attention to As you dive into this book, be prepared to hear the truth! I purchased the paperback edition because I wanted a hard copy, not digital. From what I understand, this is Amanda Grace's first book! Being a follower of her X account and watching her LIVE broadcasts, I was very interested in reading it. I found this book to be full of Godly biblical wisdom, and knowledge into the world of the Prophectic. You will discover how biblical cycles play a very important part in prophecy and how to understand where we are on God's timeline. You will also learn how the enemy has infiltrated the churches and the difference between the showman and the sheperd! When I finished the book, I went back and read it a second time, taking notes and highlighting all the things that I felt were important. I have to say that the second go around, I even gleened more knowledge! Amanda has a passion for bringing people the truth of God's word and helping those who have fallen into the trap of being deceived! She has a true love for God's people, and she shares her knowledge & experience to help others who are eager to learn. Her in-depth knowledge of the prophectic is a tool that every christian should desire. I highly recommend this book to anyone who is interested in learning the truth of God's word and desiring to know how the prophetic works. * I did not receive any compensation for writing this review. I purchased this book because of my interest in the author and what she has to say about the prophectic. This review was based totally on my own views and what I learned & discovered from reading this book. I learned so much! I believe that anyone who is looking for the Truth in God's word and how prophecy plays an important part in every believer's life should read this. Thank you, Amanda, for writing this book! I believe it is a timely piece that God will use to help others understand the prophectic and the times we are living in. God Bless You!
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Reviewed in the United States on September 2, 2025
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Verified Purchase
Noel
Houston, US
★★★★★ 5
Interesting and enjoyable. Looking forward to the 2nd part this year.
Format: Paperback
I enjoyed the book. It's an interesting book on topics that will be very unfamiliar with many people. Because of my own point of view and experience, I would expect that many people would be scoffers. I would have been before my journey changed direction a few years ago. I watch the podcast by Amanda Grace / Ark of Grace on rumble . Com. I have been watching for two years. It was curiosity at first. After a few months of watching, I was blown away by the statements made, months in advance, happening sometimes exactly word for word, other times so close that when I hear an report on TV or radio or immediately reminds me of what I heard on Ark of Grace weeks or months before. It definitely has opened my mind to dig deeper into the word and turn to Him for insight into things I had previously never considered. In the periods of my active faith in my life, I don't remember people speaking about or believing in the power of modern prophetic word or direction by God, except one denomination that I took part in for a couple years. I have to heard more than wants that signs and wonders are no longer present in the modern world which is strange because we were previously, up to and even after the resurrection. It's strange logic to me that that would be impossible these days. It's just what I always heard aside from the one denomination and when I was going to that type of church, I was skeptical about that part because it was unusual for me. One thing I have learned is that nearly EVERY article of faith that ANY denomination or has, there are others that object to that principle. For example: Saints, prophecy, Trinity, purgatory, baptism significance/timing, gifts of the Holy Spirit, speaking in tongues, covenants in regards to Jew/Gentile, Sabbath day, day and celebration of birth and resurrection days, etc etc. If you consider, that almost every denomination and faith has important pillars of belief that are rejected by OTHER denominations of the same body of the church, there is a lot that we have varying beliefs on in the same religion. I believe the answer is to always turn to Him in faith, guidance and surrender. I try to remember that although the many churches of the faith have many differences, they are all part of the body of Christ and under his authority, not for us to decide which branches are to be removed. It is for us to be faithful to the best of our ability, and to share the light, not try to disown others who practice in their GOOD faith but understand some things differently than we do. (I'm talking about practices not blasphemy) [Luke9. 39Now John answered and said, “Master, we saw someone casting out demons in Your name, and we forbade him because he does not follow with us." 40But Jesus said to him, “Do not forbid him, for he who is not against us is on our side.”]
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2025
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Verified Purchase
G. Wright
Massapequa, US
★★★★★ 5
Turns out Amanda Grace is a Great Author as well as her other skills
Format: Paperback
Amanda Grace is always intelligent, anointed, insightful, and gets her point across. Her work with animals that have been abused, unwanted, and abandoned, shows her beautiful caring nature. She has brought all of those skills and more to her first book, and I am looking forward to her next book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
D
Verified Purchase
Debbie
Port Orchard, US
★★★★★ 5
Great read.
Format: Paperback
Product came in a timely manner. Very informative and Biblical.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
L
Verified Purchase
Lisa Calnan
Belleville, US
★★★★★ 5
Great End Times Info!!
Format: Paperback
One of the best quick reads about the times we are living in! Highly recommend!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026

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