SKU: 13545929370

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: 13545929370

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Monica
Port Orchard, US
★★★★★ 5
Great dry mouth mouth wash
Size: 1.5 Fl Oz (Pack of 2)
This was for a friend and she says it really helps her so I would definitely give it a try !!
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Reviewed in the United States on June 2, 2026
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sally ornelas
Charlottesville, US
★★★★★ 5
Dry mouth
Size: 1.5 Fl Oz (Pack of 2)
It works
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Reviewed in the United States on May 29, 2026
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GARY55
Battle Creek, US
★★★★★ 5
Must Read Book To Improve Health and Aging
Format: Hardcover, Format: Hardcover
Jessie Inchauspe is brilliant. This book is full of very useful and effective information building on her 10 Hacks found on her YouTube videos. As a biochemist and medical researcher, she is considerably more knowledgeable than many physicians I've met about nutrition and its impact on health. I have been struggling with borderline diabetes/pre-diabetes for years. Doctors wanted to put me on Metformin which I refused as I’m improving and reversing this condition through diet, exercise, and natural supplements. This is a very interesting easy to read book that fully explains how important it is to balance and flatten glucose spikes and improve insulin sensitivity. Many people know ”What” to eat and what foods to avoid, intermittent fasting addresses “When” to eat. This book discusses “How" to eat in a particular order to noticeably benefit health. She explains glucose spikes and insulin resistance and its relationship impacting health, chronic illnesses and aging. She states that chronic diseases including heart, cancer, obesity, diabetes, dementia, PCOS, and others are from inflammation stemming from uncontrolled glucose spikes. Feeding children in this particular order can also improve their health- childhood diabetes is a major concern. Inchauspe cites a 2015 Cornell Study which found that people who ate food in this order (described below) reduced glucose spikes by 73% and insulin spikes by 48% within 2 hours, along with a significant reduction in their A1C levels. This is huge! My own blood testing and eating a variety of foods in this order, including various desserts, shows an impressive further reduction in my 2 hour postprandial blood glucose readings which are typically in the 90's or very low hundreds. The 10 Hacks found in her YouTube videos are greatly expanded upon in this book to make these hacks even more effective in normalizing glucose and improving blood testing and A1C scores, while helping to lose weight by eating foods in a certain order: First- salads and/or veggies. Second- protein and good fats. Third and last- carbohydrates & starches. Yes, you can eat whatever you want, and however much you want (no counting calories) and even have dessert as part of the meal while minimizing glucose spikes and fat storage, improving insulin sensitivity and overall health. If you need to lose weight or have blood glucose challenges, skip dessert and reduce or eliminate bad carbs and limit good carbs. Eating in this order becomes a lifestyle and easy to implement daily. I find eating this way that I’m already pretty full by the time I get to the carb and dessert stage which helps maintain my weight. Other hacks include drinking a tablespoon of apple cider vinegar in water or in a dressing, not eating naked carbs (take carbs with a good fat or protein), and walking after a meal or doing slow calf raising exercises while seated at the table. I have been doing intermittent fasting for over 6 years and it has been a major driver in my own improvement in reducing A1C scores. I get my blood tested every 4 months. I vary fasting between OMAD ( 1 meal a day), 20:4, 22:2, 19:5, 18:6, and 16:8 depending on schedule eating no more than 2 meals a day and no snacking. Fasting reduces inflammation which is a main driver of diabetes. I’m doing a modified keto diet mainly with healthy whole food items. Combining fasting wth eating food in the proper order is effective in reducing glucose and easy to implement. Doing calf raises while seated which target the Soleus muscle in the calves is very powerful. The Soleus muscle is the only muscle in the body which absorbs glucose from the bloodstream. I try to do calf raises while sitting at the dining table at the end of a meal for at least 10 minutes. This can reduce glucose spikes by 52 percent and insulin by 60 percent. Google the ‘Soleus muscle glucose metabolism’ for more info. I also do a few simple Tai Chi exercises I found on YouTube. I have also been taking Dihydro Berberine which is more effective than regular Berberine. I use Heal Meal brand. My functional health MD upped dosage to 5 a day- 3 at first meal, 2 at my second and last meal- which has reduced my glucose spikes in a major way versus 4 daily. Take 20 minutes before eating. Highly recommended! Update September 2024- I recently got a Dexcom G7 continuous glucose monitor (CGM) which has been very educational in seeing how good quality sleep and walking after meals helps to further lower glucose levels, versus poor sleep and no walking after eating. Drinking a 1-2 tablespoons of apple cider vinegar in a glass of water before a meal, especially a high carb meal, is very powerful in reducing glucose spikes. I used to get up at 3am to go on the computer every morning. Forcing myself to break this habit and stay in bed has seen a further lowering of blood glucose after several days. A good night’s sleep and exercise after eating are as essential as diet. This is clearly shown on the CGM which reports glucose changes every 5 minutes. Seeing how various foods impact glucose is a valuable learning tool. I had to pay for this out of pocket and it has been a worthwhile investment. When installing a new monitor every 10 days I find it necessary to recalibrate the Dexcom readings with a fingertip blood test, as the initial readings were too high, typically anywhere from 10-35 points higher than the blood test. Simply click on the plus sign and follow directions to recalibrate.
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Reviewed in the United States on June 11, 2024
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Amy Biggs
Carnegie, US
★★★★★ 5
Revolutionary Health Guide That Actually Transforms Daily Wellness Through Practical Science!
Format: Hardcover
Glucose Revolution has been absolutely transformative for my health understanding and provides exactly the actionable, science-based approach needed to optimize energy, weight, and overall wellness through blood sugar management that actually works in real life! As someone who struggled with energy crashes, weight fluctuations, and general wellness concerns while wanting evidence-based solutions rather than fad diet approaches, this book delivers the comprehensive education and practical strategies that make sustainable health improvement achievable through understanding glucose impact on daily functioning. The scientific foundation is outstanding with clear explanations of how blood sugar affects energy, mood, weight, and long-term health while making complex metabolic concepts accessible to readers without medical backgrounds. The research-based approach provides confidence that recommendations are grounded in genuine science rather than marketing trends or unsubstantiated claims. What impressed me most is the practical application focus that translates scientific knowledge into daily habits and food choices that actually work within busy lifestyles and real-world eating situations. The actionable strategies eliminate the gap between health knowledge and implementation that makes many health books intellectually interesting but practically useless. The meal timing and food combination guidance provides specific, implementable advice about optimizing glucose response through strategic eating patterns that don't require extreme dietary restrictions or complicated meal planning. The flexible approach accommodates various dietary preferences while delivering consistent metabolic benefits. The energy stabilization benefits have been genuinely life-changing with elimination of afternoon crashes and dramatic improvement in sustained energy throughout the day that supports productivity and overall quality of life. The consistent energy demonstrates real metabolic improvement rather than temporary dietary effects. The weight management insights explain the connection between glucose spikes and weight gain while providing sustainable approaches to weight control that don't rely on calorie restriction or unsustainable eating patterns. The metabolic approach to weight management proves more effective than traditional dieting methods. The food selection strategies help identify which foods support stable blood sugar while showing how to modify meals and snacks to minimize glucose spikes without eliminating entire food groups or following restrictive eating plans that become impractical for long-term adherence. The lifestyle integration makes glucose optimization practical within normal social eating, dining out, and family meal situations where extreme dietary approaches become socially isolating or practically impossible to maintain consistently over time. The educational value extends beyond glucose management to comprehensive understanding of nutrition science and metabolic health that supports informed food choices and health decisions across various wellness goals and life circumstances that require adaptable health knowledge. The motivation enhancement comes from visible, measurable results that demonstrate the effectiveness of glucose management approaches while providing sustainable motivation for continued healthy choices that don't rely on willpower or temporary enthusiasm that fades over time. The long-term health impact addresses chronic disease prevention through metabolic optimization while providing proactive health strategies that support aging well and maintaining vitality throughout life rather than reactive approaches that address problems after they develop. The accessibility makes advanced nutritional science understandable and applicable for readers regardless of previous health education while providing depth sufficient for those wanting comprehensive understanding of glucose metabolism and its health implications. The value for transformative health improvement is exceptional for a book that provides education and strategies equivalent to expensive nutritional counseling while delivering lasting knowledge that supports lifelong wellness enhancement through practical, sustainable approaches. For individuals seeking evidence-based health improvement that addresses energy, weight, and overall wellness through practical strategies that work within real-life circumstances while providing genuine understanding of metabolic health, this book delivers exactly the scientific foundation and actionable guidance needed for sustainable health transformation without extreme measures or temporary solutions.
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Reviewed in the United States on November 29, 2025
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Marcus@TauCeti
Dallas, US
★★★★★ 5
Let me very clear. This book saved my Life!
Format: Hardcover
After a surprise diagnosis of Diabetes right before my retirement, this is the first book a bought after seeing segments on YouTube with the science of eating. I lost 60 pounds, got my glucose under control in less than 3 months and threw away all my diabetes medication! After three months, My doctor came in shaking my hand with congratulations! I was blown away. The book is full of practical advice for what to eat, when to eat, and what order to eat parts of your meal to control your blood glucose and not succumb to Diabetes. Life is all about choices! This book has easy instructions, thorough explanations, a little tongue in cheek humor along the way. If you want to kick your downward health spiral and kick diabetes to the curb making good health choices, then this is the Book for you.
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Reviewed in the United States on March 4, 2026

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