miniDSP Flex HT Audio Processor


The Flex HT is miniDSP’s answer to customers looking for a pocket sized multichannel processor with HDMI ARC / eARC capabilities.

The miniDSP UMIK-1 and UMIK-2 calibrated omnidirectional USB microphones are ideal for taking measurements with Room EQ Wizard or Dirac Live. UMIK-1 measures frequencies up to 24 kHz. With its larger capsule and higher sample rate, UMIK-2 reliably measures frequencies up to 96 kHz.

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Brand: miniDSP Category:


The Flex HT is miniDSP’s answer to customers looking for a pocket sized multichannel processor with HDMI ARC / eARC capabilities. Their engineers were able to cram a full eight channels of DSP power and a wide range of input and output options into the unbelievably compact enclosure. The miniDSP Flex HT is the perfect solution for a modern compact processor for home theatre and multichannel sound.

Eight channel audio input is via linear PCM over HDMI eARC or USB Audio. Coaxial and optical S/PDIF provide additional stereo inputs. The eight channel analogue RCA outputs feature class-leading low noise and distortion figures.

Internally, miniDSP has provided a full suite of flexible routing and audio processing features, including bass management, parametric EQ, crossovers, advanced biquad programming and delay / gain adjustments. In addition, the miniDSP Flex HT is software-upgradable with full range Dirac Live®, the world’s premiere room correction system.

  • 32 bit floating point 400 MHz Analog Devices SHARC digital signal processor.
  • Multi-core XMOS USB audio processor.
  • HDMI ARC / eARC interface for multichannel PCM audio.
  • Optional upgrade to Dirac Live® 3.x eight channel full range digital room correction.
  • Audiophile performance with very low noise floor and distortion.
  • USB, coaxial and optical digital inputs.
  • RCA analogue outputs.
  • USB recording option.
  • OLED front panel display, rotary encoder and remote control.

Please note that the Flex HT does not support decoding of Dolby Digital, DTS or other proprietary audio formats. The audio source must be able to output linear PCM (LPCM).

Additional information




Audio Inputs

1 x coaxial digital RCA, 1 x HDMI eARC, 1 x optical Toslink, 1 x USB type B

Audio Outputs

8 x analogue RCA

Signal-to-Noise Ratio

128 dB


0.0003% @ -111 dB (THD+N)


400 MHz Analog Devices SHARC DSP


White OLED display

Dimensions (WxDxH)

150 x 180 x 41 mm

Documents and downloads

Flex HT product brief

Flex HT user manual

Frequently Asked Questions

miniDSP audio processors offer a lot of flexibility and not every possible use case requires taking measurements with a microphone. However, if you are going to use your miniDSP processor for room correction, subwoofer integration or as an active crossover for your speakers, then you are going to want to take some measurements using software like Room EQ Wizard (REW) or Dirac Live.

miniDSP’s UMIK-1 and UMIK-2 omnidirectional USB measurement microphones work perfectly with REW, Dirac Live and most other measurement software. Both models come with individual calibration files for horizontal and vertical placement, to provide highly accurate measurements in either orientation.

The lower cost UMIK-1 microphone has a sample rate of 48 kHz. This allows it to measure audio frequencies up to 24 kHz. It covers the entire audible band and provides more than enough bandwidth for subwoofer integration or room correction duties, where attention is mostly focussed on the low frequencies.

For those who want to understand the behaviour of their speakers or room beyond the audible band and into the ultrasonic, miniDSP offers the UMIK-2. UMIK-2 is equipped with a larger, more sensitive microphone capsule and a higher end analogue to digital converter, which provides a maximum sample rate of 192 kHz. This enables UMIK-2 to reliably measure frequencies up to 96 kHz (two full octaves more than UMIK-1).

Your miniDSP Flex HT Audio Processor will normally be delivered in 2-3 days.

Delivery is free on orders over £100. We deliver anywhere in the UK using premium tracked delivery services from DPD Local, UPS, TNT and Royal Mail.

When you by a product from us, you will have 30 days to decide whether or not you want to keep it. If you decide to return it for any reason, even if you just changed your mind, it will not cost you a penny. Just let us know that you want to return it and we will take care of the rest.

We will agree a collection date with you and send you a pre-paid shipping label for the return trip. You can have full refund or you can try something else instead. It is up to you. All we ask is that you take good care of the product, along with any accessories and packaging, while you are deciding whether or not to keep it.

We accept all major credit and debit cards, including Mastercard, Visa and American Express. We also accept Apple Pay and Google Pay. Payments are securely managed by industry leading payment processor Stripe and protected by SSL encryption. We will not store your card number or other payment information.


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