miniDSP Flex HT+ and HTx+: the compact Flex processors finally decode Atmos

Ever since they came out, the miniDSP Flex HT and Flex HTx have drawn the same complaint: superb multichannel processors that could not read a Dolby or DTS stream. The source, whether a TV or a streaming box, had to do all the decoding and send PCM. The new Flex HT+ and Flex HTx+ settle the matter. And miniDSP is launching a third unit alongside them, the Flex HPA, which puts a proper headphone amplifier in a Flex chassis.

The decoder that was missing

The "+" versions keep the Flex HT and HTx enclosures and add an onboard decoder. Connected to the TV over HDMI eARC, they accept Dolby Atmos, Dolby Digital Plus, DTS:X and DTS, on top of 8-channel PCM. The coaxial and optical inputs also read Dolby Digital and DTS 5.1 streams.

Everything else stays the same, which is good news: SHARC DSP, 8 output channels, bass management, parametric EQ, active crossovers, delays, and multichannel Dirac Live as a paid option. In other words, everything you need to integrate several subwoofers properly or run active speakers, now with decoding in the same box.

HT+ or HTx+?

The Flex HT+ is the compact one: a 15 cm wide box, 8 RCA outputs, and digital inputs only (HDMI eARC, 8-channel USB, coaxial, optical). It is the obvious pick for a living room where everything runs through the TV.

The Flex HTx+ moves to a 1U rack format and adds 8 analog inputs. Inputs and outputs are available on both RCA and balanced TRS, with even better published measurements (127 dB signal-to-noise ratio). It is aimed at systems built around balanced amplifiers or active speakers, and at anyone who wants to keep analog sources.

Where the Flex stops and the Tide16 begins

miniDSP says so itself: for Dirac ART or Dirac Live Bass Control, the Tide16 is the one to look at. The "+" Flex models are limited to standard Dirac Live and 8 channels. The Tide16 goes up to 16 balanced outputs and includes the full Dirac suite. It has also just gained support for 8 subwoofers, multichannel USB and REW's AutoEQ: we cover it all in this article.

Flex HPA: a Flex with a 5 W headphone amplifier

The Flex HPA builds on the stereo Flex (USB, coaxial, optical, LDAC and aptX Bluetooth, balanced analog inputs) and adds a headphone amplifier delivering up to 5 W, with a 4-pin XLR output and a 6.35 mm jack on the front. Around the back, four balanced outputs let you connect active speakers and one or two subwoofers.

The DSP is the whole point: parametric EQ, FIR and IIR filters, active crossovers, delays. You can EQ your headphones, run a 2.1 or 2.2 system, and add Dirac Live as an option to correct the room. One box on the desk for both headphones and speakers.

Pricing and availability

• miniDSP Flex HT+: €1,099 incl. VAT (€915.83 excl. VAT)
• miniDSP Flex HTx+: €1,699 incl. VAT (€1,415.83 excl. VAT)
• miniDSP Flex HPA: €1,239 incl. VAT (€1,032.50 excl. VAT)

All three are available to order. miniDSP expects first shipments towards the end of November 2026. The Dirac Live license and the measurement microphone (UMIK-1 or UMIK-2) are optional extras. Applicable VAT may vary depending on your status and the delivery country.