Professional Active Reference 5" Studio Monitor

The uniK 05+ is the result of extensive development work performed in Germany, defining a new quality level in its class. With its new 5" kevlar low frequency driver and a new custom engineered and powerful high frequency magnetostatic tweeter, the uniK 05+ offers many improvements over our successful uniK 05 and will easily become an important part of your studio setup with its clear and strong sound image.

What makes uniK 05+ unique?

The uniK 05+ studio monitor offers true full range quality with extended low end in a small case and an entirely new signal processing and amplifier unit with a perfect order low-z and low noise design. Mos-Fet Bi-amplification ensures a high slew-rate and fast setting, featuring true analog vintage sound processing with LC-like gyrator technology for a stressless and silky sound.

A completely new feature is the unique one knob sound character adjustment from smooth to bright, allowing you to change parameters for every room and preference. The additional high resolution High and Low switches add additional control. And of course the uniK 05+ studio monitor features a real precision gain attenuator, instead of a simple volume control.

The new design of the crossover ensures an excellent phase response and safe power limitation, driving the woofer and tweeter in phase for optimal step response. The tweeter features a newly upgraded magnetostatic design with extremely low moving mass for extended frequency and fast transient response and high sound resolution. The matching woofer consists of a kevlar composite cone with high stiffness ensuring better piston motion and excellent low-end sound reproduction.

Another new feature is the flexible rubber feet with discrete height adjustment. They are not only helpful to reduce unwanted vibrations, but also allow you to tilt the speaker towards the precise listening point - a great feature for typical near field applications.

Other new special features that are not standard in this class are standby to save power consumption (can be disabled) and a ground lift switch.

And with it's copper color woofer cone and the high quality matte cabinet finish, it looks quite uniK, too!



  • Biamp 2-Way Powered Speaker System
  • Active Studio Monitor Speaker
  • HF Driver: extremely low mass magnetostactic tweeter Φ49 x 26 mm
  • LF Driver: 5" kevlar curved cone (magnetic shielding type)
  • Output Power: 80W (HF: 40W, LF: 40W), 110W AC consumption power
  • Frequency Response: 49Hz - 25kHz
  • Input Impedance: 27.2kOhm (balanced) / 13.6kOhm (unbalanced)
  • Crossover Point: 3.2kHz
  • SPL: 101dB, Peak 104dB
  • Input Connectors: XLR / TRS 1/4" combo connector, balanced / unbalanced
  • Gain Control: -14 .. 0dB .. +14
  • Room Adjustments Control: Character: -6 .. 0dB .. +6; Low: -5 .. 0dB .. +5; High: -5 .. 0dB .. +5
  • Rear Bass-Reflex ventilation, optimized for near field application
  • Ground lift switch
  • Standby function, can be turned on and off
  • Indicator: multi color LED on front panel, power on orange, standby red
  • Feet: 4 pieces rubberized, adjustable height separately
  • Working Voltage: AC100-240V 50/60Hz
  • Dimensions (W x H x D): 190 x 265 x 210mm
  • Weight: 4.4 kg

Product Videos

Watch these product videos for uniK 05+:

Check out these close up details and features of our uniK 05+ studio reference monitor - it's time to be uniK.

In this Mr. ESI episode, you hear about our uniK 05+ and uniK 08+ reference monitors and how they can help you to improve the sound of your mixes.

Reviews and Testimonials

Here are selected reviews of uniK 05+:


The May 2016 issue of Sound on Sound features a review of uniK 05+ by Paul White. Here is a quote: "have a very grown-up sound and shouldn't be ignored" - check the full text of the review here.



Beat (Germany) gave our uniK 05+ their recommendation award. Henning Schonvogel praised them for their practical features, liked the sound character options, the detailed highs, the solid base and the excellent stereo image.



10/2017 Mike Metlay wrote a very detailed RECORDING review of uniK 05+ and uniK 08+: "ESI's uniK Plus speakers stand proudly (...) They have their own character, and it's one that I happen to trust-the clarity and sweetness of a flat-ribbon tweeter married to the controlled and 3-dimensional power of a properly powered woofer." - you can check the full text here as PDF.



The March 2016 issue of KEYS (Germany) features a uniK 05+ review by Martin Person: "well tuned frequency response with tight base response and clear transients" / "many practical features"



Axel Ritt of popular german magazine Amazona reviewed uniK 05+ and mentioned in his conclusion:"Extensive sound control in combination with several good detailed solutions make the discerning looking box a reall winner in the project studio." - read the full german language review here!



The Polish language blog Analogowa Dusza checked out a pair of our uniK 05+. One of the key comments translates to "... it defines a new level of quality in its class". Check the full review in Polish language here.



Moritz Hillmayer wrote in RecMag 2/2016 (Germany) a review of our uniK 05+: "Soundwise, uniK 05+ convince especially with their powerful bass and ear-friendly essence." / "At reasonable cost, ESI delivers good monitors ..."


You can find more reviews of uniK 05+ here. If you are interested in adding a review to this list, do not hesitate and contact us.