Mackie Big Knob Studio


Active Monitor Controller

  • For up to 2 monitor pairs and 3 stereo sources
  • 2x2 USB audio interface 24 bit / 96 kHz
  • Large volume control
  • Switches for mute, dim, mono, monitor and signal source
  • Independent trim for all sources and monitor outputs
  • Cue mix function
  • Integrated talkback microphone
  • 16-segment LED metering
  • +48 V phantom power
  • Steel housing
  • iOS support with optional Lightning to USB 3.0 camera adapter for connection to iPad and iPhone (adapter not included)
  • For Mac and PC
  • Includes Tracktion waveform recording software


  • 2 Microphone/line XLR/jack 6.3 mm combo inputs
  • 2 Line inputs 6.3 mm jack balanced
  • 2 Track connections 6.3 mm jack (L/R)
  • 2 Stereo monitor outputs 6.3 mm jack
  • 2 Stereo headphone outputs 6.3 mm jack
  • 1 Stereo line input 3.5 mm mini jack
  • USB
  • Power supply connection
available since September 2017
Item number 407250
sales unit 1 piece(s)
Recording / Playback Channels 2x2
Number of Mic Inputs 2
Number of Line Inputs 2
Number of Instrument Inputs 0
Number of Line Outs 2
Headphone Outs 2
Phantom power Yes
Number of S/PDIF Connectors 0
Number of ADAT Connectors 0
Numer of AES/EBU Connectors 0
Number of MADI Connectors 0
Ethernet 0
Other Connectors No
MIDI interface No
Word Clock No
Max. sample rate (kHz) 96 kHz
Max. resolution in bit 24 bit
USB Bus-Powered No
Incl. power supply Yes
USB Version 2.0
Width in mm 251 mm
Depth in mm 163 mm
Height in mm 81 mm
Number Of Monitoring Outputs (Stereo) 2
Headphone connection 2
Talkback Function 1
Built-in AD / DA converter 1
Level Meter 1
Number of 2 track inputs 1
Design Desktop
Dimensions 251 x 163 x 81 mm
Weight 1,6 kg
Included in delivery USB Cable, Power Supply, Tracktion Software and Manual
Zero latency monitoring 1
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B-Stock from £139 available
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97 Customer ratings

68 Reviews

Much spice but just barely enough meat
Peter V_ 18.07.2019
Solid packaging, all the cabling and accessories you might need to start off with. As an extra it included a key for Tracktion 4 but I'm not sure if that's still relevant.

The build quality is a bit inconsistent, some buttons are a bit clunky and not giving the same physical response as the rest -but the volume knob is super hifi-like though and it just feels satisfying to touch it. The frame is well designed and built, rubber feet is placed where it's needed. It's heating up quite much on the front side but unless you're putting something close up front to it it's barely noticeable. Just let it breathe.

I really like the overall look of the box, the LEDs are nice and we got good pack of features including built-in mic and push to talk button (which I've never seen before on interfaces in this price range). Can totally see myself using this in a small, half-professional recording setting. One thing I instantly wanted to try is how well it can drive my headphones on playback, but I was very soon surprised/disappointed that unless I'm wiring things up weird I am unable to do it. Oh well.

Sound-wise I have not gotten around to test the mic inputs yet, I'm struggling with driver problems for the time being (Win 10). The drivers are not automagically installed, despite what happens with most equipment these days. I downloaded the official driver and it still struggles to clear up the unknown hardware indicators in device manager. Despite this, in Windows with playback I have no issues, in DAWs however I am forced to use buffer sizes of 1024 samples or more or it starts to clip hard. I'm reading online that it's normal to use that setting for mixing but on my Focusrite I had none such limitation. I'll try to fix these regardless in the future, I am yet to go through the manuals as I'd rather experiment on my own (ease of use & setup and such nonsense).

Edit: Sorted out driver issues. Latency is fine now. However after much testing, I found the mic pre-s to be quite bad compared to my Focusrite Scarlett. Clipped the signal before the meter did and made my AT2020 sound like some cheap knockoff. Also there is some strange routing thing happening with direct monitoring - if the inputs are active it sends the signal out with no respect to where the knob is turned...

It's a nice looking monitor controller really.


ALI ALHADDAD 03.12.2021
Very good for studio use, but it gets hot after 2 hours


had it for a few days
Xealz 30.05.2021
So, i've had it for a few days, i use it everyday with my monitors, dont have much to say about them yet, the A channel which i use to my monitors works well... i havent used many of the other features yet, im gonna update it when i have tried with headphones and a microphone...
it does tend to get a bit warm with a long time usage, its still not hot enough for it to burn your fingers but it does get hotter than 40C, overall im quite satisfied with it, it works well for what i need it for as of right now.

Edit: so i've noticed a bit of a problem, at low volume as in turning to big knob down to low volume can cause an unbalance in the audio so the right becomes louder than the left, so i recommend just using the windows audio to turn up and down the volume and leave the big knob as it is.

another edit: this isn't a problem for some, but a feature i'd love to see on the product would be a way to disable the built in mic, as talking in a voice chat the other parties can hear themselves.


Volume knob failed twice
Clarkez 20.08.2019
I've had two Mackie Big Knobs; the above model and its previous version. Both developed issues within a year! I wrote to Mackie a few times and the products went beyond their warrantee before they got back to me. I'm still challenging them for a refund!


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