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Mackie Big Knob Studio


Active Monitor Controller

  • For up to two monitor pairs and three stereo sources
  • 2x2 USB audio interface (24 bit/192 kHz)
  • Large volume control
  • Switch 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 supply
  • Steel casing
  • For Mac and PC
  • Includes Tracktion recording software


  • 2 Microphone/Line XLR/jack 6.3 mm combo inputs
  • 2 Line Inputs 6.3 mm jack balanced
  • 2 Track connectors 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
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) 192 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
Item number 407250
The shipping costs are calculated on the checkout page.
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
75 Sales Rank

87 Customer Reviews

5 51 Customers
4 20 Customers
3 6 Customers
2 5 Customers
1 5 Customers
4.2 / 5





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.


99% satisfied!
JONESYdj 11.02.2019
I use it to control my active monitors in the studio. I have connected the main monitors to output A and subwoofers to output B. It's great because I can fine tune the amount of bass without having to reach for the subwoofer.
All the inputs and audio interface work like a charm, I use it as a mixer between 3 sources (DJ mixer and two iMacs), I sometimes connect my laptop or iPhone to the front 3/4 stereo in and everything works exactly as it should. Headphones monitoring also work great.
My only complaints are that it heats up a little too much for my comfort even when inactive (but no issues whatsoever) and when powering off in the back, the subwoofer makes a boom sound (even if the output for it is switched off).
I'm VERY happy to have this, it solved sooo many problems in just one device.


Useful for our band
Sven@Herald 17.10.2019
The Big Knob Studio is totally useful for our band's studio where we record our demos and records. I use it every week. It's very convenient to use for recording alone, too. For example the dim and mute functions come handy when recording my own vocals. The level of monitors can be very easily controlled with the big button. This is a good product and can be recommended to everyone who runs a small/home studio.


Мой первый аудио итер
Artem Lee 22.11.2019
This is my first audio interface, bought for a home Studio. I chose it because of the combination with the active monitor controller. The case is made of metal, the legs do not slide on the surface of the table when you connect the headphones. Everything is very high quality and looks solid. Before buying I read that it is heated, so, it is heated but not much, it does not cause discomfort. Very good microphone amplifiers, 300om headphones play loud and there is a margin for volume. The controls are simple and intuitive. The large volume knob works smoothly. Excellent audio interface, paired with RODE NT1 a sound is very high quality. Cons not found, so I recommend to anyone who wants to create in your home Studio and has several pairs of Studio monitors, or has one pair but plans to buy more.


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