Can you plug in a sub-woofer?

Only if your sub feeds your monitors. If you don't know the answer to that question, you should probably start there. This device just provides 2 source inputs, and 2 stereo outputs.

I want to use this to control if sound comes through my headphones or studio monitors. Is the phones out affected by the mute or monitor toggles?

It has 2 headphone outputs, each with their own control, and a knob to choose between cue an input. It is not affected by monitor toggles or mute; those just turn the respective monitor speaker on and off. I run my mains on A and my subs on B for independent control. Each monitor also has its own trim level to manage balance. This thing behaves like any line mixer should.

What cables do i need? i do not know how to set up. i have 2 krk studio monitors and scarlet solo interface. please help

You need 2x RCA to 1/4" cables to connect your Scarlett to the Big Knob, and 2x 1/4" to 1/4" to connect the Big Knob to your monitors. Since the Scarlett is unbalanced out, there's no reason to use TRS (balanced) cables for your monitor run.

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Mackie Big Knob Passive Monitor Controller (2x2), Source + Level Switch

Product ID: 39035518

Details

Audio Output Mode
Stereo
Brand
Mackie
Connectivity Technology
USB
Frequency Response
20 KHz
Speaker Maximum Output Power
1000 watts

🔇Mono/Mute/Dim buttons for precise monitoring

🎚️2x2 stereo input/output control

🛠️Rugged metal build, studio-grade durability

€ 174.35

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Description

🎛️ Control your sound like a pro—no power needed, all precision gained.

BUILT LIKE A TANK - Heavy-duty metal chassis designed to withstand the rigors of professional studio use and last for years.
COMPACT STUDIO ESSENTIAL - Perfectly sized for desktop setups, making it the go-to passive controller for home studios and editing suites alike.
PURE PASSIVE SIGNAL PATH - Maintains pristine audio integrity with zero coloration—hear your mix exactly as it is.
PRO LEVEL MONITORING CONTROLS - Mono, mute, and dim buttons let you fine-tune your listening environment with surgical precision.
SEAMLESS SOURCE MONITOR SWITCHING - Effortlessly toggle between two stereo sources and two monitor pairs for ultimate studio flexibility.

The Mackie Big Knob Passive is a robust 2x2 stereo studio monitor controller featuring a passive audio path for uncolored sound, with dedicated mono, mute, and dim buttons. It allows seamless switching between two sources and two monitor pairs, housed in a durable metal chassis ideal for professional and home studios seeking reliable, high-fidelity monitoring control without active electronics.

Specifications

ASIN	B01NCUZ32O
Additional Features	Volume Control
Age Range Description	Adult
Antenna Location	For Studio Use
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#3,631 in Musical Instruments ( See Top 100 in Musical Instruments ) #3 in Digital Audio Workstation Controllers #10 in DJ Controllers
Brand	Mackie
Built-In Media	Big Knob Passive, Quick Start Guide
Color	Not Available
Compatible Devices	Desktop, Laptop
Connectivity Protocol	USB
Connectivity Technology	USB
Control Method	Touch
Controller Type	Volume control
Customer Package Type	Standard Packaging
Customer Reviews	4.5 4.5 out of 5 stars (1,295)
Enclosure Material	Metal
Frequency Response	20 KHz
Global Trade Identification Number	00663961050462
Input Voltage	120 volts
Is Waterproof	False
Item Dimensions D x W x H	7.8"D x 8.3"W x 4.9"H
Item Type Name	Mackie Big Knob Passive 2x2 Studio Monitor Controller
Item Weight	1 kg
Manufacturer	Loud Technologies, Inc.
Model Name	Big Knob Passive
Model Number	Big Knob Passive
Mounting Type	Tabletop Mount
Number Of Circuits	1
Number of Audio Channels	2
Number of Batteries	Unknown batteries required.
Number of Items	1
Number of Power Levels	1
Power Source	Corded Electric
Speaker Maximum Output Power	1000 watts
Speaker Size	1 inches
Speaker Type	Monitor
Specific Uses For Product	Studio and editing suite applications
Subwoofer Connectivity Technology	Wired
Tweeter Diameter	1 inches
UPC	663961058840 663961050462
Unit Count	1 Count
Warranty Description	1-year all inclusive, nontransferable
Warranty Type	Limited Warranty
Water Resistance Level	Not Water Resistant
Wireless Technology	No Wireless Communication Technology
Woofer Diameter	1 inches

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 174.35

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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