Mackie Big Know Passive speaker controller with box.

Unit was fully tested and works as it should with no issues.

The Mackie Big Knob Passive is a highly popular, 2x2 studio monitor controller that manages volume, source selection, and speaker switching without requiring external power. Because it uses a fully passive signal path, it ensures zero coloration of your audio while delivering an intuitive workflow. 

• Source & Monitor Switching: Allows you to connect up to 2 different input sources (e.g., audio interfaces, mixers) and switch between 2 different pairs of studio monitors.
• Inputs: 2 x 1/4" TRS (Source A), 1 x 1/4" TRS (Source B), and 1 x 1/8" (3.5mm) TRS jack on the top panel for easy smartphone or tablet connection.
• Outputs: 2 x 1/4" TRS pairs for your monitors (Monitor A and Monitor B).
• Master Control: The iconic, oversized rotary volume knob utilizes a high-quality stepped attenuator for perfectly matched left/right stereo volume. 

Essential Control Buttons

• Mono: Sums your stereo signal to mono, which is great for checking phase issues and mix compatibility.
• Mute: Instantly cuts the output signal.
• Dim: Drops the volume by  instantly so you can talk to someone in the room without losing your master volume position. 

Pros & Considerations

• Zero Power Required: Because it contains no active electronics, it operates without an AC adapter.
• Build Quality: Features a heavy, "built-like-a-tank" all-metal chassis that sits solidly on your desk.
• Noise Consideration: While passive controllers are praised for transparency, some users report experiencing crackling or static from the volume potentiometer over years of heavy use.

Payment required within 24 hours. Buyer also pays shipping and insurance.

I ship worldwide, please understand the shipping cost in an estimate and there may be additional cost for international shipping.

Please ask all questions if you have any concerns prior to bidding.

Please understand that if it is not in the description, then it is not included.

Check out my other listings. New stuff added on a weekly basis.

The Guitar Shop Phone Number 419-332-8788

Shop hours, Wednesday, Thursday, Friday 12 to 6pm Saturday, 10 to 2pm

Closed Sunday, Monday, Tuesday.

International Shipping is a flat rate estimate. Subject to change

We buy guitar, amp and pedal collections. Give us a call 419-332-8788

Since my shop is closed on Sunday, Monday and Tuesday, if you purchase the item late on a Saturday and want it fast, let me know am I will try to get it sent out on a Monday, if you don't mind, then I will get it shipped out when I get back in my shop on Wednesday. Thanks