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Big Jeff Audio

Big Jeff Audio is a family-owned business that has been thriving since 2014, initially starting out on eBay and Amazon. With a strong commitment to customer satisfaction, we have now expanded to offer a vast array of products on our site, all backed by our authorization as an online seller.

Check out our selection of custom bass knobs, machined aluminum parts, fuse blocks, "cockboxes", and more!

We also have some high-quality Big Jeff Audio merch that will show that you know where to go for BIG SOUND!

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Big Jeff Audio Bass Knobs

Save up to 20% Save %

Official Big Jeff Audio Aluminum Cased 30" RCA Bass Knob Black/Silver

Big Jeff Audio
$62.34 - $112.44
$62.34 - $112.44
$62.34
$49.95 - $89.95
$49.95 - $89.95
$49.95
In stock

Elevate your car audio experience with the Big Jeff Audio Official Aluminum Cased 30" RCA Bass Knob. This sleek and precision-crafted knobs empower...

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$62.34 - $112.44
$62.34 - $112.44
$62.34
$49.95 - $89.95
$49.95 - $89.95
$49.95
Save up to 20% Save %
Save 33% Save %

Official Big Jeff Audio LED Bluetooth Control 30" RCA Bass Knob & Volt Meter

Big Jeff Audio
$149.95
$149.95 - $149.95
$149.95
$99.95
$99.95 - $99.95
$99.95
In stock

Official Big Jeff Audio LED Bluetooth Control  30" RCA Bass Knob & Volt Meter This listing Includes: (1) 30" Bluetooth Controlled LED RCA Ba...

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$149.95
$149.95 - $149.95
$149.95
$99.95
$99.95 - $99.95
$99.95
Save 33% Save %
Sold out

Official Big Jeff Audio Aluminum Cased 30" RCA Bass Knob Red

Big Jeff Audio
$62.34
$62.34 - $62.34
$62.34
$49.95
$49.95 - $49.95
$49.95
Out of stock

Universal Compatibility: Big Jeff Audio Official Aluminum Cased 30" RCA Bass Knob is compatible with a wide range of amplifiers, ensuring versatil...

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$62.34
$62.34 - $62.34
$62.34
$49.95
$49.95 - $49.95
$49.95
Sold out
Sold out

Official Big Jeff Audio Aluminum Cased 30" RCA Bass Knob Silver - OPEN BOX

Big Jeff Audio
$62.34
$62.34 - $62.34
$62.34
$40.46
$40.46 - $40.46
$40.46
Out of stock

Universal Compatibility: Big Jeff Audio Official Aluminum Cased 30" RCA Bass Knob is compatible with a wide range of amplifiers, ensuring versatil...

View full details
$62.34
$62.34 - $62.34
$62.34
$40.46
$40.46 - $40.46
$40.46
Sold out

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