Universal Car Amplifier Bass Knob Controller
Universal Car Amplifier Bass Knob Controller – view 2
Universal Car Amplifier Bass Knob Controller – view 3
Universal Car Amplifier Bass Knob Controller – view 4
Universal Car Amplifier Bass Knob Controller – view 5
Car Electronics

Universal Car Amplifier Bass Knob Controller

Chosen because customers reordered it
$29.95 $44.95 Save 33%

Black Friday price Ends in 00d 00h 00m 00s

Order today, estimated delivery Nov 24 – Dec 6 · Free shipping over $39

In stock — ships in 1–3 business days
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Free shipping over $39. Tracked to your door, 7–15 business days across the US.
30-day returns. Unused and in original condition. Wrong or damaged on arrival is on us.
Encrypted checkout. Visa, Mastercard, Amex, Discover, PayPal, Apple Pay, Google Pay, Shop Pay.
Answers within 24 hours, seven days a week, from a person who can see your order.
Shipping & delivery

Orders are processed in 1–3 business days, then delivered in 7–15 business days across the United States and 10–20 business days to other countries. You receive a tracking link by email as soon as your parcel leaves.

Standard shipping is free on orders of $39 or more. Below that it is a flat $8.99 in the US and $11.95 to other countries. Multi-item orders may arrive in separate parcels a few days apart, at no extra cost.

Returns & refunds

You have 30 days from delivery to return an unused item in its original condition. Email us and we send instructions the same day.

If an item arrives damaged, faulty or not what you ordered, contact us within 7 days with a photo and choose a free replacement or a full refund — you pay nothing to return it.

Enhance Your Car Audio Experience

This universal bass knob controller allows you to easily adjust your subwoofer level independently from your main volume, ensuring optimal sound quality while driving. Perfect for car audio enthusiasts looking to fine-tune their music experience.

Why You'll Love It

  • Precision Control: The smooth rotary dial provides immediate gain adjustments to match your music genre.
  • Extra-Long Cable: The 12FT (3.5M) length allows for flexible routing from trunk-mounted amps to the front cabin.
  • High-Quality Construction: Made with pure copper core wire and heavy PVC insulation to prevent signal interference.
  • LED Indicator: The power light shows connection status for peace of mind.

Product Details

  • Dimensions: See the size options and photos above for exact measurements.
  • Material: Pure copper core + PVC protective sheath.
  • Maximum Voltage: 24 Volts (DC).
  • Number of Pins: 4.
  • Color: Black.

What's in the Box

  • 1 × Universal Car Amplifier Bass Control Knob Module
  • 1 × 12FT 4-Pin Crystal Connector Cable

Good to Know

Designed for outdoor usage, this product is lightweight and easy to install. Ensure proper routing of the cable to avoid any signal drop.

FAQ

Can I use this with any car amplifier?
Yes, this bass knob is designed to be compatible with most car amplifiers.

How do I install the bass knob?
The knob is designed for easy dashboard installation with included mounting hardware.

Specification
Category
Car Electronics
Condition
New
Processing
1–3 business days
Delivery
7–15 business days in the US
Returns
30 days from delivery
Our part of the deal

Packed by hand.Tracked to your door.Backed for thirty days.

Avelune · Est. 2026
What you can count on

The part that happens after you order

Tracked shipping

Free on orders of $39 or more, a flat $8.99 in the US below that. Tracking on every single order, no exceptions.

30-day returns

Thirty days from delivery to change your mind on unused items. Wrong or damaged on arrival is on us, always.

Safe checkout

Visa, Mastercard, Amex, Discover, PayPal, Apple Pay, Google Pay and Shop Pay over an encrypted, PCI-compliant checkout.

People, not scripts

Email us any day of the week and a real person replies within 24 hours, usually much sooner.

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From order to doorstep

What happens after you press buy

No mystery, no silent weeks. Here is the whole journey, with the timing we hold ourselves to.

01

We pick and check

Your order is routed to the partner warehouse holding that piece, pulled, inspected and packed for transit.

1–3 business days
02

It ships with tracking

You get an email with a tracking link the moment it leaves. Multi-item orders may travel in separate parcels, at no extra cost.

Tracking on every order
03

It reaches your door

Most US addresses receive within 7 to 15 business days of dispatch. If it runs long, write to us and we reship or refund.

7–15 business days
Before you order

Questions about this order

The three things customers ask most before buying. Anything else, email us and a person replies within a day.

When will this arrive?

We process in 1–3 business days, then delivery takes 7–15 business days across the United States and 10–20 business days elsewhere. You get a tracking link by email as soon as it ships.

What if it is not right?

You have 30 days from delivery to return an unused item in original condition. If it arrives damaged or wrong, send a photo within 7 days and pick a free replacement or a full refund — you pay nothing to return it.

Is shipping really free?

On orders of $39 or more, yes, to every destination we serve. Below $39 it is a flat $8.99 in the US and $11.95 to other countries.

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