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B2 Audio Ref Four Bass Knob Controller with Level Voltage Temp & Clip Indicators

CASE QUANTITY: 1

PACKAGE WEIGHT: 0.65 LB

SKU B2-REF4-BK
Original price $49.95 - Original price $49.95
Original price $49.95
$49.95
$49.95 - $49.95
Current price $49.95

Free Gifts when added to Cart

The more you spend, the greater selection of free gifts you'll have at your fingertips when selecting items in your shopping cart!

  • Designed for the Ref Four Amplifier: Official B2 Audio bass knob built specifically for seamless integration with the Ref Four.
  • Full System Control: Adjust bass levels on the fly with the smooth precision control knob.
  • Advanced Monitoring: Power/Voltage selector plus LED Voltage/Temperature readout with Celsius/Fahrenheit option.
  • Safety Indicators: Integrated Power and Clip lights keep your system protected and easy to monitor.
  • Premium Build: Durable metal casing with the B2 logo in white, paired with included CAT5 cable for reliable connection.


B2 Audio Ref Four Bass Knob Controller with Level Voltage Temp & Clip Indicators


This Listing Includes:



  • (1) B2 Audio Ref Four Bassknob Controller

  • (1) CAT5 Cable

  • (2) Installation Screws


Take command of your bass with the official B2 Audio Ref Four Bassknob, built to match the performance and precision of the legendary Ref Four amplifier. Crafted with a durable metal casing and finished with the bold B2 logo in white, this bass controller gives you full system control with style and reliability.


Features:



  • Level control knob for precise bass adjustment

  • Power/Voltage selector switch

  • Power and Clip indicator lights

  • LED Voltage/Temperature selector

  • Celsius/Fahrenheit toggle switch

  • Heavy-duty metal casing with B2 branding


Perfect For:


Users of the B2 Audio Ref Four amplifier who want a high-quality external bass control with advanced monitoring features.

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

Credit and Debit Cards

  • Visa
  • Mastercard
  • American Express
  • Discover
  • Diners Club

Digital Wallets

  • Amazon Pay
  • Apple Pay
  • Meta Pay (formerly Facebook Pay)
  • Google Pay
  • Shop Pay
  • PayPal

International Payment Methods

  • Bancontact
  • iDEAL

Bank Transfers

  • Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

  • Klarna
  • Affirm
  • Sezzle
  • Snap
  • Acima
  • Tiptop

If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

  • Standard Shipping: Free for orders over $100.
  • Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

  • Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
  • Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

  • Make sure you’ve received the shipping confirmation email with the tracking number.
  • Log into your account on our website and use the “Check Your Order Status” button.
  • If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.