Carvin Ampeg (USA) B4R.

$285.00 Price Tier: Standard

This product is Vintage or Discontinued

0 wishlisted

0 saved

Page last updated Jul 01, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 1, 2026.

Store

Reviews

Price

5.0 (2)

$285.00 4 available Used

View Deal

Average Price: $285

Standard/Professional

$200

$801+

Price Tier

In the Bass Amplifier Heads category, Ampeg (USA) B4R. is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

^* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

Edit description

Ampeg (USA) B4R.

Product specs

Brand	Ampeg
Model	B4R 1000-Watt Rackmount Bass Amp Head
Finish	Black
Year	1998 - 2006
Made In	United States
Categories	Bass Heads
Color Family	Black
Electronics	Solid State
Impedance	2 ohms, 4 ohms
Number of Channels	1 Channel
Number of Inputs	2 Inputs
Output Power (Watts)	1000
Power Tube Type	None
Reverb	None

FAQs

What kind of power output does the Ampeg B4R provide?: The Ampeg B4R delivers a powerful 1000 watts of output, making it suitable for large venues and loud performances.
Is the Ampeg B4R suitable for live performances?: Yes, with its 1000-watt output and solid-state design, the Ampeg B4R is well-suited for live performances, providing a robust and reliable sound for bassists.
What type of electronics does the Ampeg B4R use?: The Ampeg B4R is built with solid-state electronics, offering consistent performance and reliability without the need for vacuum tubes.
How many inputs does the Ampeg B4R have?: The Ampeg B4R features two inputs, allowing for versatile connectivity options for different basses or setups.
What is the impedance range for the Ampeg B4R?: The Ampeg B4R supports an impedance of 2 ohms and 4 ohms, providing flexibility in speaker cabinet configurations.

Videos

Add video

Jam Penitenti (produção musical)

Fender Jazz Bass 1969 vintage e Ampeg B4R....VENDO!

Jam Penitenti (produção musical)

Kramer XKB20 in a Ampeg B4R and Ampeg 810 classic

ShaolinLambKiller

Reviews

Add review

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Ampeg (USA) B4R..

Features and functionality

0 0

The B4R version includes speakon outputs, replacing the older banana jacks found in the B4 model.
Source
0 0

Both the B4 and B4R are rack mount heads, with the B4 being the older version.
Source

Comparisons

0 0

The B4R is essentially an updated version of the B4, with slightly higher power ratings.
Source
0 0

The Ampeg B4R is still considered a "beast" by some users, highlighting its robustness compared to newer options.
Source
0 0

The B4R is suggested as a more powerful alternative to the SVT-400T for those seeking a similar power level to the SVT-4, often available between $300-$400 used.
Source

User experience

0 0

A user has successfully used the B4 through a Mesa/Boogie 2x15 for 15 years, indicating long-term reliability.
Source
0 0

Owners appreciate the B4R for its reliability, with some users having it as their go-to amp head for several years without issues.
Source

Use cases and applications

0 0

The Ampeg B4R is favored by metal bassists in small bands for its ability to fill sonic spaces effectively, especially when paired with an Ampeg 8x10 Classic cabinet.
Source

Value and pricing

0 0

B4R units are frequently listed at higher prices but typically sell for $300-$400, providing a cost-effective option compared to other high-power Ampeg models.
Source