Pricing and availability

We compare 600+ stores and found this item at 5 stores. Prices updated .

Sweetwater
4.5 (19)
$1,899.99
Guitar Center
4.5 (9)
$1,899.99
Reverb
4.0 (7)
$700.00 11 available Used
zZounds
5.0 (7)
$1,899.99
Thomann
4.9 (57)
$1,444.00 $1,433.00 $11.00 · All time low

Average Price: $1,567

High-end/Boutique

$200

$801+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 4 merchants for "Ampeg V-4B". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

With a rich history dating back to 1971, the Ampeg V-4B is a timeless all-tube bass amplifier head that has stood the test of time, offering 100 watts of pure tube-driven power. This reissue stays true to its vintage roots while integrating modern features that ensure it remains a favorite among bassists today. Designed to deliver classic Ampeg tone, the V-4B is equipped with a robust preamp section featuring 2 x 12AX7 tubes and a power section loaded with 4 x 6L6GCs, ensuring your sound is both bold and detailed.

The intuitive front panel provides a no-nonsense approach with Gain, Bass, Midrange, and Treble EQ controls, complemented by ultra-low and ultra-high boost switches for enhanced tonal flexibility. Its versatile connectivity options include a built-in DI output with a ground lift for seamless integration into any setup, whether you're in the studio or on stage. The V-4B's compatibility with various speaker configurations, thanks to its 2-, 4-, and 8-ohm outputs, offers immense flexibility, allowing you to expand your rig effortlessly.

This iconic amplifier head not only exudes vintage charm with its classic styling and chassis suspension system but also meets the demands of modern-day musicians with its FX loop and slave output features. Whether you're aiming for a clean, punchy tone or a gritty, overdriven sound, the Ampeg V-4B delivers with precision and power.

Key Features:

  • 100-watt all-tube bass amplifier head
  • 2 x 12AX7 preamp tubes, 1 x 12AX7 and 1 x 12AU7 driver tubes, 4 x 6L6GC power amp tubes
  • 3-band EQ with switchable mid frequencies
  • Ultra-low and ultra-high boost controls
  • Built-in DI output with ground lift
  • Configurable speaker outputs: 2-, 4-, 8-ohm
  • Preamp Out and Power Amp In jacks for FX loop
  • Classic Ampeg design with modern enhancements

Owner's manual

Ampeg V-4B User Manual

Product specs

Type Tube
Number of Channels 1
Total Power 100W
EQ 3-band, Lo/Hi Boost Switches
Preamp Tubes 2 x 12AX7
Power Tubes 4 x 6L6GC
Inputs 2 x 1/4"
Outputs 5 x 1/4" (speakers), 1 x XLR, 1 x 1/4" (slave)
Effects Loop Yes
Power Source Standard IEC AC cable
Height 11"
Width 24"
Depth 11"
Weight 41 lbs.

FAQs

What kind of tone can I expect from the Ampeg V-4B Bass Head?

The Ampeg V-4B Bass Head delivers classic Ampeg tones with a warm, rich, and punchy sound, perfect for rock, blues, and jazz. Its all-tube design provides a vintage character with powerful low-end response and clear mids.

Is the Ampeg V-4B suitable for live performances?

Yes, the Ampeg V-4B's 100-watt power output and robust tube design make it ideal for live performances, offering enough volume and presence to cut through a mix on stage.

Does the Ampeg V-4B Bass Head work well with effects pedals?

The Ampeg V-4B includes an effects loop, allowing seamless integration with effects pedals. Its all-tube circuitry ensures that the core tone remains warm and dynamic even with pedals engaged.

How does the Ampeg V-4B handle different speaker cabinets?

The Ampeg V-4B offers multiple speaker outputs, including 5 x 1/4" jacks, making it compatible with various cabinet configurations. It can drive multiple cabinets for a versatile setup.

What is the weight and size of the Ampeg V-4B Bass Head?

The Ampeg V-4B measures 24" in width, 11" in height, and 11" in depth, weighing 41 pounds. Its compact size makes it relatively portable for a tube amp head.

N Stuff Music

N Stuff Music

Ampeg V-4B 100W All-Tube Bass Head

Video thumbnail for Ampeg V-4B 100W All-Tube Bass Head by N Stuff Music

Ampeg V-4B 100W All-Tube Bass Head

N Stuff Music

N Stuff Music

Video thumbnail for Ampeg V-4B All Tube 100 watt Classic Bass Amp Head by Guitar Center

Ampeg V-4B All Tube 100 watt Classic Bass Amp Head

Guitar Center

Guitar Center

Video thumbnail for Ampeg V-4B 100W All-Tube Bass Head - Sound Clips by Ampeg

Ampeg V-4B 100W All-Tube Bass Head - Sound Clips

Ampeg

Ampeg

Video thumbnail for Ampeg V-4B and SVT-810AV - Sound Clips by Ampeg

Ampeg V-4B and SVT-810AV - Sound Clips

Ampeg

Ampeg

Video thumbnail for Ampeg V-4B Teaser by Plugin Alliance

Ampeg V-4B Teaser

Plugin Alliance

Plugin Alliance

Video thumbnail for Avatar B410 + Ampeg V-4B Review by redonKiLaus

Avatar B410 + Ampeg V-4B Review

redonKiLaus

redonKiLaus

Video thumbnail for Ampeg V-4B Reissue First Look and Overview by redonKiLaus

Ampeg V-4B Reissue First Look and Overview

redonKiLaus

redonKiLaus

Video thumbnail for Ampeg V-4B 100W All-Tube Bass Head by POLAR - Music & Pro Audio

Ampeg V-4B 100W All-Tube Bass Head

POLAR - Music & Pro Audio

POLAR - Music & Pro Audio

Video thumbnail for Ampeg: V-4B 100-Watt Tube Bass Head Amplifier by Noisegate

Ampeg: V-4B 100-Watt Tube Bass Head Amplifier

Noisegate

Noisegate

Reviews

PROS

  • Classic Ampeg tube sound, warm and rich harmonics

  • Versatile for both bass and guitar, handles pedals well

  • Powerful output suitable for medium to large gigs

  • Wide sonic bandwidth with deep lows and smooth highs

  • Portable at around 40 pounds, easier to move than larger models

  • Works amazingly with synthesizers for diverse musicians

  • Effective with a variety of basses and guitars, enhancing their tone

  • Impressive volume control, loud without losing quality

  • Positive impact on recorded bass tone quality

  • Durable and reliable for continuous use

CONS

  • Requires regular maintenance due to tube design

  • Can run hot, potentially needing additional cooling solutions

  • Some quality control issues, like improperly mounted tubes

  • Heavy and potentially cumbersome for frequent transport

  • Loudness can be overwhelming in small spaces

  • Some reports of build quality concerns, affecting long-term reliability

  • Generates a lot of heat, which could be a concern in tight spaces

  • Presence of fan noise mentioned, though not universally problematic

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Ampeg V-4B.

Build quality

  • The reissue is 20lbs lighter than the vintage model and fits modern cabs better due to its narrower design.

    Source

User experience

  • Owners report that the 100-watt V-4B reissue is loud enough for most gigs unless playing large stadiums.

    Source
  • Some users found a 2x12 cab insufficient with the V-4B, opting for models like the SVT4PRO with a 410HLF for more power.

    Source
  • Owners often find the 100-watt output sufficient with larger cabs like an 8x10, but potentially lacking when paired with a 4x10 for very loud bands.

    Source

Use cases and applications

  • Users playing with a 6x10 Ampeg cab find the V-4B sufficiently loud for stoner and grunge music styles.

    Source
  • The V-4B serves as an excellent pedal platform for guitar, offering versatile dialing options for various tones.

    Source
  • For guitar use, matching cabinet impedance is crucial; the V-4B supports a maximum of 8 ohms, limiting single 16-ohm 4x12 cab use.

    Source
  • Guitarists find the V-4B maintains a stiff, less spongy sound, with cleans offering a piano-like harmonic bloom.

    Source
  • For live performances, it's noted that engineers often prioritize DI over miking the V-4B, suggesting a preamp/cab sim pedal might be more practical for stage use.

    Source

Comparisons

  • Previous vintage owners note the reissue maintains vintage tone but resolves previous issues like obsolete tubes and excessive weight.

    Source
  • The Ampeg V-4B has a distinct gritty tone, exemplified in Queens of the Stone Age's "Songs for the Deaf."

    Source
  • The V-4B differs from the V4 with a low boost instead of high boost and reverb, making it more bass-focused.

    Source
  • The 90s V4BH is noted to have a rounder, more SVT-like preamp compared to the current reissue, which closely mirrors vintage tones.

    Source

Features and functionality

  • The V-4B has a serial effects loop, effective for time-based effects when the volume is sufficiently high.

    Source
  • The master volume shines when cranked but is less effective at low levels, typical for tube amps.

    Source

Critic Reviews

Ampeg V-4B Review - Premier Guitar

premierguitar.com

Ampeg's V-4B reissue is a modern nod to a classic, delivering vintage vibes with updated features. While it manages to capture the iconic all-tube tone, its lighter design and versatile outputs make it more user-friendly. The amp pairs beautifully with the SVT-212AV cabinet, offering a range of tones from gritty to clean. However, the V-4B's price point might deter some potential buyers. Overall, it brings a versatile sound palette to bassists who appreciate Ampeg's legacy but crave a touch of modernity.

positive

Ampeg V-4B review | Guitar World

guitarworld.com

The Ampeg V-4B reissue delivers a nostalgic, tube-driven experience that appeals to bassists seeking a dynamic and vintage sound. The amp excels with its rich, warm tones and impressive overdrive, making it a joy to play. While it lacks the extensive clean headroom of its SVT counterpart, this 100-watt powerhouse compensates with its portability and versatility. However, its sensitivity at higher volumes requires a bit of a learning curve. Overall, this reissue is a fitting tribute to the original, perfect for those who crave an authentic Ampeg experience without the heft of larger models.

positive
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5.0 out of 5

Based on 2 Reviews and 19 Ratings

5 star
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1 star
connormclean

I own a modified 1971 V4B, modded to accept KT66 power tubes

I have owned a modified 1971 V4B that has been retubed with KT66 power tubes. The simple, yet versatile control layout and great innate tone make this one of the greatest bass amps of owned to date. The two channels are great for running a wet and dry effect signal as well. The amp is paired with two custom LDS cabs, each fitted 1x15 and 2x6 custom hemp cone speakers made by PMR. Every bass player can find something to love about this amp!

jimmarchi1

commanding

this was the loudest amp I've ever owned... like a louder VT40 without reverb. Not voiced specifically for bass, at least my70s version wasn't. Good bass amp, great guitar amp if you wanted a loud clean sound. A clean sound so commanding it eats a twin for lunch. Only a Hiwatt or Sunn 2000s squeezes more out of 4 power tubes. Slightly different preamp tube compliment than a vt40 so easier to retube as I recall. But pulling 2 power tubes its still louder and cleaner than a vt40 or v2. A beast. I would owner another one.

Artist usage

Add artist
See how Tim Bagshaw uses Ampeg V-4B

Tim Bagshaw

Guitarist, Bassist

Electric Wizard

...
Verified via YouTube

an Ampeg amplifier looking very similar to V4B can be seen in this studio footage

See how Natsuko Miyamoto uses Ampeg V-4B

Natsuko Miyamoto

Singer, Bassist

Mass of the Fermenting Dregs

...
Verified via YouTube

https://youtu.be/YWSBtZ384qY?t=38 Natsuko Miyamoto does use the Ampeg V-4B Bass Head on Studio Recording

See how Aaron Bruch uses Ampeg V-4B

Aaron Bruch

Bassist

Breaking Benjamin

...
Verified via Photo

As mentioned on a Facebook post by Ampeg.

See how Simon Dragon Bouteloup uses Ampeg V-4B

Simon Dragon Bouteloup

Bassist

Kadavar

...
Verified via YouTube

Simon is seen using the Ampeg V-4B in many live videos often times two of them in stereo, source has him using them in a live studio setting.

See how Dopelord uses Ampeg V-4B

Dopelord

Singer, Guitarist

...
Verified via Photo

Dopelord uses the Ampeg V-4B bass amplifier head, as shown in a photo they posted on their Facebook page while preparing for a studio session. In the end it wasn't used during that session.

See how Robert Keating uses Ampeg V-4B

Robert Keating

Bassist

Inhaler

...
Verified via YouTube

In the video titled "Inhaler - These Are The Days (Live) | Vevo Studio," Robert Keating can be seen using the Ampeg V-4B bass amplifier head from the very beginning, at 0:01, before the performance starts. This video was published by InhalerVEVO on YouTube.

See how Kenny Vasoli uses Ampeg V-4B

Kenny Vasoli

Singer, Guitarist

The Starting Line

...
Verified via YouTube

In the Audiotree Live session featuring Vacationer, Kenny Vasoli is clearly seen using an Ampeg V-4B, as evidenced by the video provided by Audiotree.

See how Dougie Payne uses Ampeg V-4B

Dougie Payne

Bassist

Travis

...
Verified via YouTube

In Travis's iconic Live 8 performance, Dougie is seen using two Ampeg combos seen in the background of the stage.

See how Eloise Wong uses Ampeg V-4B

Eloise Wong

Singer, Bassist

The Linda Lindas

...
Verified via Getty Images

Eloise Wong is using an Ampeg V-4B Bass Amp Head performing at The Regency Ballroom November 16, 2023 in San Francisco, California. The photo shows the Ampeg V-4B being used with an Ampeg SVT-212AV Speaker Cab. Eloise is on the Ampeg Artist roster and her equipment is listed here: https://ampeg.com/artists/#a459

See how Martin McAloon uses Ampeg V-4B

Martin McAloon

Bassist

Prefab Sprout

...
Verified via Sproutology

Martin McAloon used the Ampeg V-4B bass amplifier head during Prefab Sprout's 1985 tour, as listed in "The Definitive Prefab Sprout Gear List" on Sproutology.

See how Nick Cageao uses Ampeg V-4B

Nick Cageao

Bassist

Mutoid Man

...
Verified via Premierguitar

"The second head that I use is an Ampeg V-4B"

See how Martha Schwendener uses Ampeg V-4B

Martha Schwendener

Bassist, Keyboardist

Bowery Electric

...
Verified via Archive

In this GuitarGeek rig diagram, made by Adam Cooper, Martha's rig includes an Ampeg V-4 Bass Head amp.

Used With

Based on how musicians on Equipboard use Ampeg V-4B, it is most commonly used with the following gear.

1 alternative for Ampeg V-4B, curated by the Equipboard community.

Fender Bassman 100T Amp

$1,564.34

Vintage or Discontinued cheaper alternative

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