Get $299 in UAD plug-ins and instruments FREE through 4/30! Learn more ›

Save $300 on UAD Accelerators through 12/31! Find a dealer ›

Get up to 70% savings on UAD plug-ins storewide! Shop 12 Days of UAD ›

Hello world 4!

Hello world 5!

The UAD HolidAI Sale — save up to 75% storewide. Shop Now ›

Shop Holiday Deals on UAD Spark. See My Offers ›

Unison Enabled

  • Overview
  • Features
  • Customer Reviews
  • 4.8/5
    (285)
$149.00
4.8/5
(285)

The iconic bass amp sound of the ’60s and ’70s, exclusively for UAD-2 and Apollo.

The Ampeg B-15 bass amp defined the sound of recorded electric bass. From Motown sides with James Jamerson to classic Stax records with Donald “Duck” Dunn, this 30-watt, 1x15, all-tube brute oozes character — delivering a warm and fat fundamental note that laid the foundation for ’60s and ’70s rock, funk, and soul.

Developed by Brainworx, the Ampeg B-15N Bass Amplifier plug-in perfectly emulates the circuitry, tone stack, and iconic thump of Ampeg’s limited-edition Heritage B-15N bass amp — exclusively for UAD-2 hardware and
Apollo interfaces.

Track and reamp with legendary all-tube, B-15 tone — from jazzy clean to warm overdrive to heavy distortion

Harness two flavors of the iconic B-15 circuit — 1964 and 1966 — each with switchable bias controls for further tweaking

Hone your tone with the robust and meticulously emulated two-band Baxandall EQ

Audition 42 separate high-end recording chains, featuring four different cabinets and multiple classic microphones

Take A Listen

Take A Listen
The Sound of Giants

The Sound of Giants

The Ampeg B-15N Bass Amplifier plug-in flawlessly captures the original hardware’s dual 6L6-powered circuit as well as its simple, ultra-musical two-band Baxandall EQ. Simply use the Volume control to dial in rich, smoky tones, perfect for jazz and soul, or inch the Volume up for a fat guttural growl that teams with harmonics and character.

Two Channels, Tons of Tones

Two Channels, Tons of Tones

An evolution of the classic B-15 recipe, the B-15N sports two channels — 1964 and 1966 — each offering two flavors of iconic tones. The 1964 side gives you a 25-watt cathode biased circuit, whereas the 1966 input features a 30-watt, fixed bias circuit. Sonically, the 1964 side is spongier and breaks up earlier, while the 1966 input gives you a tad more headroom and midrange beef. Additionally, you can toggle between selectable bias modes, yielding even more tones and textures.

B-15N FX Rack

B-15N FX Rack

The B-15N plug-in provides additional control over your sound through the inclusion of the Brainworx FX Rack. It features a Noise Gate to control low-end buzz, switchable high-pass and low-pass filters to provide even more tonal options, and a Power Soak circuit that allows you to dial in as much overdrive as you want, without having to crank the output gain.

Unison™ Technology for Apollo Interfaces

Unison™ Technology for Apollo Interfaces

Harnessing UA’s groundbreaking Unison technology, the Ampeg B-15N plug-in gives you the impedance, gain staging, and circuit behaviors that have contributed to making this iconic bass combo one of the most recorded bass amps in history.

Key Features

The classic tone of the studio staple Ampeg B-15N bass amp used on countless hit recordings
2 distinct preamp circuits (1964 and 1966) producing two flavors of vintage Ampeg bass sound
Unison™ technology for the tone, touch, and feel of the classic B-15N preamp section
Tone Controls: Baxandall style Bass and Treble (per channel)
42 Recording Chains with multiple speaker cabinets recorded in a state of the art room with stellar gear
Feels like a real amp when played through Apollo's Realtime UAD Processing
Physical input impedance and hands-on control of Gain staging with Unison technology

Customer Reviews

Ampeg B-15N Bass Amplifier

Overall Rating

4.8/5
(285)

D. Caruso

March 7, 2024

Excellent

Transforme vos basse de manière vraiment pro

D. Chevalier

January 22, 2024

Sounds like the real thing, recommended

The B-15N is one of those Ampegs that has its very own sound. My amp room is full and my wallet is poor but I needed a number of different bass amps for a recent project and this one sounds like my memory.

J. Anderson

January 7, 2024

Next best thing to a real B-15

I can't afford the $2,500 for a real vintage B-15N, but after using UAD's version on many of my recordings, I'm super pleased with the results.

j. Stewart

December 19, 2023

Great amp sim

This thing is nice ! Sounds fantastic and I use it way more than I thought I would . Don’t hesitate, just buy it . Another fantastic product from UAD .

H. Ruus

December 12, 2023

Unfortunately.... a bit disappointed

I have the Ampeg SVT plugin and thought this one would sound more old school with a swampy Motown sort of sound... but it doesn't. It's actually more trebly direct and not so soft
Definitely not what I was looking for.
All other plugins I have bought have been spot on and wonderful...
Wish I could trade this one for something else

V. Ferrera

December 10, 2023

Very good

To similar to the original!

J. Payne

November 27, 2023

Fabulous spongy bass tones

Tube amps give a certain sag and bounciness to bass that's hard to replicate, but this amp sim DOES IT. I'm a big P-bass + flats kinda guy, and for that sound, this amp just kills. I like the VR for bigger modern tones, but the B15N is something special.

As with all the UAD amp sims, make sure it's on a unison preamp spot, it actually makes the sim feel real.

J. Sutherland

November 18, 2023

Fat Bass Tone

Really love the way this sounds. Nice bass tone that sits great in the mix.

M. Kozlowsky

October 15, 2023

Good plugin

T. Poe

August 9, 2023

THE Bass Amp for Studio Sessions

Fender Precision Bass + Flatwounds + this plug-in gives you all the Motown mojo. Absolutely clinical application for studio sessions. I have a p bass with rounds, a p bass with flats, and all you need is this + your favorite pedals for grit. Outstanding.

B. Straburzynski

August 2, 2023

super

its grate !!!

A. Rosario

March 5, 2023

Good ole tube sound!

Good tube bass saturation!

s. mcaulay

January 28, 2023

bread and butter bass FTW

I pretty much turn this thing on this setting and track with it as is. Perfectly sits in the mix

H. Fivelsdal

January 25, 2023

The sound I was looking for.

The Ampeg B-15N helps me to get that characteristic growl from my P bass. It's very easy to get good sounds from this plug-in.

M. Ross

January 6, 2023

Fabulous

Sounds just like the real thing!!

U. Audio Account

December 15, 2022

Great emulation.

I got this amp and the UA version sounds great.

s. Faubert

December 8, 2022

The best bass amp plug in

Great discover always a great sound

C. Lee

October 17, 2022

Best of all the Bass Amp Plugins!

The B-15 is the best bass amp plug-in I’ve found yet and I own all UA’s bass sims and this one is by far the best.

S. Berry

October 13, 2022

killer classic tone

Tried all the bass plugins before purchasing and this one's the best. It's versatile, realistic, and I can get multiple classic bass tones whereas other plugins are more limited. Sounds great with some dirt on it too!

T. Kaas

July 1, 2022

The best bass amp plugin there is

I demoed all the bass amp plugins that UAD is offering and this is by far the best one. It's also easy and fast to dial in the perfect tone. It really knocks everything else out of the water!