Ampeg® B-15N Bass Amplifier

Ampeg® B-15N Bass Amplifier

Unison Enabled

Regular Price: $149.00


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Regular Price: $149.00


You'll Save 33%

You have no items in your shopping cart.

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.

Now You Can:

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

S. Duryea

August 19, 2016

Warm and punchy..

Love this amp!! Easy to use and cuts through a mix like warm butter.. My go to amp for now until UA comes up with something better, which is always the case....

C. McDonald

August 18, 2016

Ampeg B15

I am old school and remember this amp. This software makes the perfect emulation without the weight and the wait for the tubes to warm up.
Thanks you UAD for making my life easier. :-)

I. Papagiannidis

August 6, 2016


Great emulation ! tightens up the bottom adds fantastic warmth and low end and makes the bass sounding more in your face. great also for adding distortion to the bass.
well done once again!

H. Barnard

August 2, 2016

5 Stars

Another great sounding amp emulation from UAD... all the warmth and tube tone of the B15 amp.

D. Thompson

August 14, 2016

Still Demo'ing

This plugin, like many other UAD-Sim's just doesn't do it for me

- Lack of that "something"
- I cannot load my own IR's
- There is definitely something that I am not getting which I do get from a certain $12 competitor (I don't work for the competitor)
- The bass is just the same, there really is not much of the magic that UAD seem to achieve with other things such as Comps, Strips

My personal opinion is I won't be buying another UAD amp sim until they truly do make something special. Otherwise, go for the $12 competition. These sims, all of them, really do not cut it in my opinion. Comparing with a $12 sim, NO WAY!

Sorry UAD but you are lacking something and it's looking more to be "hype" than quality.

R. Roelofs

August 22, 2016

Quite out of my mind about that thing.

tomorrow my pay check
tonight recorded a heck of a song with this piece.
typically something, like the bluesbreaker you wanna use on 44.1, you know: nothing too fiddly, straight vibes in the belly with a perfect mixdown from your daw of course (sd hd to write to).
If Robin Hood took the money back from the rich and returned it to the poor, UNIVERSAL AUDIO took ROCK back from the rich and returned it to the poor! (yeah, yeah UA, you may use that quote:))

D. Thompson

August 16, 2016

No Buy - Sorry UAD

Ok, demo'd again after your speedy response.


- The sim doesn't add any actual real difference to the competition I've compared with
- The lack of custom IR loading is huge factor
- As much as it's modelling (at a reasonable price) an Ampeg B-15N I do not think when it's released natively there will be any difference whatsoever

What I'd like to see is;

A high quality, a real UAD specific, tailored exclusively forever to UAD that is, bass sim that allows Cab Lab 3 type IR loading. A very unique plugin yet modelled on a modern amp head and is Unison including the IRs!

Honestly guys, I have not bought a single new product and I'm not even going to demo unless it truly is unique to UAD. Otherwise, you do good plugs

H. Barnard

August 1, 2016


Another great sounding amp emulation from UAD... all the warmth and tube tone of the B15 amp.

S. Roefs

March 15, 2018


Versatile plugin with convincing attitude. It's actually inspiring to play through this virtual amp!

N. Tachizaki

March 1, 2018

Good plugin.

Good plugin.
Thank you for developing a good plugin.

D. Fa

February 12, 2018

Gritty and Smooth

I love the way it can go from smooth to really narly and gritty.

D. Fa

February 12, 2018

Gritty and Smooth

I love the way it can go from smooth to really narly and gritty.

UAD User

February 5, 2018

Full bass sound

Brings nice and rich harmonics to a simple DI line recorded bass, and its versatility gives you many choices of sound , all good. Really musical and helpful.

P. Holmertz

February 5, 2018

Great presence

Makes the bass sit right where I want it in the mix. Excellent sonic performance and amazing emulation.

T. Rosado

February 4, 2018

Super realistic.

Sounds very very good, I never tried an original hardware version but this plug in feels unbelievably real. A great investment for my recording studio.

F. Biagetti

January 18, 2018

Really nice for THAT sound

If you're looking for a "vintage" 60ies sound that's the way to go. I guess you could use it for other purposes but that would require some tweaking
I'd say it's a great one trick poney

S. Long

January 16, 2018

Fantastic Emulation

Another great amp emulation from UAD. Gives 6o's punchy tone and quite versatile!

M. Julien

December 6, 2017


I own the SVT Vr and now this one, the B15 is impressive. I like To plug a Fender into an API vision for sculting my bass and send the signal to AUX 1 & 2, blending the 2 amplifiers. The SVT for the punch and roundness, B15 for the distorsion.
My Sansamp tech 21 sounds thin comparing to this.
Superb emulations.

N. Peklinsky

November 14, 2017

UAD Ampeg B15N Unison Plugin

Worth every dollar! This amp plug is a ball to work with and literally emulates the B15N from beginning to end! The tones are dead on when compared to my 1967 B15N! Also great for tracking guitar. The presets provide a wide range of sound and possibilities and faithfully recreate what made the Ampeg B15N Portaflex one of the most important bass amps in history.

R. Jasman Jr

November 9, 2017

Instant Tone

Great sounding plug-in with useful features not on the original. Instant girth and character. One of my favorite plug-ins. I find it more flexible than the SVT plug-in.