Ampeg® B-15N Bass Amplifier
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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
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
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
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
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.
Customer Reviews
h. lelieveld
April 1, 2021
Sooo good for my precision.
I was actually quite happy with the unison DI input of the neve 1073. But then I tried this one out. Soooo good. I'm really...
Read MoreL. Pauselli
February 13, 2021
Huge sound
It is another sound respect Ampeg SVTR , so you can choose beetween them, nice the treble knob!
Read More.
January 22, 2021
Awesome Plugin!
Love this plugin! A must if you want to lay down solid, great sounding bass tracks for songs! Love using it on Americana, Latin, Country, and Pop songs!...
Read MoreR. Craig
January 21, 2021
Good, but not my favourite Ampeg
Decent plugin, and have found places to use it, but sometimes I find it sounds a bit fake.. I prefer the amp models on my Kemper or even some of the other Ampeg models from UAudio.
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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
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Customer Reviews
Ampeg B-15N Bass Amplifier
h. lelieveld
Sooo good for my precision.
I was actually quite happy with the unison DI input of the neve 1073. But then I tried this one out. Soooo good. I'm really really happy with my old precision with flatwounds into this amp. I can great get disco, funk and rocksounds. It's quite dirty, but in a good way and it works really well in a mix. So that's it, I have found my sound. Thomastik flatwounds and the UAD B 15.
L. Pauselli
Huge sound
It is another sound respect Ampeg SVTR , so you can choose beetween them, nice the treble knob!
UAD User
Awesome Plugin!
Love this plugin! A must if you want to lay down solid, great sounding bass tracks for songs! Love using it on Americana, Latin, Country, and Pop songs!
R. Craig
Good, but not my favourite Ampeg
Decent plugin, and have found places to use it, but sometimes I find it sounds a bit fake.. I prefer the amp models on my Kemper or even some of the other Ampeg models from UAudio.
L. Caucci Molara
Bestiale
Da avere se amate il basso!
L. Caucci Molara
Bestiale
Assolutamente da avere se amate il basso
E. Bassi
A M A Z I N G
Simply amazing.No difference between plug and real.Absolutely a must have Uad plugin.
A. Nelson
This is the real deal!
I owned a '68 B-12N for 25 years and spent years playing through a B-15 and a B-18. This plug-in captures that amp!! I completely recognize the Ampeg fliptop sound and feeling but without tube/cap/pot replacements and with recall. So good!
J. Boeke
Saved me a long long search
Now my Fender Jazz Bass '72 is really sounding like an even older Precision somehow. No need to look further, I can sound like James Jamerson if (I practice my index finger a lot more)
F. Trentini
Very good
I own a couple of Ampeg amps (SVT & Portaflex) so I know exactly what the "real deal" sounds like. This beautiful plugin reproduces that tone and vibe with great accuracy. Well done.
F. Trentini
Very good
I own a couple of Ampeg amps (SVT & Portaflex) so I know exactly what the "real deal" sounds like. This beautiful plugin reproduces that tone and vibe with great accuracy. Well done.
S. Daunt
Best Bass Amp Plugin so far
Of all the bass amp sims this one feels the best to me. Warm fat and clear. The fx rack add ons are useful too.
A. Reverberi
Solid
Solid and very versatile, another great Brainworx amp sim
T. Hansen
Like the Real thing.
I was planning to buy the Ampeg portaflex, and I probably will sometime in the future. But now i’m not in a hurry anymoore. This plugin is great! It puts the bass perfectly in the mix with all the beautiful tone, grit and dirt you can possible expect from a real tube amp. It just sounds Amazing!
F. St-Gelais
Green Day!
Decided to give this a try after reading Butch Walker used it on the latest Green Day album, which has killer bass tones (in my opinion). Absolutely love it. I feel ambarassed that I overlooked it for so long but better late than never!
E. Koch
Eleven
offering the OX Box technology in a plugin would be kind of a big thing to people..
something about the way a tube rectifier supply reacts to loading....if Mesa/Boogie is going to be a snot about licencing plugins, then make Eleven with selectable power supply rectifiers, and just walk around them..E. Koch
Eleven
and make sure you have Brainworxs get you the B-15N power section here for Eleven...
it's the only tube rectifier driven 6L6 sectionE. Koch
Eleven
you get all the power amp sections from the Brianworxs plugs, get the acoustic feedback from Softube, and the cab and mic modeling from the UA OX box, and put it all under one GUI....Eleven.
E. Koch
Eleven
think of Eleven as a consolidated modular tube power amp/cab/mic/and adjustable acoustic feedback plugin,
( where guitars and pickups are already modular, and preamps are going that way.. );
a way to get rid of the soaked amp heat, and the electrical power consumption that entails.
Eleven would be a true "green plugin"E. Koch
Eleven
think about how much national electricity would be saved if Eleven had modeled power amp sections....then, not only could people use the Brainworx Plug preamps, but also people wouldn't be power soaking their real tube amps....
and maybe more tube amp manufacturers would make amps with separate standby and power switches for their amp's preamps...or just start offering real tube preamps..
synthesizers were modular from the beginning...i don't understand why guitar amplification would take so long.
