Natively Yours! Iconic British Tube Sound from a Boutique Legend

If you are after that iconic guitar sound of the 60’s and 70’s, rest assured that the Dirty Shirley Amp will give you one hell of a tone! Influenced by the design of the Marshall JTM-45, the Friedman DS-40 delivers a rich sound that is reminiscent of the guitar work heard on early Led Zeppelin and ZZ Top records. The new Plugin Alliance version features 105 high end recording chains, a scalable user interface and a Recording Chain On/Off parameter. Now in all major native formats, take advantage of the vibrant tones made popular by the legendary British guitar amps used by the likes of Jimmy Page, Jerry Cantrell, Billy Gibbons and Eddie Van Halen.

Why Choose the DS-40?

Quickly reamp your guitar DIs through Friedman’s authentic vintage tone

Sculpt your guitar tone with Brainworx’s top notch FX rack

Select from 100+ killer Recording Chains that were captured using some of the best mics and outboard gear and tracked through a Neve VXS desk

A Little Bit of History

Inside the realm of boutique amp design, Dave Friedman is an absolute legend. Through the years, the Friedman brand of guitar amplification has grown with a timeless tone and remains in high demand among many top guitar players, producers and studio engineers around the world. Originally Dave designed The Dirty Shirley to capture Jimmy’s incredible tones that he was getting from Modded Marshall amps. The rest of the design focuses on the modern guitarist’s needs while still retaining that vintage sound –– The Friedman DS-40 is an excellent way to get the sound of a highly customized amp right in your DAW.

As is the case with many classic British amps, Friedman’s dual 6L6-based Dirty Shirley DS-40 amp is one channel amp with separate Gain and Master Volume controls for maximum flexibility between clean and crunchy sounds. Renowned for its uber dynamic clean tones while also offering more aggressive options, the full range of sounds of the DS-40 is indeed quite impressive: from blues to rock, country and everything in between. 

More on FX

Like with many of our other amps, inside this new native version you will have access to plugin only Brainworx developed features like the FX Rack with host syncable lo-fi delay, noise gate, tight and smooth filters, a power soak control and a power amp bypass. Together with the versatility and power of the amp’s legendary tone, the Friedman DS-40 offers a full range package when it comes to getting some seriously juicy guitar sounds.


  • Exacting emulation of the original Friedman DS40 Tube Guitar Amp approved by David Friedman 
  • Presence, Bass, Middle & Treble controls
  • Extremely versatile, it is capable of producing many styles of music from blues to rock and country
  • Gain Control & Master Volume Control 
  • FX Rack include host-syncable lo-fi delay, noise gate, tight and smooth filters, power soak, pre and power amp bypass
  • 105 High-End Recording Chains
  • Scalable User Interface
  • Recording Chain ON / OFF Parameter
  • Recording Chain detailed Info

Audio Examples

Industry Reviews

  • Dave Friedman

    Dave Friedman

    CEO & Founder Friedman Amps

    Sounds just like the real thing.

  • Shaun Lopez

    Shaun Lopez

    Deftones, Crosses, The Revolution Smile

    Absolutely love this amp! The eq knobs are so responsive, one slight turn and you really hear it. The DS-40 is my go to when it comes to in the box clean to semi dirty guitar tones.

  • McRocklin


    Guitarist, McRocklin & Hutch

    Just when I thought software amp sims have peaked, Plugin Alliance blew my mind with the release of the Friedman collection. From wonderful low gain vibes found in the DS-40, to blazing riff and… Read More

Customer Reviews

  • Great amp simulation1

    by Withajay
    I was pleasantly surprised with all of Plugin-Alliance's amp simulations. I own a Line 6 Helix and the tones in these plugins are much better. They sound much more like an amp. Nice work!!!
  • Brilliant

    by B. van kaa
    Probably one of the most authentic amp sims. They way it react to your playing is outstanding. Really nice. They also did a good job emulating the volume break-ups. You can't go wrong, feels like… Read More
  • DS-40

    by emehanik
    After the year of using it, I have to say DS-40 is the best mid-gain/crunch ampsim plug today (2020). But, I use third-party IR - OwnHammer's - they are much better, then IRs in the plug… Read More
  • Great for the non-metal PA users

    by Andre
    I was looking for an amp sim that could do really nice clean to crunchy rock/funk type guitar sounds. Most of the PA amp sims seem to be focused on metal, but this one really shines through with the… Read More
  • I think I can get along with this one.

    by ITS
    PA amp sims are good but I'm picky. Each amp has its personality and oftentimes they are not my style. Wish we had more amps to choose.
    So far this one fits my style most. Very best of… Read More


Supported Plugin Formats
AAX DSP, AAX Native, AU, AAX AudioSuite, VST2, VST3

Supported Operating Systems
macOS 10.9 through 11
Windows 7 through 10

Intel CPU only (minimum 2 GHz recommended)

x64-compatible CPU

System Requirements
Display resolution: 1440 × 900px or 1280 × 960px or higher
Memory: 2 GB RAM


With the Installation Manager, you can select, download and install just the Plugin Alliance products and formats you need for your system.



Friedman DS-40 - Changelog

Version 1.2 (Mar 22, 2021)
- General: Compatibility with Logic on Apple Silicon devices via the Rosetta-2 layer
- General: Fixed possible artefacts when freezing or bouncing tracks in Pro Tools
- General: Fixed automation highlighting disappearing in Studio One
- General: Improved license dialog visibility in dark mode

Version 1.1 (May 27, 2020)
- General: Qualified for use with the Windows 10 May 2020 Update
- General: VST3: Fixed potential hangs in a DAW upon loading
- General: Fixed logical issues in undo / redo behavior
- General: Fixed UI resizing issues in Ableton Live on Windows
- General: Fixed audio processing initialization issues on amp and delay products

Version 1.0 (Feb 14, 2020)
- Release version