Looking for 303 sounds?



AudioRealism BassLine 2 (ABL2)


Visit products page to download / order now!


Since 2003 ABL has established its sound as the industry standard. In 2007 ABL2 achieves important improvements in several key areas. Amongst new features the most important thing is the sound: The bass is improved for less muddiness. The filter has been improved to incorporate subtile nonlinear effects for additional squelch. The distortion unit has been improved with less aliasing. The controls have been calibrated to better match the response of the original. Moreover several new features are present: The new pattern analyzer which can be used to edit patterns and will even detect patterns from audio files.

ABL2 Summary Version 2.0 Manual Addendum in PDF format
ABL1.5 Manual Version 1.5 Reference Manual
  Audio Detection examples  
Original Pattern Detected pattern
group1_pattern_2a.wav abl2_pattern_2a.wav
group1_pattern_3a.wav abl2_pattern_3a.wav
group1_pattern_4a.wav abl2_pattern_4a.wav
group1_pattern_7a.wav abl2_pattern_7a.wav
  Audio examples and comparisons  
Original hardware ABL2
Sliding Sliding
Square wave + accents Square wave + accents
Saw with resonance Saw with resonance
Daft pattern Daft pattern
  Demo tunes  
  ABL2 Rawks Four ABL2 Instances, patterns created with audio detector on the drumloop. By Zooloo (Neil Ward - afroboogie recordings) . ~5Mb
  Acid-polyp ABL2 with 707 8-bit samples. By 303Lover. ~6Mb
  Das Acid House Classic Acid House type track by Ronny Pries utilizing ABL2, ASM, ADM and Drumazon. ~9Mb
  Demo tunes (V1.5 and earlier)  
Impakt (New) Outtakes from a liveset impakt@gapahuken05, OGG 9.7Mb
Tracid_ABLx3 Bubbly tripple ABL action by Kai Tracid. 1.1Mb
ABL_jacks Minimal acid by Ronny Pries. 1.6Mb
HardMoon Dance tune by HardMoon. Nice pattern programming! 2.5Mb
Celebrate Excerpt from FMU's remix of Celebrate by Reallife to be released on A Different Drum.
fmu-abl-demo1 Accent action by Fredrik Munter. The first voice of this demo is ABL and the other synths are Nord Lead and Access Virus B. 1.3Mb
  fmu-abl-demo2 Groovy Daft House by Fredrik Munter. The four instances of ABL in note mode make up all the synth voices in this demo. The ABL's are run through TC's phaser and reverb effects. 0.7Mb
  Out of Control Excerpt from Frank Chotai's excellent trance tune 'Out Of Control'. 1.7Mb
  ABL2.1 adds support for shuffle, but in standard and triplet timing modes.
  Pattern analyzer with Audio detection

The pattern analyzer is a tool for editing and analyzing patterns. In further aid to help users transition their original patterns into ABL an audio detection algorithm has been devised. That's right - it can create patterns using audio files as a source. How does it work? The original patterns are recorded under certain conditions, then simply hit Detect from wave and select the audio file. ABL2 will create a pattern resembling the audio input. Listen to the audio detection examples above for an demonstration.

  It is possible to copy and paste patterns directly from for example a forum or e-mail using the clipboard functions - no more saving and importing.
  Improved filter emulation

The filter has been improved so as to include the nonlinear behavior of the original. This give additional 'squelch' in fast sweeps. See the diagram below where one curve (red) represents the original filters frequency response at one instance and the other (blue) ABL2's response.


  Accent ducking

On the original 303 it will take the envelope a while to 'warm up' after an accent. When the accent knob is fully counter clockwise this can be perceived as a ducking envelope. This feature is now included in ABL2. Listen to these two comparisons: 303 ducking and ABL ducking.


  Pattern library
  The pattern library menu allows easy access to your favorite patterns. It also possible to load several patterns in one go by selecting multiple patterns from the Load Pattern dialog.
  Other improved features
  • MIDI Learn function now displays all mapped CCs
  • Load multiple patterns at once
  • Preferences dialog for easier setup
  • Pattern section buttons are now MIDI assignable
  • ABL2 imports the following file formats: RBS, PH and PAT
  • PNG support for easier user skinning
  • All ABL1 features remain
  Reviews and testimonials

Remix Magazine: "After closely comparing ABL2 with a genuine 303, it's clear that AudioRealism's virtual clone is a dead ringer for the real deal". Read the full review here!

Dancetech: "[We] give the ABL a totally resounding 10/10!!" (Visit dancetech.com for full review)

Kai Tracid: "The ABL is a real joy, the interface and sound is just like the Real thing! I've been using it extensively and it is totally stable."

  • 95 Euros (+ VAT if applicable)
  • ABL1 users may upgrade for a fee of 25 Eur.
  • VST 2.4 for PC
  • Audio Units and VST for Mac OS X
  Minimum System requirements
  • Windows 2000/XP, P4 1 GHz, 256 Meg RAM or equivalent
  • Mac OS X 10.3.9, G4 1 GHz or Intel CPU, 256 Mb RAM or equivalent

Features and appearance may change without notice. Certain features may differ between Mac and PC versions


(c) 2003-2009 audiorealism