Modeling tones have become dark and dull in James Tyler Variax Guitars / Workbench HD Posted September 8, 2017 Actually, you can go back to v1.71 by selecting Windows XP in Monkey (see the following quote). If you're struggling with dark lifeless tones, too much difference between mags and piezos, or if you seek better sounding acoustic models, FIRST try reinstalling the latest firmware. According to the L6 knowledge base dull/dark tones are a "known issue". Here's a direct quote: "A seemingly complete update can result in dull/dark audio output on all settings. This can be fixed by performing the update again." If that doesn't work, rolling back to an older version is your next option... But bear in mind, older firmware requires older non-HD Workshop, which means you'll lose some capability. However, if you change your mind, you can always return to more recent versions. Ok got it sorted, gives option to roll back from file, I didn't have the file, when you go to download it with windows 10 its not available,but if you say you have windows xp it is there to download. Got it downloaded and have it installed.Acoustics in my opinion are much better in v1.71 tru a pa anyway in a band situation.