If you already own any version of the Helix book, you can download version 1.4 for free from your Sweetwater account. Here's what's new compared to version 1.3:   534 pages (45 more pages than v1.3) In-depth analysis of v3.70’s nine new Cabs In-depth analysis of v3.70’s ten new Amps Complete parameter descriptions for the new effects (Prize Drive, Regal Bass DI, Feedbacker, Dynamic Bloom, and Nonlinear) 27 new presets featuring the new models in the v3.70