Spectra of the different components of the SGWB for T_* = 100 GeV, α = 0.5, β = 10H_*, v_w = 0.95, and ε_turb = 1, compared to LISA’s power law sensitivity from Caprini et al. (2020) with an S/N threshold of 10. The SGWB spectra from sound waves are based on the SSM of Hindmarsh & Hijazi (2019, dashed red) and on the fit from HL simulations of Jinno et al. (2023) and Caprini et al. (2025, solid red). The spectrum of the turbulence is based on the model developed and numerically validated in Roper Pol et al. (2022a). The vertical lines indicate the relevant frequencies of the turbulence template ($\delta t_{\mathrm{fin}}^{-1}$ and f_turb) in blue, of the sound-wave template (λ_*⁻¹ and δλ_*⁻¹) in red, and the conformal Hubble frequency ℋ_∗ at the time of GW generation in black.