Now that you choose to mention it, the initial two tracks appear to deficiency small bass, (aside from a bass drum strike just before the fade outside of Custard Pie). But then “In My Time of Dying” appears to have some a lot more bass… unsure what was happening https://claytonccumi.mybuzzblog.com/6219064/new-step-by-step-map-for-led-zeppelin-gold-records