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Message: [QUOTE="Shamiso, post: 92726, member: 160"] Balance 9’s Solo mode compares an active EQ band with a flat band-pass signal while both are heard in complete isolation. It is a more controlled check than simply sweeping around until something ugly jumps out. The [B][URL='https://goldmidi.com/community/threads/rockheyday-brought-balance-9-eq-to-windows-and-macos.78127/']Balance 9 isolated solo workflow[/URL][/B] matters because the reference stays inside the same narrow slice of audio. You are not flipping between a processed full mix and an isolated frequency blob, then trying to remember what changed. [HEADING=2]Solo auditioning changes what you are listening for[/HEADING] Most EQ band-solo tools let you hear the part of the spectrum touched by the selected band. FabFilter Pro-Q 4, for example, solos the affected frequency area rather than the actual sound of the EQ move. It is useful for finding hiss, boxiness, ringing, kick thump, or the scratchy edge of a vocal, but the soloed sound is mainly a locator. Balance 9 adds another step. Its isolated A/B setup lets you compare the active band processing with a flat band-pass version of the same area, so the change itself gets separated from everything outside the band. Tiny gain and Q choices become easier to hear because the surrounding bass, mids, and top end are not constantly shifting your attention. Suppose a vocal has an annoying bite around the upper mids. A normal solo sweep can help you land on the area, but a narrow slice almost always sounds a little nasty when you stare at it for long enough. The useful question is whether your actual EQ move improves that slice, not whether the isolated slice sounds pleasant on its own. Keep the frequency fixed once you find the problem. Toggle between the active processing and flat isolated reference, then change gain or Q by a small amount. If the processed version sounds cleaner without hollowing out the useful tone inside the same band, you have a much better reason to keep the move. [HEADING=2]Narrow listening can reveal detail and also fool you[/HEADING] Human hearing already groups nearby frequencies through overlapping auditory filters rather than treating every hertz as a separate channel. [B][URL='https://pmc.ncbi.nlm.nih.gov/articles/PMC1752201/']Auditory filter bandwidth measurements[/URL][/B] also show that effective bandwidth changes with frequency and level, which is one reason a narrow isolated region can feel very different from the same material inside a full mix. Isolation therefore works best as a microscope, not a final vote. Pulling away the rest of the spectrum makes small resonances and tonal changes easier to notice, but it also removes masking and musical context. A 2 dB cut can sound wonderfully tidy in solo and completely unnecessary once the drums, bass, keys, and vocal are all playing together. Goldmidi’s article on [URL='https://goldmidi.com/community/threads/frequency-masking-is-more-than-spectral-overlap.76069/']frequency masking in a full mix[/URL] gets at the other half of the problem. Shared frequencies are normal, and a visible or audible overlap is not automatically something you need to carve out. Solo mode can tell you what lives in the area, while the full mix tells you whether the area is actually causing trouble. Aggressive resonance hunting goes sideways fast. Boosting a tight bell, sweeping until something hurts, then cutting whatever hurts will always find something because recorded sound is full of peaks. Balance 9’s flat isolated reference gives you a cleaner baseline, but it still cannot decide whether the peak matters musically. [HEADING=2]The flat band-pass reference keeps small EQ moves honest[/HEADING] A useful pass starts with the full mix. Notice the exact moment where a sound feels harsh, muddy, thin, nasal, or crowded, then use Solo to narrow down the suspected area. Once you are there, compare the processed band with the flat band-pass instead of wandering across the spectrum hunting for a new problem. Gain changes are easier to judge this way because both versions keep you focused on the same spectral neighborhood. Q changes become easier too. Widening a cut may remove the annoying center while also taking too much useful body around it, and the isolated A/B makes that collateral change much harder to miss. Level still deserves attention. A boosted band can seem clearer simply because the isolated version becomes louder, while a cut can feel smoother partly because it gets quieter. Keep the move modest, switch often, and return to the complete mix before deciding anything permanent. The best use is short and boring. Find the area, compare active versus flat, adjust one thing, then come back out of Solo. Spending five minutes listening to a narrow band trains your attention on details the listener will never hear by themselves. Balance 9 does not turn solo auditioning into an automatic resonance detector, and that is probably for the better. Its useful trick is giving you a controlled local reference while you make the move, then getting out of the way once the band is doing the job. [/QUOTE]

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