The two cents nobody hears — except us. Two cents. In musical terms, that's a hundredth of a semitone — a gap so small that most people, even trained musicians, wouldn't consciously register it in a passing breeze. It's not out of tune in any way you'd complain about. And it's exactly the margin at which we throw a tube away.
The temptation to let it slide
Every workshop faces this moment: a tube that's close enough. It looks right, it's the correct length, it rings when you strike it. Selling it costs nothing — the customer will likely never know the difference. This is where most manufacturing quietly compromises, because "close enough" is cheaper and faster than "correct."
We don't sell close enough.
What the strobe tuner sees that the ear doesn't
A digital strobe tuner doesn't listen the way a person does. It measures the exact frequency a tube produces against the frequency it should produce, down to fractions of a semitone. Where a human ear might forgive a tube that's slightly sharp or flat, the tuner simply shows the gap — and the gap either meets our standard or it doesn't.
Two cents is our line. Not because the difference is dramatic on its own, but because tuning accuracy compounds. One slightly-off tube next to five correct ones doesn't just add a small error — it changes how the whole set resonates together, pulling the combined sound out of the relaxation register a well-tuned chime is built to sit inside.
A discipline, not a marketing line
This is the part of the process no customer ever sees. There's no photo of a discarded tube on the product page. It's not a feature we can point to — it's a floor we don't go below, workshop after workshop, tube after tube.
We'd rather cut three tubes to get one that's right than ship the one that's almost right. That decision doesn't show up in the sound you hear. It shows up in the sound you don't have to think about — the one that simply feels correct, the first time you hear it and every time after.
This is the same standard behind every Aura Blink chime — explore the collection to hear it for yourself.