Reference

A neutral-oriented starting point for tonal balance. Understand the reference behind the graph, then compare product responses with a clear point of comparison.

Frequency responseIllustrative tonal contours
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Your main selection stays in focus.

Read the scale
Read the dB scale

Curves align at 60 dB at 1 kHz. Each horizontal grid step is 10 dB.

Levels compare curve shapes. They are not calibrated sound pressure or listening volume.

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Linsoul sound lab measurements, aligned at 1 kHz with the style curves.

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Start with a reference point.

A neutral-oriented starting point, with an identified reference.

Listen for

Consider whether tonal balance stays consistent across familiar recordings instead of assuming one curve is correct for every listener.

The trade-off

Reference means little without a target and measurement context.

Reference and Balanced

A benchmark and a preference are not interchangeable.

This page uses Harman in-ear 2019 as its named comparison reference. Balanced adds a small tilt in this illustration. Neither turns a sound label into a measurement certification.

Explore Balanced sound

Shop Reference IEMs & headphones.

Products tagged Reference, as their main sound or a secondary trait. Each has its own tuning; the graph above is not a measurement of these products.

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Reference to what, exactly?

Reference is most useful when the benchmark is named. On this page the illustrative target uses Harman in-ear 2019 as its base; a product's sound label is a separate editorial description.

Name the benchmark

A reference line is a declared comparison, not a universal preference. Our target follows the sourced in-ear benchmark without an added style offset. A product carrying the Reference tag is not automatically an exact match to it.

Keep the named target and the product tag separate.

Compare on the same basis

The supported product traces and target are aligned at 1 kHz on a 70 dB display reference. This removes their starting-level offset for comparison; it does not turn the plot into calibrated listening volume.

Same alignment, same axis, identified source.

Use the curve for the right question

Inspect broad tonal departures and the source conditions. A close trace is not a studio certification, a distortion result or a complete account of imaging. Decide which listening task needs a benchmark and verify the actual product for that task.

A useful reference makes its limits explicit.
A question to listen with

Which benchmark and listening task are you comparing against?

Music you know. Details to notice.

Reference, with your music.

Choose the part of the performance you enjoy. Each path below leads to products tagged for both Reference sound and that preference.

Start with a defined listening task.

A sound you enjoy is one part of the choice. Match it to your listening goal, then check the actual product.

A little more context

Before you choose reference.

Why is Reference not a flat frequency-response line?

A target measured through an ear simulator need not be horizontal. Aligning it at 70 dB at 1 kHz shifts its position without flattening its shape.

Is Harman in-ear 2019 the only valid reference?

No. It is the explicit reference included in this review build. Other named targets require their own source data and measurement context.

Does the Reference tag certify studio accuracy?

No. A sound label is not a measurement certificate. Evaluate the model and the monitoring task with appropriate evidence.