Short answer: the Dan Clark Audio Aeon RT Closed. Both are rated 3.3/5 for sound quality (#291 and #283 of 481 over-ear headphones), and the Dan Clark Audio Aeon RT Closed costs $499.99 against $549 for the Shure SRH1540, so with nothing between them on sound quality, price settles it.
What the Dan Clark Audio Aeon RT Closed does well: A light 0.7 lbs (328 g) closed-back planar with a neutral bass level (within 0.1 dB of target) and a Harman score of 66, sold by Dan Clark Audio for much less than its flagships. The catch: Treble sits about 2.9 dB below target, so it can sound a little dull next to brighter headphones, and it measures behind the older Dan Clark Audio Aeon Flow Closed (79).
The case for the Shure SRH1540: The smoothest of this group, with just 2.33 dB of deviation and a biggest dip of only 3.3 dB near 8.6 kHz, so treble is more even and cymbals keep their detail. Watch for: Upper bass sits about 5.1 dB above target, which adds warmth and some boom that can cloud kick drums and male vocals.
Buy the Dan Clark Audio Aeon RT Closed. Both are rated the same for sound quality, and it costs $49.01 less than the Shure SRH1540.
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A light 328 g closed-back planar with a neutral bass level (within 0.1 dB of target) and a Harman score of 66, sold by Dan Clark Audio for much less than its flagships.
Dan Clark Audio $499.99 eBay
The smoothest of this group, with just 2.33 dB of deviation and a biggest dip of only 3.3 dB near 8.6 kHz, so treble is more even and cymbals keep their detail.
Amazon $549.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Dan Clark Audio Aeon RT Closed | Shure SRH1540 | |
|---|---|---|
| Price | $499.99 | $549.00 |
| Ranked | #291 of 481 in Over-Ear Headphones | #283 of 481 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Dynamic |
| Impedance | 13 ohms | 46 ohms |
| Sensitivity | About 90 dB/mW | 99 dB/mW |
| Weight | 0.7 lbs (328 g) | 0.6 lbs (286 g) |
| Harman Preference Score | 66 (measured by oratory1990, via AutoEQ) | 67 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.54 dB standard deviation | 2.33 dB standard deviation |
| Tonal Tilt | -1.06 (negative is warmer, positive brighter) | -1.18 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.5 dB at 30 Hz) |
| Drivers | - | 1 x 40mm dynamic |
| Frequency Response | - | 5Hz - 25kHz (Manufacturer specified) |
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