---
title: "beyerdynamic DT 900 Pro X vs Sony MDR7506"
url: "https://omorp.com/compare/beyerdynamic-dt-900-pro-x-vs-sony-mdr7506"
site: "Elan's Best (omorp.com)"
---

# beyerdynamic DT 900 Pro X vs Sony MDR7506

Both are picks from our guide: Best Studio Headphones for the Money (https://omorp.com/guides/audio/studio-headphones).

## Specs head to head

| Spec | beyerdynamic DT 900 Pro X | Sony MDR7506 |
| --- | --- | --- |
| Driver | STELLAR.45 dynamic | 40mm dynamic |
| Back type | Open-back | Closed-back |
| Impedance | 48 ohms | 63 ohms |
| Sensitivity | 100 dB SPL | 106 dB |
| Frequency response | 5 Hz - 40 kHz | 10 Hz - 20 kHz |
| Detachable cable | Yes (locking mini-XLR, two cables supplied) | No (fixed coiled cable, approx 3m) |
| Pads | Velour, replaceable | Faux leather, replaceable (third party) |
| Weight | Approx 345 g (without cable) | Approx 230 g (without cable) |
| Sound signature | Open, even, mild presence lift | Bright, mid-forward, fairly neutral |

## beyerdynamic DT 900 Pro X

Our rating: 9.1 out of 10.

Best for: Mixing at a desk, on an interface headphone output rather than a dedicated amp.

The DT 900 Pro X is beyerdynamic's answer to the two things people complained about for twenty years. The 250-ohm DT 990 Pro needed a real amp and had a fixed cable; the 900 Pro X uses the STELLAR.45 driver at 48 ohms, which any interface headphone output can drive, and puts a locking mini-XLR connector on the left cup with two cables supplied.

As an open-back it is the pick for judging reverb tails, stereo placement and where instruments sit relative to each other, all of which are harder to hear inside a closed cup. The tuning is more even than the DT 990 Pro it replaces: still a beyerdynamic presence lift, but without the sharp treble peak that made the older model punishing on harsh material.

The limits are structural. Being open-back, it leaks freely, so it cannot be used anywhere near a live microphone and it is not a shared-office headphone. The velour pads are comfortable but hold heat less well than they look, and they compress over time, which changes the seal and therefore the bass. And at this price the frame is still plastic with a metal headband core, which is durable but does not feel like the money.

## Sony MDR7506

Our rating: 7.9 out of 10.

Best for: Tracking and editing, where you need isolation and a reference you can learn cheaply.

The MDR7506 is the headphone clamped to engineers in half the studio photos ever taken, and the reason is a specific tuning choice: the treble is pushed forward, so mouth noise, clipped edits, sibilance and room hiss surface immediately instead of hiding under a flattering curve. For catching problems, that is the correct instrument.

It is closed-back and isolates well enough to track vocals against without bleed reaching the microphone, and it folds flat into a supplied pouch. At 63 ohms and 106 dB, any audio interface headphone output drives it to full volume.

The compromises are all long-known. The cable is a coiled three-meter lead permanently attached at the cup, so a snagged cable means a soldering iron, not a swap. The stock faux-leather pads flake and shed black flecks within a year or two of regular use, though replacements are a commodity item. And the same forward treble that makes it useful for editing makes it tiring for a long listening session, which is why almost nobody uses one for pleasure.

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Source: https://omorp.com/compare/beyerdynamic-dt-900-pro-x-vs-sony-mdr7506