The TH900 is described as having better vocals and bass compared to the TH-X00, with a cleaner sound and larger soundstage, albeit not massive.

The TH900 MK2 Signature Edition's treble can divide users, whereas the Audeze LCD-X benefits significantly from EQ to enhance its resolution and bass texture.

The TH900 MK2 Signature Edition impressed with bass impact more than the Audeze LCD-X, which underwhelmed without EQ, highlighting the TH900's suitability for bass-heavy genres.

Anniversary-tuned TH900 versions have a less pronounced V-shape, which may appeal to users sensitive to treble.

The TH900 is praised for its powerful bass compared to the LCD2.1, with mids being stronger on the LCD2.1 but less neutral than the HD800.

The EMU Teak offers a similar sound signature with more distortion due to its design, providing an alternative with less bass emphasis and more forward mids than the TH900.

The TH900 excels with dynamic, weighty bass for genres like hip-hop and EDM, making it preferable for listeners seeking impactful sound.

Known as a "fun" headphone, the TH900 excels in delivering an exciting listening experience, even if it's not technically accurate or neutral.

Owners consider using Yaxi pads with TH900 for tuning adjustments, as different foam densities in TH900 models affect bass levels.

Using Lawton cups, such as African Ebony or Quilted Maple, enhances sound quality and aesthetics, with some preferring larger openings for comfort.

Despite superior materials, some Fostex TH900 units have hinge issues that may become loose over time, potentially requiring occasional tightening or part replacement.

The TH900's hand assembly in Japan and intensive driver matching process contribute to its superior build quality compared to third-party manufactured models like the TH-X00.

Some owners find used TH900s for $600-$700, offering a cost-effective entry into high-end headphones with abundant and pleasant bass.

The TH900 MK2's pricing at $999 is considered a good value, with some owners purchasing used TH900 MK1 for as low as $600 in perfect condition.

The stock pads on the TH900 may become uncomfortable after an hour due to their shallow depth, leading some to prefer deeper pads.

The TH900 takes EQ well, making it versatile for genres like dubstep, EDM, and rap, where bass slam is particularly desirable.

The TH900's bass impact is highlighted as being among the hardest hitting for bass-focused listeners, while its non-linearity is a point of contention.

The TH900 is noted for its resolving capabilities in higher frequencies, offering significant detail retrieval when paired with a quality DAC.