Exceptional detail, resolution, and soundstage/imaging for a planar IEM — owners repeatedly call out layered, resolving sound and speed of response that's hard to top
Outstanding value — owners who paid $130-$202 call it a no-brainer, a bargain, and say it punches way above its price class
Beats gear costing far more, with owners naming Sennheiser IE800, 64 Audio U18s, JH Audio Roxanne customs, and pricier trihybrids as being outperformed
Owners complain about
Treble sibilance and harshness (often tied to an 8kHz peak) that some owners find fatiguing or even painful over long sessions
Some owners hear it as thin, gutless, or lacking mid-range punch, with an artificial/metallic timbre compared to DD or BA hybrids at similar prices
Unit-to-unit QC inconsistency — reports of channel imbalance, rattling bass distortion, and one earpiece losing sound when the head is tilted
✓Bass-loving planar fans wanting big sub-bass slam without spending $500+
✓Budget-conscious enthusiasts scaling up power via desktop amps/DACs
✓Listeners of EDM, hip-hop, rock, and industrial wanting energetic, detailed sound
✓Buyers who plan to swap stock tips/cable for foam or aftermarket tips
Skip it if
Treble-sensitive listeners who can't tolerate sibilance or an 8kHz peak
Fans of neutral, natural, or vocal-forward tunings over bassy/metallic timbre
Get the Letshuoer S12 Pro if
✓Value-seekers wanting a technical planar under $200
✓EDM, rock, and metal listeners who like energetic sound
✓Listeners comfortable using EQ to tune the treble
✓People wanting a small IEM for long listening sessions
Skip it if
Treble-sensitive listeners who won't EQ
Bassheads wanting thick, weighty low end
What Timeless owners think
Owners of the 7hz Timeless overwhelmingly praise it as a giant-killer: for $130-$200 it delivers detail, resolution, and soundstage that many say beats far pricier gear like the Sennheiser IE800S, 64 Audio U18s, and even $3,000+ setups, with textured, authoritative bass and comfortable daily-wear fit. A vocal minority pushes back hard, though, calling out fatiguing treble sibilance around 8kHz, a thin or metallic timbre that can feel gutless next to similarly priced hybrids, and some unit-to-unit QC issues like channel imbalance or rattling bass. A smaller but consistent complaint comes from upgraders, who feel the Timeless II narrowed the soundstage and lost detail compared to the original or AE version. Fit is polarizing too — some find the nozzle short or housing oversized for their ears. Overall consensus: a genuine budget-planar benchmark whose tuning simply isn't for everyone.
What Timeless owners say
“My personal experience with the Timeless though, Im extremely impressed.”
“The S12 is brighter than the HeyDay (to my ears), so I would recommend a warmer amp source to really make them shine, and I would assume that they would pair great with tube amps”
“The bass on most planars including the S12PRO decays quickly. Gives the entire sound profile a lighter note weight and no amount of tip rolling will change that aspect (I went through 12 pairs).”
Timeless vs Letshuoer S12 Pro: frequently asked questions
Is the Timeless or the Letshuoer S12 Pro better?
Real owners rate these about evenly: 67% of 175 Timeless owners recommend it, vs 66% of 106 for the Letshuoer S12 Pro.
Who should get the Timeless?
Owners point the Timeless at bass-loving planar fans wanting big sub-bass slam without spending $500+, and budget-conscious enthusiasts scaling up power via desktop amps/DACs.
Who should get the Letshuoer S12 Pro?
Owners point the Letshuoer S12 Pro at value-seekers wanting a technical planar under $200, and eDM, rock, and metal listeners who like energetic sound.
What do owners complain about?
The most-cited downside of the Timeless is treble sibilance and harshness (often tied to an 8kHz peak) that some owners find fatiguing or even painful over long sessions. For the Letshuoer S12 Pro, it's bright, sometimes harsh treble.