• Twistura Beta IEMs in silver with copper cable and 3.5mm and 4.4mm plugs
  • Twistura Beta 11mm driver exploded view: glass diaphragm, dual magnets, dual cavity
  • Twistura Beta copper cable with interchangeable 3.5mm and 4.4mm plugs
  • Twistura Beta 5-axis CNC aluminum shell close-up
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Twistura

Twistura Beta IEM — 11mm Glass Diaphragm Dynamic Driver, 3.5/4.4mm Plugs

Twistura Beta IEM — 11mm Glass Diaphragm Dynamic Driver, 3.5/4.4mm Plugs
  • Genuine & Brand-New
  • Free Shipping · Ships from China
  • 1-Year Warranty
  • 45-Day Returns
$101.99 USD
$101.99 USD
Shipping calculated at checkout.

The Twistura Beta is a wired IEM with one 11mm dual-magnet, dual-cavity dynamic driver per side using a planar glass composite diaphragm, housed in a CNC aluminum shell with three swappable tuning nozzles and a 2-pin cable with 3.5mm and 4.4mm plugs. It suits single-driver fans who switch between phone dongles and balanced players.

Who the Twistura Beta is for

  • Phone and dongle listening: Rated at 24Ω and 124dB/Vrms, it suits low-power sources such as USB-C dongles and portable players.
  • Balanced players and amps: The oxygen-free copper cable takes interchangeable 3.5mm single-ended and 4.4mm balanced plugs, so one cable covers both kinds of source.
  • Tuning tinkerers: Three swappable nozzles (Standard, Vocal and Instrumental) change the tuning without changing earphones.
  • Detail listeners: Twistura says the glass composite diaphragm's low damping and high rigidity give fast transients, rich vocals and clear treble.
  • Skip it if: You need a microphone or in-line remote for calls; the included cable has neither.

Twistura Beta key specs

  • Driver: 11mm dual-magnet, dual-cavity dynamic driver (one per side)
  • Diaphragm: Planar glass composite: micron-thin glass layer with a flexible PU surround
  • Impedance: 24Ω ±15% @1kHz
  • Sensitivity: 124dB/Vrms @1kHz
  • Frequency response: 8Hz–21kHz (IEC61094, free field); 20Hz–20kHz effective (IEC60318-4, -3dB)
  • THD: ≤0.1% @1kHz, 94dB
  • Tuning: 3 swappable nozzles: Standard, Vocal, Instrumental
  • Cable and plugs: Detachable oxygen-free copper cable, 0.78mm 2-pin; interchangeable 3.5mm single-ended and 4.4mm balanced plugs
  • Shell: 5-axis CNC aerospace-grade aluminum alloy, silver finish
  • In the box: Earphones, cable, 3.5mm and 4.4mm plugs, 3 sets of ear tips (3 pairs each), 3 pairs of nozzles, carrying case

Genuine Twistura stock. Free shipping on every order, 45-day returns.

Twistura Beta vs similar options

  • vs SIMGOT EA500 LM: Costs less with a 10mm dual-magnet, dual-cavity driver and three tuning nozzles, but has a 3.5mm-only cable; pick the Beta for its 11mm glass composite diaphragm and 4.4mm plug.
  • vs TANCHJIM NORA: A single-dynamic-driver IEM with 3.5mm and 4.4mm plugs for a little less; pick the Beta for its 11mm planar glass composite diaphragm in a CNC aluminum shell.
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Specifications

Driver 11mm dual-magnet, dual-cavity dynamic driver, planar glass composite diaphragm
Impedance 24Ω ±15% @1kHz
Sensitivity 124dB/Vrms @1kHz
Frequency response 8Hz–21kHz (IEC61094, free field)
Connector 0.78mm 2-pin; interchangeable 3.5mm and 4.4mm plugs

What's in the box

  • Twistura Beta earphones (pair)
  • Oxygen-free copper cable, 0.78mm 2-pin
  • Interchangeable 3.5mm and 4.4mm plugs
  • 3 sets of ear tips (3 pairs each)
  • 3 pairs of tuning nozzles
  • Carrying case
Good to know

Buying from TonePier

Is this unit genuine?

Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.

Where does my order ship from, and how long does it take?

Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.

What if it isn't for me?

You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.