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Silvery in-ear monitors with zinc alloy shells and detachable silver-plated cable

AcousticSheep

AcousticSheep KZ AST 24BA In-Ear Headphone Silvery

SKU CH-49Z4-C0TWS

Wired in-ear monitors with 24 balanced-armature drivers, a detachable silver-plated cable and ergonomic zinc-alloy shells for high-fidelity listening

  • TypeHeadphone
  • Rich, detailed audio from 24 balanced-armature drivers
  • Crystal-clear signal transmission via 4-strand 200-core silver-plated cable
  • Durable, lightweight build with zinc-alloy shell and resin cavity
  • Comfortable, noise-isolating fit shaped to the human ear
  • Flexible 3.5 mm wired connection with detachable 0.75 mm 2-pin cable

24 balanced-armature drivers

The KZ AST fits twelve balanced-armature units in each earpiece for a total of twenty-four drivers. The configuration targets musicians and audiophiles who want detailed stereo imaging from a wired in-ear monitor. A detachable 0.75 mm 2-pin cable and optional microphone add flexibility for stage or studio use. Zinc-alloy shells with resin cavities keep the housings light while resisting wear.

Sustained listening performance

Silver-plated 200-core cable strands reduce transmission loss during long sessions so detail remains consistent. The 30-ohm impedance and 103 dB/mW sensitivity allow portable sources to drive the monitors without added amplification. Soft silicone tips and an ear-hook shape maintain a stable seal that preserves isolation over extended periods. Frequency response spans 10 Hz to 40 kHz for wide-range reproduction.

3.5 mm wired connection

The fixed 3.5 mm plug means the AST works only with devices that still provide a headphone jack or a compatible adapter. Builders who need wireless freedom or a USB-C native interface should look elsewhere. Cable length measures 125 cm with a five-centimetre tolerance for routing comfort. Detachable 2-pin connectors let owners swap cables without replacing the earpieces.

Highlights

  • Rich, detailed audio from 24 balanced-armature drivers
  • Crystal-clear signal transmission via 4-strand 200-core silver-plated cable
  • Durable, lightweight build with zinc-alloy shell and resin cavity
  • Comfortable, noise-isolating fit shaped to the human ear
  • Flexible 3.5 mm wired connection with detachable 0.75 mm 2-pin cable

Specifications

TypeHeadphone

Questions about this item

How much power does the 30-ohm, 103 dB/mW driver draw during all-day use?

At 30 ohms and 103 dB/mW sensitivity, the monitors reach loud levels with very little power from a phone or DAP, so battery drain stays minimal even during extended sessions.

What source connector and detachable-cable pin must my player provide for the 3.5 mm plug and 0.75 mm 2-pin interface?

The cable terminates in a standard 3.5 mm plug and connects to the earpieces via 0.75 mm 2-pin sockets, so any device with a 3.5 mm jack works and the cable can be swapped if needed.

Will the 10 Hz – 40 kHz range and 12 balanced-armature drivers per side integrate cleanly with an older portable amplifier?

The 30-ohm impedance and high sensitivity make the AST an easy load for vintage amps, while the wide 10 Hz – 40 kHz response reveals detail those older units can finally deliver.

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