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Black over-ear headphones with leatherette cushions, adjustable headband, angled 3.5mm plug, braided cord

HamiltonBuhl

HamiltonBuhl ST1BK Over-Ear Stereo Headphone 40mm 3.5mm TRS

SKU CH-RXYY-JTHP1 MPN ST1BK

Over-ear stereo headphones with 40 mm drivers, in-line volume control and a chew-resistant braided cable for classroom use

  • TypeOver the Ear
  • ColorBlack
  • Driver Unit1.6" / 40 mm
  • Frequency Response50Hz-20KHz
  • Input Impedance32 ohms
  • Sensitivity100dB ±4dB
  • Comfortable over-ear fit with leatherette cushions
  • Adjustable headband snaps to fit all ages
  • 40 mm drivers deliver 50 Hz – 20 kHz response
  • In-line volume control for quick level changes
  • 5 ft chew-resistant Dura-Cord with 3.5 mm TRS plug

Classroom-ready wired headphones

The HamiltonBuhl ST1BK is an over-ear stereo headphone built for daily use in K-12 settings. Its circumaural leatherette cushions and adjustable headband fit a wide range of head sizes for extended listening sessions. A 40 mm driver delivers a 50 Hz to 20 kHz response through a 32 ohm load at 100 dB sensitivity. The 120-degree angled 3.5 mm TRS plug connects to virtually any standard audio jack.

Replaces fragile consumer earbuds

Cheap in-ear models often fail under classroom handling and lack volume control for quick adjustments. The ST1BK adds a Dura-Cord cable with PVC jacket and braided nylon that resists chewing and knotting. In-line volume control lets teachers or students set levels without reaching for the source device. The rugged construction targets multi-year service where disposable buds last weeks.

Fits carts and labs without extra gear

The single 3.5 mm TRS connection needs no batteries, drivers or wireless pairing — plug into a laptop, tablet or media player and work immediately. At 0.37 lb the headset adds negligible weight to charging carts or storage bins. Five feet of cable gives freedom of movement while staying tethered to the device. No Bluetooth or software setup means zero IT overhead for deployment.

Highlights

  • Comfortable over-ear fit with leatherette cushions
  • Adjustable headband snaps to fit all ages
  • 40 mm drivers deliver 50 Hz – 20 kHz response
  • In-line volume control for quick level changes
  • 5 ft chew-resistant Dura-Cord with 3.5 mm TRS plug

Specifications

BrandHamiltonBuhl
ModelST1BK
Part NumberST1BK
TypeOver the Ear
ColorBlack
Driver Unit1.6" / 40 mm
Frequency Response50Hz-20KHz
Input Impedance32 ohms
Sensitivity100dB ±4dB
Connector3.5mm TRS stereo, 120° angle, thin barrel
Ear CouplingCircumaural
Cord Length5' Dura-Cord - chew-resistant, PVC-jacketed, braided nylon
WeightDimensions
7 x 6.25 x 3"
Weight
0.37 lb
Shipping Weight
0.65 lb
Shipping Dimensions (LxWxH)
8.2 x 6.4 x 4.5"
Wireless TypeNo
Shipping weight0.30 kg
Package size208 × 163 × 114 mm

Questions about this item

Does the 120-degree angled 3.5mm TRS plug clear a bulky phone case?

The 120-degree angle and thin barrel let the plug seat fully in recessed 3.5mm jacks even when a protective case is fitted.

How do I adjust the headband so it stays in place?

Extend each side until the notches click into the internal detents; the headband then locks and will not slide during use.

Can the leatherette ear cushions be replaced when they wear out?

The cushions are not user-replaceable; the headphone is designed as a single sealed unit for classroom durability.

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