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Black closed-back on-ear headphones with padded headband, thick ear cushions, coiled cable and volume wheel

Nady Systems

Nady Systems QH-200 closed-back headphone 40mm 32Ω 105dB 20–20000Hz 3.5mm 6.3mm adapter

SKU CH-SBEF-ZH5FA MPN QH-200

Closed-back studio headphones with 40mm drivers, 32Ω impedance, 105dB sensitivity and a 20–20000Hz range, plus in-line volume control and 3.5mm/6.3mm adapter

  • TypeOthers
  • Closed-back design blocks outside sound
  • 40 mm drivers cover 20–20 000 Hz range
  • 32 Ω impedance suits portable and studio gear
  • 105 dB sensitivity delivers loud, clear output
  • 6 ft cable with in-line volume and 3.5 mm / 6.3 mm plugs

Closed-back studio headphones with 40mm drivers

The Nady Systems QH-200 is a pair of closed-back studio headphones built around 40mm drivers. They present a 32Ω impedance and 105dB/mW sensitivity for high-volume capability. The 20–20000Hz frequency range covers the full audible spectrum. A 3.5mm stereo plug and 6.3mm adapter connect to consumer and professional audio devices.

Six-foot cable with inline volume wheel and 6.3mm

A 6-foot cable provides slack for desk or studio positioning. An integrated volume control wheel on the cord allows on-the-fly level adjustments without reaching for the source device. The supplied 6.3mm adapter converts the native 3.5mm plug for quarter-inch jacks found on audio interfaces, mixers and amplifiers.

Check your source jack size and impedance match

Verify that your playback device offers a 3.5mm or 6.3mm headphone output before ordering. The 32Ω load suits most portable players, interfaces and headphone amplifiers. Buyers who need wireless connectivity, active noise cancellation or a detachable cable should consider other models.

Highlights

  • Closed-back design blocks outside sound
  • 40 mm drivers cover 20–20 000 Hz range
  • 32 Ω impedance suits portable and studio gear
  • 105 dB sensitivity delivers loud, clear output
  • 6 ft cable with in-line volume and 3.5 mm / 6.3 mm plugs

Specifications

BrandNADY
ModelQH-200
TypeOthers
Shipping weight0.91 kg
Package size197 × 171 × 95 mm

Questions about this item

Do the 40 mm drivers need any routine maintenance?

The drivers are sealed inside the closed-back cups and have no user-serviceable parts; only the ear pads and headband padding may wear over time and can be replaced if they deteriorate.

What limits how loud the headphones can play continuously at 105 dB/mW sensitivity and 32 Ω impedance?

The 32 Ω impedance and 105 dB/mW sensitivity mean most portable sources can drive them loudly, so the practical ceiling is the source device's maximum clean output voltage rather than the headphones themselves.

How much heat builds up on the ear cups after all-day use?

Passive closed-back design relies on the 40 mm drivers and thick on-ear cushions, which trap minimal heat; the cups stay near room temperature during extended sessions.

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