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Black circumaural headphones with adjustable headband and single cable exit

Superlux

Superlux HD681 EVO Headphone 32 Ohm Black

SKU CH-9AW9-PPQ09 MPN HD681

Circumaural 32 ohm stereo headphones with adjustable headband, two straight cables and a gold-coated 3.5 mm to 6.3 mm adapter

  • TypeHeadphone
  • ColorBlack
  • Input Impedance32 ohms
  • ConnectorMini-phone
  • Ear CouplingOver-the-head
  • Rich bass and clear highs for accurate monitoring
  • 32 ohm impedance suits portable and studio gear
  • Includes 1 m and 3 m cables plus 3.5 to 6.3 mm adapter
  • Adjustable headband and circumaural cups for long sessions
  • Lightweight 9.35 oz design with single-side cord exit

Professional Monitoring Headphones

The Superlux HD681 EVO is a wired circumaural headphone designed for accurate audio monitoring. It features a 32 ohm impedance and stereo sound mode with a single-sided cable exit. The adjustable headband and over-the-head earpiece design suit extended studio or stage sessions.

Who This Suits and Who It Does Not

Audio engineers and musicians needing neutral treble response and reliable sound-field positioning will benefit from this model. Buyers who want wireless connectivity or active noise cancellation should look elsewhere. The package includes 1 m and 3 m straight cables, a gold-coated 3.5 mm to 6.3 mm adapter, a cable clip and a soft carrying pouch.

Deciding Specification

The 32 ohm input impedance determines compatibility with portable interfaces, laptop outputs and professional headphone amplifiers alike. This single figure tells you whether the headphone will reach adequate volume without an additional amp stage.

Highlights

  • Rich bass and clear highs for accurate monitoring
  • 32 ohm impedance suits portable and studio gear
  • Includes 1 m and 3 m cables plus 3.5 to 6.3 mm adapter
  • Adjustable headband and circumaural cups for long sessions
  • Lightweight 9.35 oz design with single-side cord exit

Specifications

BrandSuperlux
ModelHD681 EVO
TypeHeadphone
ColorBlack
Input Impedance32 ohms
ConnectorMini-phone
Ear CouplingOver-the-head

Questions about this item

Does the 3.5 mm plug fit a standard phone jack?

Yes, the cable terminates in a 3.5 mm mini-phone connector that plugs directly into any standard 3.5 mm stereo jack.

How do I attach the 6.3 mm adapter without damaging the threads?

Screw the gold-coated 3.5 mm to 6.3 mm adapter onto the plug by hand until snug; over-tightening with tools can strip the soft metal threads.

When should I replace the ear pads on these circumaural cups?

Replace the pads when the foam loses resilience or the covering cracks, typically after heavy daily use; the pads are removable for easy swap-out.

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