The Shure SRH1840 has been enticing ears since it was first brought to the market.
'What HiFI' gave it 5 stars out of 5.
Steve Guttenberg of CNET had this to say,
"The sound is beautifully balanced from the deepest bass to the highest treble, and its minimal distortion will surely win the approval of any audiophile willing to make the investment."
Dale Thorn of Stereophile had this to say,
"The Shure 1840 continues to be my favorite headphone. A few weeks go I gave away my Sennheiser HD-800 after 2-1/2 years of very little use. The HD-800 had a slight advantage in harmonic details and bass strength, but that was overshadowed by excess brightness. This past week I gave away my Grado PS-500, Shure SRH-940 and German Maestro 8.35D, all of which were fine headphones except for irregularities and excess output between 2 and 10 khz. While the SRH-1840 is probably not perfect and would not likely please bass-philes, the sound is so smooth, clear, detailed, and lacking in irritations, that I can feel confident about getting maximum use out of it for the next few years no matter what new designs come along. Highly recommended."
The transparency of the Shure SRH1840 is of the highest caliber. When you're in these leagues you really just have to strap one one. This is a phenomenal headphone.
Individually matched 40 mm neodymium drivers for unparalleled acoustic performance with smooth, extended highs and accurate bass
Open-back, circumaural design for exceptionally natural sound, wide stereo image, and increased depth of field
Lightweight construction featuring aircraft-grade aluminum alloy yoke and stainless steel grilles for enhanced durability
Steel driver frame with vented center pole piece improves linearity and eliminates internal resonance for consistent performance at all listening levels
Ergonomic dual-frame, padded headband is lightweight and fully adjustable for hours of listening comfort
Optimized for connection to external headphone amplification systems
Oxygen-free copper cable with Kevlar® reinforced jacket for superior performance and durability
Dual-exit cables with gold-plated MMCX connectors provide secure connection and detachability for easy storage or replacement
Replaceable velour ear pads with high-density, slow-recovery foam for exceptional comfort
Individually tested and serialized
Legendary Shure durability to withstand the rigors of everyday use