Special Edition headphones Grado Labs founder Joseph Grado created what many consider to be the high-end headphone market with the release of the Signature HP1 headphone in the early 1990s. In recognition of Joseph Grado’s 100th birthday and this industry milestone, we are introducing the HP100 SE headphones. Past and present While the HP100 SE pays homage to Grado’s illustrious past, these headphones are a contemporary version of a true classic, with a new design from the ground up. With newly engineered drivers, the HP100 SE also boasts detachable cables, as well as a fresh headband assembly. New speaker design At the heart of the HP100 SE is a completely new 52mm speaker design. A new paper composite cone has been chosen, alongside a powerful high flux magnetic circuit using rare earth alloys, and a new voice coil made from lightweight copper-plated aluminium. This new magnetic circuit coupled with the voice coil produces excellent dynamics and transient response, along with a highly refined sense of space, soundstage and image. Modern housing Honouring the recognizable heritage of the original Signature HP1/2/3 headphone designs but with a modern feel, the housings are individually machined from specially treated aluminium with the product name neatly engraved on the face. New look cables The HP100 SE is the first Grado model to feature detachable cables. It has been engineered to a softer but durable braided finish, with cable insulation that improves flexibility and decreases the overall weight of the cable. Terminated with a 6.3mm plug, it connects to each housing via a 4pin mini XLR plug. Headband assembly redesign The HP100 SE’s headband assembly has changed from the classic Grado models. Designed for comfort during long listening sessions, the new headband features 50% more padding than previous Grado designs, with a stainless steel band and height rods that can be adjusted for the perfect fit to minimize listening fatigue. April 2025 “…perfect for those audiophiles wanting reference-quality dynamic open-back headphones… A high-quality and well-made headphone that will certainly be at home in any high-end system.” Hi-Fi Choice, 5 Stars, Editor’s Choice Award Specification : Transducer Type: Dynamic Operating Principle: Open Air Frequency response: 3.5 Hz – 51.5 kHz THD: <0.1% @100 dB SPL 1mW: 117 dB Nominal impedance: 38 ohms Driver size: 52 mm Driver Matched dB: 0.4 dB Cable type: 12-conductor detachable Headphone Connection: 4pin Mini XLR Source Connection: 6.3 mm Earpad type: G-cushions In the Box Headphones 6 foot 6.3 mm terminated headphone cable Warranty
