Signature Series

Grado HP1000 Headphones

Transducer type:

Dynamic

Operating principle:

Open Air

Frequency response:

?

SPL 1mW:

?

Nominal impedance:

40 ohms

Driver Matched dB:

±0.05

Ear pads:

G Cushions (Large Pads)

Grado HP1000 Headphones

The Grado HP1000 series, designed by Joseph Grado in the late 1980s, represents the first headphones produced by Grado Labs. Known for their precise engineering, exceptional build quality, and neutral sound signature, the HP1000 models were aimed at professional audiophiles and studio engineers. The series included three variants: HP1, HP2, and HP3, with slight differences in features and tuning. These headphones have since become legendary for their sonic accuracy and robust design, earning a cult following in the audio community.

Facts

History and Trivia

Build Quality and Design

Sound Description

Modding Potential

The HP1000 series was introduced in the late 1980s, marking Joseph Grado’s entry into the headphone market. Initially designed for professional use, these headphones prioritized sonic neutrality and build precision over mass-market appeal.

The HP1 featured polarity switches, allowing users to reverse the signal phase—a unique feature aimed at studio professionals.
The HP2 was identical in design but omitted the polarity switches, catering to a more straightforward use case.
The HP3, the rarest of the three, was an early production run with slight tuning and build inconsistencies, often referred to as a "prototype-like" variant.

Joseph Grado’s attention to detail extended to the materials used, including machined aluminum housings and carefully matched drivers. These headphones were entirely handcrafted in Brooklyn, New York, emphasizing Grado’s commitment to quality.

The HP1000 series is renowned for its robust construction, featuring aluminum housings and a durable metal headband. The headphones have a retro, industrial aesthetic that reflects their professional focus.

Materials: Machined aluminum housings with a brushed finish.
Headband: Metal band wrapped in leather for durability and comfort.
Cables: Thick, fixed cable with a 1/4-inch jack, known for its reliability but criticized for its stiffness.

Despite their solid build, the HP1000 series remains relatively lightweight, making them comfortable for extended sessions, though the headband could exert some clamping force.

The HP1000 series is celebrated for its exceptionally neutral and accurate sound signature. Designed for critical listening, these headphones deliver unparalleled detail and transparency.

Bass: Tight and controlled, with no unnecessary emphasis.
Mids: Extremely linear and natural, making vocals and instruments shine with clarity.
Treble: Smooth and detailed, avoiding the harshness often associated with analytical headphones.
Soundstage: Intimate but precise, with excellent imaging and separation.

The HP1000 headphones are ideal for those seeking a reference-grade listening experience.

Due to their rarity and historical significance, modding HP1000 headphones is generally discouraged by collectors. However, some owners have replaced the original ear pads with modern options to improve comfort without altering the sound signature.

Common Mods:
- Replacement ear pads (typically flat or bowl pads).
- Re-cabling for flexibility and modern connections, though this is controversial among purists.

Collectibility and Reception

The HP1000 series has achieved legendary status among audiophiles and collectors, with prices on the second-hand market often exceeding $2,000 for well-maintained units.

Community Reception: Praised for their unmatched neutrality and build quality, the HP1000 headphones are considered a benchmark in the audiophile world. However, their clinical sound signature may not appeal to those seeking a more "fun" or colored listening experience.
Rarity: The HP1 and HP2 are relatively scarce, while the HP3 is exceedingly rare, often fetching premium prices due to its unique place in Grado’s history.

The HP1000 series remains a cornerstone of Grado’s legacy, embodying Joseph Grado’s vision of uncompromising audio quality. Their timeless design and performance continue to captivate audiophiles, solidifying their place as one of the most respected headphones in the history of high-fidelity audio.