One’s first – and enduring – impression is of an overwhelming, three-dimensional audio experience that can fairly be described as a virtual live event. The proprietary 16 mm Celsus Sound transducer produces a sense of space, depth, detail and dynamic as impressive as that of an audiophile’s dream sound system. A mesmerizing midrange and dynamic bass are among the more impressive of the Celsus Gramo One’s signature qualities. And no IEM we’ve ever heard can match the Gramo One’s production of seductive vocal textures.
The term reference-grade typically connects with a few widely celebrated over-ear and on-ear headphones. Their drawback – and it’s a serious one – is weight and size as principal contributors to listener fatigue. In recent years, a few in-ear headphones (IEM) have achieved reference-class status. Again, as a drawback, IEM devices suffer from an ultimately fatiguing “music-in-the-middle-of-one’s-head” phenomenon along with the excessive ear pressure that inevitably accompanies prolonged listening. With the portability of an IEM, the Celsus Gramo One’s exceptional sound quality equals or betters the most highly regarded over-ear headphones.
The following features of the Gramo One contribute to its superior sound: As with high-end speakers, the driver is mounted with damping materials to effectively absorb vibrations. With the same purpose in mind, damping materials also line the unit's interior. Sophisticated acoustic design and the Gramo One’s horn-type design together create especially vivid vocal reproduction and a wide sound stage.
*Open-back earbud is specifically designed for use in quiet environment
- A proprietary 16 mm Celsus Sound transducer produces a sense of space, depth, detail and dynamic as impressive as that of an audiophile’s dream sound system
- A mesmerizing midrange and dynamic bass
- Seductive vocal textures.
Included with Gramo One are:
- 3 pairs of ear tips
- Genuine Leather pouch
- Transducer principle: Dynamic Open
- Size of driver: 16 mm
- Impedance: 32 Ohms
- Frequency Response: 15 to 23000 Hz
- Sensitivity: 100 dB
- Sound pressure level (SPL): 125 dB
- Ear coupling: Intra-aural (ear buds)
- Connector: 3.5 mm
- Cable length: 1.20 m