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Can be pre-ordered. Delivery expected in October.
Full-Range Planar IEMs
Solo redefines the meaning of “full-range sound” in high-end portable audio, covering the entire sound spectrum with a single planar driver. The last note in our legendary tia™ -Series of UIEMs has been developed over many years.
True to the technically groundbreaking legacy of Fourté, Trio and Duo, we have historically sought innovative solutions to the modern challenge of tuning a single driver. In addition to a conventional electronic filter that subtly shifts the tonal balance, we employ a dual Helmholtz resonator for precise sound adjustments.
sound
The agile performance expected from a planar driver achieves maximum realism by extracting subtle details in the music. These transients emerge from the mix and keep pace seamlessly with your focus on the primary elements of the song.
Our acoustic notch filters are strategically placed to eliminate harshness without compromising the performance of the driver. The Apex core supports the high mids and high frequencies in creating a huge soundscape, even in very complex mixes.
Alongside this realism comes a tactile immersion in the textures of the instruments and even the sonic characteristics of the recording equipment used in your favorite tracks. By carefully shaping the overall reproduction of Solo, we achieve bass with significant impact and deep sub-bass presence.
The 14.2mm planar driver's acoustic chamber incorporates two Helmholtz resonators that have been carefully tuned to acoustically shape the frequency response. This chamber also features our Apex Core design that expertly relieves air pressure and enhances the sense of physical space to a degree never before achieved in a single-driver IEM.
Combined with our patented LID technology, all of these innovations are included in our most striking design update since Fourté was introduced in 2016. These elements combine to produce a sound that is quintessentially 64 Audio, combining the exceptionally detailed transient response of planar technology with an unexpectedly robust low-frequency presence.
Copper 8x cable
Solo is paired with our first pure copper cable. The 23 x 25 AWG OCC copper cable is constructed in eight braids with a pleasant feel and an impressively low impedance of 0.26Ω. Solo comes standard with two of these cables, a 3.5mm single-ended cable and a 4.4mm balanced cable.
Outstanding technology
While planar magnet technology has been present in portable hi-fi equipment for many years, we wanted to really bring out its potential in our products. To offer a new perspective on this technology, we needed a combination of a slight but broad reduction in high frequency amplitude and attenuation of some very narrow frequency bands.
Since the electronic filter acts as a very subtle reductive regulator, we had to think creatively to effectively control some problematic frequencies. To do this, we drew on our years of research into Helmholtz resonators, an acoustic device dating back to the mid-19th century.
The two micro-resonators 3D printed in Solo's sound chamber work by pushing air in and out, causing the air inside to resonate at a specific frequency. By precisely determining the dimensions of the cavity and its throat, we can target a very narrow resonant frequency to amplify or reduce.
The planar magnetic driver features a flat diaphragm with embedded conductors suspended between two sets of magnets, unlike traditional dynamic drivers that use a conical diaphragm driven by a voice coil.
Because the entire diaphragm moves uniformly due to the planar magnetic field, we can deliver the detail and micro-transient information that would normally require a dedicated high frequency driver.
Because the diaphragm is not driven by a voice coil attached to a cone, which can cause uneven movement, we can reliably produce true, high-resolution, full-range sound with this single driver.
Patented technology
Tubeless in-ear audio is a patented IEM design methodology that aims to reduce unwanted resonances and distortion to achieve a transparent and lifelike sound signature. The tia system consists of three main elements: open, balanced tia drivers, the tia single-bore design, and tia acoustic chambers. Solo features two main elements of the tia system: the single-bore design and micro-acoustic chambers.
As another innovation, we use our patented pressure-relieving technology in the form of the Apex Core, taking this design to a new level of fidelity and spatial clarity. Because the Solo's acoustic chamber contains our integrated Apex Core technology, we achieve a similar fit and comfort to the Duo. The design provides just enough isolation to allow the listener to focus on the sound, while feeling so unobstructed that you might initially wonder if the seal is properly in place. This ensures hours of listening pleasure, made possible by our patented technology.
Linear Impedance Design (LID) is a patented circuit that compensates for the non-linear electrical resistance introduced by Solo's electronic filter. Variations in the output impedance of the source amplifier in devices such as smartphones, bodypacks, DAC/amps and DAPs typically result in changes in frequency response. LID restores proper interaction with the source, preserving the intended sound signature and ensuring consistent, reliable performance.
Technical data
- Color Black
- material T6060 aluminum housing, copper front panel
- Driver configuration 14.2 mm planar magnet
- insulation -12dB
- Frequency response 20Hz – 20kHz
- Cable OCC copper, 25 AWG + 23 wires, 0.26 Ω
- sensitivity 100 dB/mW at 1 kHz
- Impedance 16Ω
Included in delivery
- Solo Universal In-Ear Monitors
- Carrying bag
- TrueFidelity Foam Eartips (S, M, L)
- SpinFit Silicone Earplugs (S, M, L)
- Silicone earplugs (S, M, L)
- 3.5mm copper 8-strand braid
- 4.4 mm copper eight-strand braid
- Shirt clip
- Cleaning tool
- Cleaning cloth
- Round sticker
