ULTRASONE PANTHER: headphone amplifier with Hi-Res DAC that fits in every pocket

The PANTHER is the ideal companion for all headphones from our manufactory. High-end headphones like our Edition models can only play at their full potential with appropriately prepared material. This is where our PANTHER steps into the game: thanks to its high-quality D/A converter it offers the best sound in hi-res quality and provides sufficient amplification, too. With up to 20 hours of playback and compact dimensions, the PANTHER delivers high-end sound in pocket size, making it an audiophile upgrade for any source.


Marvellous sound on the go

Anyone who wants to enjoy high-quality sound on the go is faced with a problem: the converter units installed in mobile devices often become an annoying bottleneck for an audiophile sound experience. The PANTHER is a real help here: thanks to the AKM 4490 DAC chip, the PANTHER teases more quality out of any connected source. With up to 384 kHz and 32 bits of PCM resolution, the PANTHER is fully hi-res compatible and allows unadulterated and uncompressed sound in any situation. At the same time, the PANTHER purrs like a happy kitten in combination with its high-resolution DSD processing (up to DSD 256).

Compact, powerful and persistent

Despite its slim dimensions, the PANTHER not only accommodates a high-end DAC, but also comes with a powerful headphone amplifier. From 16 Ω to 300 Ω: the PANTHER drives almost any headphones. Thanks to its powerful 3.000mAh battery the it delivers audiophile amplification for many hours. By running the DAC, the it has enough endurance for up to 15 hours of continuous playback and for up to 20 hours via the integrated line-in input. With only 110g, the PANTHER never becomes a burden on the go.

Versatile in application

Smartphone, notebook or tablet: the PANTHER works with a large number of source devices and thus offers a real sound benefit for various situations. For this purpose, adapter cables for Lightning, USB-C, Micro-USB and USB-A connections are included in the box content. For maximum flexibility in headphones selection, the PANTHER features an unbalanced 3.5mm and a balanced 2.5mm headphone output as well as a gain switch.

Ultrasone NaosUltrasone NaosUltrasone Naos
  • Output Power : >350mW (PO/32Ω) >950mW (BAL/32Ω)
  • SNR: > 115dB (USB OTG) >101dB (Line-In)
  • Sampling rate: 32 kHz-384 kHz/32bit
  • Supported DSD: DSD64/128/256
  • Adaptive impedance: 16Ω - 300Ω
  • Battery Capacity: 3000mAh
  • Battery Lasting time: >15h (USB OTG) >20h (Line-In)
  • Charging time: 3-4 hours
  • Product dimensions: 115,6mm x 55,6mm x 12mm
  • Weight: 110g
  • Inputs: 1x Micro USB OTG, 1x 3.5mm Line-In, 1x Micro USB Charging Port
  • Outputs: 1x 3.5mm unbalanced, 1x 2.5mm balanced
  • DAC chip: AKM 4490

*On some rare occasions OTG capable Android phones may not work with Panther. This is due to the individual software programming of each Mobile phone manufacturer. This might happen to Android phones first time introduced by end of 2015 or earlier. One solution for this issue  might  be loading a 3rd party Player (e.g. USB audio……..) this might help to run music on the Panther.

  • Included cables:
    • 3x 8cm Micro USB input cable (lightning/USB-C/Micro USB)
    • 1x 30cm Micro USB cable to USB-A (for laptop use and charging)
    • 1x 10cm AUX cable 3.5mm jacks


at a price of 399,00 € incl. 19% VAT plus shipping costs

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Ultra-compact converter for on the go

NAOS is ULTRASONE’s extraordinarily compact high-quality converter and amplifier for smartphones, tablets and notebooks.
Have you ever been irritated because you were unable to experience your favourite music on your smartphone in the sound quality you wanted? With NAOS, ULTRASONE is ending this annoyance. The conversion and amplification of headphone signals will no longer be undertaken by components in smartphones and tablets, which are often very cheap, but instead by a high-quality device: NAOS. When used with award-winning ULTRASONE headphones, it gives you the excellent sound you expect, even when mobile.

Good sound really can be this compact
NAOS’s dimensions are extraordinary: 46 millimetres long, 18 millimetres wide and 6 millimetres deep – smaller than a match box! Weighing just 6 grams, NAOS is hardly noticeable. In contrast, its audio properties make it clearly noticeable, as it combines a high-quality digital to analogue converter with a headphone amplifier of the best possible quality and turns mobile music consumption into a special treat.

Hi-res in your pocket
The DAC in the NAOS allows source material to be converted up to a resolution of 192 kHz and a word width of 24 bits. In this way, not only do MP3 files and uncompressed signals in CD-quality benefit from the NAOS’s precise conversion, but high-resolution streaming services can also be played in all of their glory. The NAOS enables lossless enjoyment and studio-quality music on a smartphone.

High-performance amplification
After conversion, the now-analogue signal runs through a high-performance amplifier that is optimised for operation with a wide range of headphones. Whether a circumaural full-size model or small in-ear headphones, the NAOS will produce an optimal signal at the 3.5mm jack output. A headphone amplifier with the weight of a credit card! Of course, the NAOS can also be used with active speakers or upstream from a power amplifier, to use the high-quality converted signal as a source for speaker playback.

Connected to everything
In addition to the sound quality of its components, NAOS will also impress with its extensive connectivity. Whether mobile or stationary, NAOS works with smartphones, tablets, notebooks and desktop computers. To this end, it comes with cables for micro USB, USB C, Lightning and USB A. NAOS uses the connection not only to transfer data, but the compact DAC also draws its power using the same cable, so no additional power supply is necessary. NAOS works with iOS, Mac OS, Android (USB OTG function) and Windows (driver installation). Laptop, smartphone, desktop PC or tablet – NAOS is always a match.

Protective transport
NAOS and the corresponding cables for micro-USB, USB-A, USB-C and Lightning connections can be stored together in the elegant carrying case. This way, nothing gets lost and both the converter and accessories are always close at hand.

Ultrasone NaosUltrasone NaosUltrasone Naos
  • Compatibility: Smartphone (iOS, Android), Tablet, Notebook/Computer (Mac OS, Windows)
  • Dimensions: 46 mm x 18 mm x 6 mm
  • Audio Input: Micro USB
  • Headphone Output: 3,5 mm Stereo TRS
  • Frequency Range: 10 Hz - 30 kHz
  • Drive ability: 16 - 300 ohm
  • Sample Rate (USB Decoding): max. 192 kHz /24 bit
  • Out Power 1: > 90 mW (16 ohm / 3.3 V input voltage)
  • Out Power 2: > 200 mW (16 ohm / 5 V input voltage)
  • Out Power 3: > 40 mW (32 ohm / 3.3 V input voltage)
  • Out Power 4: > 100 mW (32 ohm / 5 V input voltage)
  • THD+N: < 0.01% (1 kHz)
  • Output Impredance: 0.73 ohm
  • SNR: 110 dB (3.3 V input voltage)
  • Status LED: Green
  • Max. Output Voltage: 2.6 Vp-p
  • Max. Output Current: 52.7mA (16 ohm/ 1 kHz)
  • DAC Chip: AKM AK4430
  • weight: 6 g

*On some rare occasions OTG capable Android phones may not work with NAOS. This is due to the individual software programming of each Mobile phone manufacturer. This might happen to Android phones first time introduced by end of 2015 or earlier. One solution for this issue  might  be loading a 3rd party Player (e.g. USB audio……..) this might help to run music on the NAOS.

  • Included adapter cables: Micro-USB, Lightning, USB (Typ A), USB-C
  • Travel kit

Here you could download the suitable NAOS driver for Windows PCs (only necessary for Windows 7 PCs) : https://goo.gl/bzWHh4

*On some rare occasions OTG capable Android phones may not work with NAOS. This is due to the individual software programming of each Mobile phone manufacturer. This might happen to Android phones first time introduced by end of 2015 or earlier. One solution for this issue  might  be loading a 3rd party Player (e.g. USB audio……..) this might help to run music on the NAOS.

"A well-made product in every respect, which you immediately want to have right away once you`ve used it."

Stereoplay.de - December 2017

"For 169 EUR you get „acoustic dope“, completely legal and over the counter, from Upper Bavaria. The ultra-compact Ultrasone Naos 24-Bit/192 kHz-DAC  has a form of a USB stick and impresses by the numerous application possibilities."

Area DVD - January 08th, 2018

"As I mentioned in this test, I'm really impressed with the performance of this ultra-compact D/A converter. The sound improvement is clearly audible even to the untrained ear, especially when playing songs alternately with and without NAOS".

- aptgetupdate.de February 12, 2018

"Tiny, extremely practical mobile Hi-Res-DAC, big in sound with only a few weaknesses, excellently crafted and with lots of accessories."

- Martin Woger, eurogamer.de - 19.02.2018

"In the test with Spotify raw material the DAC audibly promotes more details and an overall more vivid sound to the daily list, which would otherwise have been withheld by our mobile phones and headphones."

- SFT 04/2018

"In fact, the tiny Ultrasone NAOS DAC can convince us with its sound. The quality of the musical pieces increases, especially the tweeter and midrange area gains in attention to detail and clear substance. Instruments are placed exactly in the tonal structure, voices have the necessary seriousness in their expression and also the low frequency range profits from the small DAC dwarf".

- Hifi Journal 30 May 2018

"In the test with streamed songs, the DAC audibly brings more details and a more complex sound to the surface - the bidding is astounding in view of the size."

- SFT 08/2018


Order the ULTRASONE NAOS DAC/Amplifier

at a price of 169,00 € incl. 19% VAT plus shipping costs

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The Performance series goes wireless

SIRIUS combines the excellent sound quality of the ULTRASONE Performance series with the wireless convenience and flawless sound transmission of aptX® Bluetooth.

Sound, unleashed
Our Performance series enjoys an excellent reputation in the headphones market. The desire for a wireless model led us to an innovative new development: SIRIUS. Instead of enhancing the Performance series with just one new model with Bluetooth technology, we have developed a module that turns every set of headphones in the Performance series into Bluetooth headphones. Simple remove the cable from your Performance – and attach the SIRIUS instead. And just like that, you can enjoy your music via Bluetooth aptX® with full freedom of movement.

Perfectly matched
SIRIUS is designed to fit Performance series headphones exactly. Its strongly curved shape follows the design of the headphones and thus clings precisely to their housing. You won’t be able to tell that a SIRIUS module is docked onto the headphones. One of the reasons it is so inconspicuous is its extremely low weight: SIRIUS weighs just 12 grams – so Performance headphones remain as comfortable to wear as ever.

Wireless with optimum sound
The Performance series’ sound quality is undisputed. High-quality drivers and S-Logic® technology ensure perfect sound transmission. SIRIUS makes no compromises, and uses the aptX® Bluetooth codec for highest quality, lossless audio streaming. Every model in the Performance series can be converted into a set of premium Bluetooth headphones using SIRIUS – but it is still possible to switch back to wired transmission at any time, for example for use with devices that are not Bluetooth enabled.

Perfectly amplified
In addition to its function as a Bluetooth receiver, SIRIUS also integrates a headphone amplifier into its compact housing. This not only ensures that Performance headphones always have enough power; the specially adapted amplifier also provides the drivers with the perfect signal for an exciting musical experience.

Music headphones and headset
SIRIUS has three buttons for operations. Two of them are for adjusting volume, while the third button can be used to play and pause playback. The integrated microphone even enables use of Performance headphones as a headset for making calls with a smartphone or tablet, or for wireless communication when gaming. Thanks to the high-performance battery, SIRIUS can be operated continuously for up to 12 hours.

Ultrasone SiriusUltrasone SiriusUltrasone Sirius
  • Compatibility: Ultrasone Performance 820, 840, 860, 880
  • Technology: Bluetooth 4.1, aptX®
  • Bluetooth Profile: HFP, A2DP, HSP, AVRCP
  • Battery lifetime: 8 to 12 hours
  • Standby: 160 hours
  • Charging time: 1 hour
  • Max. Bluetooth transmission distance: 20 m
  • Buttons: Play/Pause, Volume
  • Weight: 12 g

The Declaration of Conformity in our download area.

  • USB charging cable

Order the ULTRASONE SIRIUS Bluetooth adapter

at a price of 139,00 € incl. 19% VAT plus shipping costs

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