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24bit 384kS/s, USB DAC, SPDIF DAC, and USB to SPDIF Bridge.
HIGH DEFINITION 32bit USB DAC and SPDIF DAC. DSD and DXD (24b/352.8kS/s).
HEADPHONE AMPLIFIER from USB or SPDIF. DSD and DXD (24b/352.8kS/s).
CONCERO is a family of 352.8/384kS/S outstanding audio DACs. We have listened to customers and industry experts who asked us to deliver a sound signature similar to that of the INVICTA with fewer features and in a simplified format.
CONCERO is that product. It is the Asynchronous USB Audio 2.0 and Jitter Reduction elements of the INVICTA driving the latest ESS Sabre DACs.
CONCERO uses the 24bit ESS ES9023 Sabre DAC, CONCERO HD and CONCERO HP both use the 32bit ESS9018-2M Sabre DAC*. In addition, we have added an S/PDIF input for those configurations that do not use a USB data source.
The CONCERO (except HP version) also allows USB input to S/PDIF output in a bridge mode. 
The HD and HP versions accept PCM and also DSD from USB Audio 2.0 (in 64x or 128x modes, ie DSD64 and DSD128).
The HD version streams DoP data to the S/PDIF output when in DSD64 mode.
CONCERO ________________________________________________________________________
CONCERO is the upgradeable DSP engine of the INVICTA, including its proven Asynchronous USB Audio 2.0, Outstanding Jitter Reduction capability and the Proprietary Resonessence up-conversion filters delivering 176.4kS/s & 192kS/s from your 44.1kS/s & 48kS/s sources.
CONCERO supports USB up to 384kS/s.
CONCERO is designed to help you access Resonessence Audio Engineering capabilities while maintaining all your existing audio equipment.
CONCERO HD ________________________________________________________________________
CONCERO HD connects the Resonessence upgradable FPGA based DSP engine to the new 32bit ESS ES9018-2M Sabre DAC for high performance, high sample-rate PCM up to DXD rates (352.8kS/s) from the USB Audio 2.0 port. In addition, it also contains the Resonessence 4x up-sampling filters that will accept 44.1kS/s and 48kS/s data streams from USB or S/PDIF and convert them to 176.4kS/s and 192kS/s respectively.
CONCERO HD activates the ES9018-2M’s internal DSD processing engine to support Direct Stream Digital (DSD64 and DSD128) from the USB Audio 2.0 port using DoP standard version 1.1.
CONCERO HD can operate as a USB to S/PDIF bridge in all modes except the DSD128 mode (that more would result in an S/PDIF stream data rate that exceeds the S/PDIF specification. DSD64 however does work, DoP data packets are send out on the S/PDIF in that mode).

CONCERO HD is designed from the ground up to deliver on the promise of Direct Stream Digital in addition to high sample rate PCM. It brings the latest ESS Sabre DAC chips and the latest standards in audio processing to your existing power amplifier and loudspeaker configurations.
CONCERO HP ________________________________________________________________________
CONCERO HP is three things in one: first, it is the Resonessence upgradable FPGA DSP core with all the proven filters and algorithms of the CONCERO family; second, it uses the 32bit ES9018-2M Sabre DAC in both PCM and DSD modes to provide high quality audio; and finally it provides a state-of-the-art headphone driver capability.
The CONCERO HP delivers digital music directly from your computer USB or audio S/PDIF source to your chosen headphones with exceptionally low distortion (< 0.001%) and high dynamic range (> 112dB).
Similarly to all the CONCERO family, the CONCERO HP enumerates on the PC as a USB Audio 2.0 device (by use of our freely provided Thesycon USB Audio 2.0 driver), and natively on the Mac. But in addition, CONCERO HP also enumerates as a Human Interface Device  (HID) which allows its volume control to drive the volume level in the music player directly. (Learn more about the volume control)
When internal up-sampling is being used (taking your 44.1kS/s or 48kS/s to 176.4kS/s and 192kS/s) pressing the center of the volume control knob cycles through the Resonessence up-sampling filters for you to optimize your listening experience.
( These last two features mean that no remote control is necessary with the CONCERO HP, but if you prefer to use a remote control, CONCERO HP responds to the Apple IR Remote just like the other CONCERO family members.  )
( A configuration utility on both PC and MAC is provided to configure the CONCERO HP to use S/PDIF as either an input or as an output to enable S/PDIF bridge mode. This configuration utility is provided so that the CONCERO HP requires no remote control to access all the features. You can change the configuration as often as you like, the configuration you chose is stored in the CONCERO’s non-volatile memory chip. )
Important note: the volume level that you set on the CONCERO HP is stored in your music application. Both the PC and MAC have the feature that the last setting of the volume is restored when you use your CONCERO HP for a second or subsequent time. However, the very first time that you use the CONCERO HP, both Window’s and the MAC OS will initially set the volume to 0dB – ie to the maximum level. Take care therefore when first using the CONCERO HP that you have the headphones unplugged and set the volume to a lower level before listening. This initial volume level of 0dB may also apply if you use a different USB port for your CONCERO HP. Our engineers suggest that certain software music players may store a different volume level for each USB port.
CONCERO HP is designed to be the only audio device you need to take your library of digital music in whatever format you choose, to your high quality headphones. Laptop, CONCERO HP and quality headphones together make an outstanding audiophile system.
  • Plug CONCERO into an active USB port and CONCERO enumerates as an audio output device. Now you can use CONCERO with your favorite music player on the MAC or PC, and experience a new level of audio clarity. CONCERO will optionally up-sample your digital 44.1kS/s and 48kS/s provided over the USB, into both an analog output from its internal ESS Sabre DAC’s into your existing audio pre-amplifier inputs or to your headphones. CONCERO (not the HP version) is also capable of generating a 24 bit ultra low jitter SPDIF stream output.
  • If you prefer to provide your own data at higher than 48kS/s, all CONCERO models will render it bit-perfect into the DAC (and SPDIF stream if not HP) while providing exceptional jitter removal.
  • Plug CONCERO into a power-only USB port (of the type used to charge cell phones or similar), and finding no active host, CONCERO will configure to accept SPDIF input. Once again offering to up-sample 44.1kS/s and 48kS/s into high quality 176.4kS/s or 192kS/s, or render it bit-perfect and jitter reduced into to the internal Sabre DAC for your pre-amplifier inputs or headphones.

CONCERO models respond to the Apple IR Remote for you to conveniently control the USB host track selection and play/pause, and on-the-fly select the ideal internal filter to suite your taste.
No glitch or artifact is generated during filter switching, allowing you to audit the filters and choose the optimum. Pressing the volume control knob on the HP model also cycles through the filter selections.

*The CONCERO HD and CONCERO HP do indeed use the 32bit ESS9018-2M Sabre DAC but the data you send to our DACs is at most a 24bit word. What then is the reason to mention that the DAC is 32 bits? It is important, and it sounds better when the DAC is 32 bits, because of the signal processing the DAC must do can end up loosing information (ie making a very low level of noise) if the internal bus width cannot accommodate a dynamic range higher than the dynamic range of the input data word.
Update June 2013: the latest software for CONCERO enables 384kS/s mode! If you purchased a CONCERO at any time you can now upgrade your unit to 384kS/s. Check out the Software Updates for CONCERO page. We now provide both a PC and a MAC version of the CONCERO updater. Please note that the 384kS/s is the new highest rate that the CONCERO can take from your USB source (352.8kS/s is the highest rate CONCERO HP and CONCERO HD can take), the internal filters still up-sample by a factor of four to the 176.4kS/s or 192kS/s rates.
CONCERO is a USB Audio 2.0 DAC, USB to SPDIF bridge and SPDIF DAC. It operates at up to 192kS/s 24 bit audio and uses 32 bit internal signal processing. CONCERO is the digital and analog signal processing core of the INVICTA delivered to allow you to use all your existing audio purchases, and access Resonessence sound quality and digital up-sampling filters in your own system. The digital up-sampling filters will render your 44.1kS/s and 48kS/s audio into outstanding 192kS/s. Your 44.1kS/s and 48kS/s music never sounded so good.