One pair of DALI CALLISTO 2 C Wireless (EQUI system) Class D Active Speakers with Grilles in Black finish. Superb condition excepting one tiny mark to the rear of one of the speakers and the usual stand mount marks on the bottom of each (these CALLISTO 2C were briefly bolted to the dedicated DALI M-601 Connect stands - these have specific channels so the bolts do not enter the cabinets). Superbly specified and sound incredible - 6.5” wood fibre cone woofer with patented SMC pole-piece, 29mm soft-dome and 17 x 45mm ribbon tweeters; DALI Class D amplification with Burr Brown PCM1796 DAC, configurable up to 7.1 surround with other EQUI products, Hi-Res 24-bit/96kHz wireless transmission over proprietary EQUI protocol. Use with the DALI Sound Hub Compact or DALI Sound Hub products for flexible connectivity including Digital Coaxial and TOSLINK, analogue RCA, Bluetooth, HDMI, BluOS streaming, AirPlay 2, etc. Can also be used standalone using their ADC RCA connectors for a preamp, DAC, etc. RRP £1999 when new. These were purchased as part of a 7.1 HDMI system that never came to pass - they saw brief usage in a multi room system and then were put in storage. Original boxes, albeit from my white CALLISTO 2 Cs (which I use as my main 2.0 music system). Sensible offers welcomed - these are high-end EQUI wireless speakers at OPTICON 2 Mk. 2 prices! International delivery is available through the Global Shopping Programme but please bear in mind that these speakers are very heavy at ~21kg the pair before packaging.

DALI CALLISTO 2 C Wireless Powered SpeakersPerfect for smaller spaces or rooms where the speakers need to remain discreet, but where power and presence are still paramount. The combination of a 6½-inch low-loss wood fibre woofer, a hybrid tweeter module and the perfectly balanced internal cabinet volume results in a supremely accurate and powerful audio experience. Connects wirelessly to the DALI Sound Hub through an extremely stable digital connection. With latency below 25 ms, sync between video and audio from a movie or TV source is obtained well within conventionally acceptable limits.Everything from the drivers to the amplifier is developed in-house, which is why we can optimise every single component to match each other perfectly. This enables us to design the woofers to be more linear than would be possible in a similar traditional passive speaker system.The CALLISTO 2 C connects wirelessly to the DALI Sound Hub (https://www.ebay.com/itm/233686150843) through an extremely stable digital connection. With latency below 25 ms, sync between video and audio from a movie or TV source is obtained well within conventionally acceptable limits.The DALI CALLISTO speakers are MQA Certified. By adding the DALI BluOS NPM-1 module to your system, you can now take advantage of the ever-growing catalogue of studio master recordings that have been encoded into MQA and streamed on services like Tidal.HYBRID TWEETERLike its larger sibling, the CALLISTO 2 C features DALI’s innovative hybrid tweeter module, which was optimised specifically for the CALLISTO series. Combining a dome and ribbon tweeter for astonishing rendering of high frequencies, and a dispersion of high frequency audio that outperforms all other tweeter technologies.The dome membrane is very soft and ultra-lightweight, and actually so thin that a coating has to be applied to hold the material together and be uniform in construction. We have optimised the magnet system to maximize flux saturation right at the voice coil area. This optimisation combined with the use of an ultra-thin magnetic fluid for cooling results in better control, power handling and greatly limits distortion.The ribbon part of the hybrid module is a magneto-static type tweeter. Four bands of conductive material make up the active diaphragm that is controlled by a strong magnetic field formed around it. The ribbon tweeter is the master of wide dispersion, and combining it with the soft dome, we get a tweeter module that can be utilised as low as 2.0 KHz and continues to perform well above 30 KHz. This extreme bandwidth combined with the ultra wide dispersion is an important part of the DALI sonic definition.AMPLIFIERDesigning a ‘best in class’ active speaker system is the sum of many parts. One truly important part is the amplifier, or more correctly the amplifier module. Any quality amplifier module consists of three equally important parts that need to be designed to work together in perfect harmony: the amplifier itself, the PSU and the signal processing. The delivery from the signal processing and the PSU to the amplifier circuitry must adhere precisely to the amplifiers needs and demands. Only in this way can you achieve an undistorted, uncoloured and coherent amplification.The CALLISTO 2 C Class D amplifier is based on patented state-of-the-art technology with a global feedback and self-oscillating design chosen for its very musical properties. Being able to deliver 250 Watts for up to 5 seconds, there is plenty of power to ensure more than enough sound pressure even in complex musical passages or massive explosions in movies.Product seriesCALLISTO CFrequency Range (+/-3 dB)47 - 30,000Maximum SPL108Crossover Frequency2,700Crossover PrincipleHybrid Full Active 24 bit DSP and Passive All AnalogueHybrid tweeter module, Super high freq. driver, Quantity1 x 17 x 45 mmHybrid tweeter module, Super high freq. driver, Diaphragm typeRibbonHybrid tweeter module, High frequency driver, Quantity1 x 29 mmHybrid tweeter module, High frequency driver Diaphragm typeSoft Textile DomeLow frequency driver, Quantity1 X 6½Low frequency driver, Diaphragm typeWood Fibre ConeEnclosure typeBass ReflexBass Reflex Tuning Frequency46.0Max. Amplifier Power Output250Amplifier TypeDiscrete Class D (Closed Loop, Self Oscillating)Onboard DACBurr Brown PCM1796 (Balanced output)Input Impedance5,000Connection InputADC-in (RCA)Wireless Input(s)Full 24 Bit / 96 kHz (No bit-loss attenuated)Wireless Audio RF Band5725-5875 MHzMax. Digital Resolution24 / 96Magnetic ShieldingNoRecommended PlacementShelf or standRecommended Distance From Wall10 - 80Max. Power Consumption325Standby Power Consumption1.2Dimensions With Base (HxWxD)393 x 200 x 321Accessories IncludedManual Rubber Feet Front GrilleWeight10.1Input Sensitivity1,700Input Mains Voltage100 - 240 (Universal mains

DALI Sound Hub EQUI Wireless Audio Preamplifier for Oberon C/Callisto C/Rubicon C DALI EQUI wireless speakers (including Oberon Vokal C and On-Wall C). Opened only to check and test, so in as new condition - polythene still present on the Hub top and on the wireless remote control. RRP £519.