Blue Cheese Audio (BCA) Rouqefort er en DAC/Digital forforstærker med integreret volumenkontrol. BCA Roquefort er udstyret med Anagrams Sonic2 opsampling teknologi, der arbejder asynkront og upsampler til 384 KHz. Der er desuden lagt megen omhu i seriøs clock som foregår ultra præcist, med ét pico sekunds nøjagtighed, samtidigt er der valgt et clockdesign som ikke støjer i audio pasbåndet. Støj i audio pasbåndet, er desværre en hyppig kilde til jitter, på selv meget præcise krystaller. Ved hjælp af den DSP baserede digitale volumenkontrol, undgås uønsket tab, af specielt mikrodynamik, ved attenuering. Signalet bevares intakt ved alle lydstyrker og belastes ikke af lavimpedante potmetre eller attenuatorer i signalvejen. Der lagt stor vægt på de analoge udgangstrins ydelse, igennem hele udviklingsfasen, da de bærer en stor del af ansvaret for det gode resultat. Der kan tilsluttes stort set hvad man kunne ønske sig af digitale kilder, nu og i fremtiden, via 2 stk. AES/EBU, 2 stk. S/PDIF, 1 stk. coaxial, 1 stk. Toslink og 1 stk. USB. Betjeningen af indgangsvælger og volumen foregår via én multifunktionsknap på fronten eller via medfølgende fjernbetjening. Der kan køres balanceret eller ubalanceret direkte videre til effekttrinene, da forforstærkeren er integreret i designet.

CD Player CDP-8 The CDP-8 CD Player once again demonstrates NuForce's redefinition of audio-playback standards and value. We conceived the CDP-8 for Red-Book CD playback exclusively in order to avoid the pitfalls and compromises to which so-called universal players are prone. In recent years, advances in technology have resulted in clearly audible refinements in CD playback. However, preferring to keep abreast of newer formats, most manufacturers have declined to put their best efforts into CD playback, preferring to assume - against all evidence -- that the compact disc is obsolete. We at NuForce emphatically disagree. Public and private music libraries consist in the main of compact discs. It doesn't take much insight to recognize that people with expensive CD collections are unlikely to replace them with other formats any time soon, even assuming that the vast array of CD titles will ever reappear in these other formats. Common sense tells us that collectors will much prefer to avail themselves of the advances in CD playback the NuForce CDP-8 exemplifies. What is it, then, that makes the CDP-8 better? For a start, our player employs a state-of-the-art optical drive system and powerful DSP-based decoder that fully implements Red Book error-correction capabilities. This feature alone offers a clear advantage over other strategies. Our custom-designed DSP directs the laser servo to correct errors, thus negating data corruption before it becomes an issue. Until now virtually all CD transports have been essentially "dumb" in that their optical drives lack the ability to recognize disk error, however minor. They simply output data, good and bad, until major problems appear. We have all experienced how scratched CDs can stutter and skip. Only when the transport encounters big-time errors does it attempt to detect the disc's playable areas. This approach embodies a dilemma: before the transport encounters and responds to significant errors, it passes along numerous smaller errors to the next stage, at which point an error-correction algorithm attempts to reconstruct the lost data Further complicating the process, the master-clock signal synchronizing the circuit has to be derived from the data stream as it's retrieved from the disk. The aforementioned small errors cause even greater problems by amplifying jitter throughout the digital-to-analog process. Is it any wonder that CDs have been largely unable to provide the level of playback quality they're capable of? Further, is it any wonder that many audiophiles shun the format to this very day? In contrast to other procedures, the CDP-8's transport, which runs at a single speed, includes a memory buffer that temporarily stores the disc's data. This procedure permits data re-clocking that the on-board Master-Clock resynchronizes. The laser servo's DSP control has significantly reduced jitter, further system-data synchronization is no longer dependant on the original data stream's accuracy. Jitter and its accompanying distortion have been reduced to a matter of little consequence. The CDP's novel and groundbreaking design concepts result in a level of playback that rivals or surpasses that of any other player on the market today. This holds true even when compared to the implementation of a computer as a CD drive/music server. Simply put, a computer cannot read a CD in its native format, thereby making it difficult -- and costly -- to recover CD data in the manner of a straightforward CD Player. The CDP-8's output provides the finishing masterstroke: a high-performance DAC and sophisticated analog output circuit process the final decoding. Finally, as an attractive ergonomic feature, a touch-sensitive strip controls the CDP-8's command functions, thus avoiding the need for mechanical switches or push buttons. The included remote coordinates volume and input functions with NuForce's P-9 Preamp and IA-7 Integrated amp. Compared to other CD-playback devices, the NuForce CDP-8 offers an unprecedented level of performance and value. Not only do we make your CD collection and the investment it represents viable for years to come, we do so at a most attractive price. Top-quality, affordable, dedicated CD playback from a no less dedicated company - now there's a concept whose time has arrived!

Specifications.

•Maximum output level: analog RCA, 2.7V

• S/PDIF output: RCA and BNC

• Frequency response: 20Hz-20kHz, @ +/- 0.3dB.

• Signal/noise ratio: >100dB.

• THD: 0.005% at 1kHz, 0dBFS

• Output impedance: 100 ohms

• Dimension: 8.5" x 14" x 1.8"

• Weight: 7

anmeldelse Stereophile:

www.stereophile.com/content/nuforce-cdp-8-cd-player

Digital Analog Converter DAC-9 Engineered to meet the needs of the most demanding audio purists while also providing the greatest degree of flexibility, the NuForce DAC-9 is a true reference-class digital-to-analog stereo converter, pre-amplifier and headphone amplifier in one supremely sophisticated package. As to versatility, with its six digital inputs, the DAC-9 offers compatibility with all existing digital formats. And, in keeping with NuForce’s commitment to its customers, plug-in USB module/interfaces will always provide for upgradeability to higher bit rates, thereby securing the end-user’s investment as digital technology continues to advance. The DAC-9 addresses the need for complexity on a foundation of remarkable simplicity. Minimal processing and the shortest possible signal paths set the DAC-9 apart. For example, when an input source is selected, a pair of high-performance DACs offer up to 24-bit/192kHz (24bit/96kHz for USB) conversion of digital audio data. Extensive testing and listening tell us that up-sampling and sample-rate conversion do more harm than good, as does negative feedback. Consequently, no form of sample-rate conversion is ever employed. Summing the output of two DACs increases the signal-to-noise ratio to near-theoretical limits wherein every musical nuance stands out in brilliant contrast to a background of utter silence. As a further enhancement, an innovative Passive IV Digital Output Filter assures lifelike musical reproduction. The DAC-9’s passive circuit employs no negative feedback of any kind, thus providing a ripple-free response wherein high-frequency phase coherence is always maintained. Beyond the DACs and digital filter, the converted signal passes on to the analog preamplifier stage, which also adheres minimalist design principles. Again, NuForce applies no negative feedback in order, among other good reasons, to avoid higher-order distortion artifacts that typically plague unnecessarily complicated designs. The quietest circuitry components and layouts, along with the shortest possible signal paths, likewise contribute to the DAC-9’s exemplary performance characteristics. As another pathway to a “straight-wire-with-gain” end, when the user selects Fixed-Mode Output, the digitally controlled, precision volume attenuator is bypassed via means of a precision mechanical relay. As impressive as these refinements are, the DAC-9 would not be nearly so successful without the clean, stable energy a shunt-regulated linear power supply provides. With its multiple regulation stages, the power supply allows the DAC-9’s digital and analog circuits to operate to their fullest potential, with the lowest noise and distortion possible. Nor has NuForce overlooked the needs of the dedicated headphone listener. The DAC-9 includes a fully independent, high-performance headphone stage with a dedicated volume control. The DAC-9’s 6.3mm and 3.5mm headphone jacks sidestep the inconvenience and potential distortion of external plug adaptors. The DAC-9’s exceptional value and versatility is exemplified by the unit’s remote control, which beyond its array of usual conveniences, operates other NuForce devices such as our P-9 Preamp and CDP-8 CD Player. Moreover, the DAC-9’s sleek touch panel and low-profile chassis make a visually attractive addition to the finest playback systems. NuForce strives, as always, to achieve superior performance by means of the purest and therefore simplest of design concepts. We’re confident that you will find the NuForce DAC-9 Digital-to-Analog Converter, Preamp and Headphone Amp to be the ideal answer to your listening requirements. Price notwithstanding, few competing products can compare to the DAC-9’s sonic excellence, simple elegance, and of course convenience. When one then takes into account the exceptional value the DAC-9 represents, we’re sure you'll agree it's in a class of its own.

Specifications •

6 digital inputs (USB, XLR AES/EBU, RCA Coaxial or BNC, RCA Coaxial, Toslink, 3.5mm Optical*):

• Transformer or optical isolated, AC coupled.

• Maximum bit depth: 24 bit

• Maximum S/PDIF sample rate: 192kHz

• Maximum USB sample rate: 44.1, 48, 96 kHz

• A small plugged-in USB module allows for future upgradeability to a higher-bit-rate USB interface card.

• Coaxial or BNC S/PDIF input: Only one of these inputs can be used when Input 3 is selected. To achieve optimum performance, we recommend a 75-ohm BNC cable (available from NuForce) with a BNC connector.

• On the front panel, a 3.5mm optical S/PDIF input.

• Outputs: XLR, RCA, 3.5mm and 6.3mm headphone output*.

• Output Impedance: RCA, 0.01 Ohm; XLR, 50 Ohm; Headphone, 10 Ohm

• Output voltage 0dB, 1kHz: RCA 2.0/4.0Vrms, XLR 4.0/8.0Vrms (Low output/High output versions, low output version has to be custom ordered)

• Headphone power spec.:

• 288mW rms @ 30 Ohm

• 210mW rms @ 120 Ohm

• 152mW rms @ 300 Ohm

• THD+N: 0.01, 0dB, 1kHz

• SNR: 103dB, 1kHz, A-weighted

• Frequency Response: 20-20kHz +/- 0.25dB

• The true-balanced XLR output produces twice the gain of the RCA output. The remote and front panel controls allow for fixed and variable voltages.

• Touch panel control

• Remote control: volume, input select, dim, mute

• Volume and sample rate display

• Power consumption: 9W

• AC voltage: 100V/110V/220V/230V

• Dimension: 215mm (w) x 400mm (d) x 60mm (h)

• Weight: 3.2Kg net, 4.5Kg shipped

• * The headphone output and optical input share the 3.5mm connector.

Anmeldelser:

www.lydogbilde.no/test/nuforce-dac-9

www.stereotimes.com/commRN070711.shtml

www.avtainment.dk/indsigtsartikler/hifi/anmeldelse-nuforce-dac9-534.html

Audiophile-Grade DAC and Headphone Amp for iPad®, iPhone® and iPod Touch®. iDo extracts audio data in its original digital form (in USB Host mode) from Apple mobile digital devices, delivering bit-perfect, low-jitter, audiophile-quality music file playback. The Icon iDo delivers audiophile-grade CD quality sound to digital music files stored on Apple® mobile digital devices. iDo is ideal for music enthusiasts and musicians alike who primarily listen to—and have their digital music libraries stored on—these devices. Apple products are becoming the hub of a person’s entire music and audio collection, so improving the audio quality produced by these devices is key. The Icon iDo delivers on that at very affordable price point. A fast and easy connection. Using the Icon iDo is simple. Users can connect any Apple mobile device to the Icon iDo with the Apple® approved and included 30-pin sync/charging cable, attach the power supply, and then plug the Icon iDo into a home stereo system using RCA cables or a single coaxial. Users can also plug in headphones directly into the Icon iDo for personal high quality sound playback in a manner the artist intended it to be heard. How iDo makes music stored on Apple devices sound even better? Apple uses its own audio codec, Apple Lossless Encoder (ALE), to compress and store music files on its devices in original CD quality without loss. However, even ALE files only sound as good as the default DAC (digital-to-analog converter) found within the mobile digital device. Icon iDo bypasses the built-in DAC and extracts the audio data stored on the device in its original digital form in USB Host Mode. It then converts the high-quality files for bit-perfect and low-jitter music playback. A portable power station for the ultimate headphone listening experience. Icon iDo also offers a built-in headphone amplifier capable of powering power-hungry headsets, giving users a total audio experience. By properly powering headphones, Icon iDo enhances the auditory performance of the headphones because optimal amperage is being delivered to them, allowing for greater audio clarity. *The maximum sample rate currently supported by Apple is 16-bit/44.1kHz or 24-bit/48kHz. **Icon iDo is designed to work with Apple iTune and iPod software. Other applications may not work (but we have not found any application that is incompatible with iDo). Features Bit-perfect, low jitter USB Host Mode operation Digitally controlled analog volume control provides precise control, accurate channel tracking and superior resolution. 3.5mm headphone output jack 24-bit DAC No sample rate conversion Compatibility iPod touch (3rd and 4th generation) iPod classic (6th generation, from 2009) iPod nano (6th generation) iPhone 4 iPhone 3GS iPhone 3G iPad 2 iPad * Only iOS3 and later versions are supported. * iOS4.5 - when connecting to iDo, the Apple Mobile Device volume is fixed at maximum and not allowed to be changed on the device. * iOS 5 - when connecting to iDo, theApple Mobile Device volume is set to about 30%, but can be changed on the device. Companion Product: Icon Amp

The Nuforce Icon HDP incorporates a full-speed USB DAC (24bit/96kHz) and full-function S/PDIF D/A converter (24bit/192kHz), plus a headphone-amplifier circuit and preamp output. Supporting digital USB, S/PDIF in coaxial and 3.5mm optical (3.5mm) modes, along with an analog line input, the HDP accommodates all manner of audio devices. The Icon HDP, which has been designed to serve as the heart of a high-performance audio system, competes head-on with DACs and preamps costing several times its price. Note: The Icon HDP employs the same DAC as our high-end CDP-8 (MSRP $1450.00) and a preamp similar to that of the P-8S (MSRP $1650.00). The following design features contributed to the stellar performance of the Icon HDP: The digital input has no capacitors in its signal path. The analog input utilizes a single DC-decoupling capacitor. Components along the signal path are minimized. The 24/96 USB interface outputs a I2S signal to a high-quality DAC. The digital circuit occupies a separate daughter board. The DAC chip consists of four internal 24/192kHz DACs that provide a fully differential and balanced output. The differential signal's DC offset operates without a need for decoupling caps. Digital and analog voltages each have separately isolated internal power regulations.

Specifications.

Analog Inputs RCA or 3.5mm when inserted Digital input S/PDIF - Coaxial or 3.5mm Optical when inserted. Coaxial up to 192kHz/24-bit or Optical up to 192kHz/24-bit Coaxial input impedance 75 Ohm USB DAC USB 1.0 and 1.1 up to 44.1kHz/16-bit, USB 2.0 Full-Speed up to 96kHz/24-bit 88.2 kHz is not supported RCA Output 2.6 Vrms (cuts off when headphone is inserted) Output impedance 100 Ohm Headphone Output 6.3mm full-size headphone output jack drives headphones up to 600-Ohm (96 mW@600-Ohm) Output impedance 10 Ohm Headphone power spec: 288mW rms @ 30 Ohm 210mW rms @ 120 Ohm 152mW rms @ 300 Ohm 123mW rms @ 500 Ohm 96mW rms @ 600 Ohm 59mW rms @ 1200 Ohm 43mW rms @ 1700 Ohm 35mW rms @ 2000 Ohm THD+N 0.001% @ 1kHz. Frequency response 10Hz to 100kHz (-0.5dB). SNR > 100dB Power Requirement 12-15V, 1.6A, 100-240VAC (Worldwide AC). Dimension 6" x 4 1/2" x 1". Weight 1 lb.

Anmeldelser:

www.6moons.com/audioreviews/nuforce14/hdp.html

www.techradar.com/reviews/audio-visual/hi-fi-and-audio/hi-fi-accessories/nuforce-icon-hdp-684700/review

www.hometheaterhifi.com/digital-analog-converters/841-nuforce-icon-hdp.html

Specifications Input USB (USB 1.1, 2.0 compatible) USB DAC: USB 1.1, 2.0 compatible. USB native bit rate: 32, 44.1, 48, and 96 kHz, 24-bit Maximum sampling rate: 96kHz Resolution: 24-bits Output Analog RCA Output = 2Vrms Dynamic Range: 90dB S/N Ratio: 98dB THD+N 0.05% Digital Output: coaxial RCA 75-ohm Headphone output jack Power output: 80mW x 2 @ 16-Ohm Headphone impedance 16-300 Ohm Frequency Response 20-20kHz Power USB Bus Powered, 80 mA/5V Maximum power consumption: 500mW Dimensions 68x38x21mm Included Accessories USB cable (1 meter)

Specifications:

•USB (USB 1.1, 2.0 compatible)

•USB DAC: USB 1.1, 2.0 compatible. USB native bit rate: 32, 44.1, 48, and 96 kHz, 24-bit

•Maximum sampling rate: 96kHz

 •Resolution: 24-bits Output

•Analog RCA Output = 2Vrms

•Dynamic Range: 90dB

•S/N Ratio: 98dB

•THD+N 0.05%

•Digital Output: coaxial RCA 75-ohm

•Headphone output jack, power output: 80mW x 2 @16-Ohm Frequency Response:

•20-20kHz Power

•USB Bus Powered Dimensions:

•68 x 38x 21mm

USB DAC IC: Burr Brown PCM2704 USB DAC (digital to analog converter) USB Input: USB Type B Female connector x 1 Analog Output: Headphone 3.5mm jack (Volume Controlled by PC or Mac) Signal-to-noise ratio 98dB, Dynamic Range: 98dB THD+N: 0.006% (RL > 10 k, Self-Powered) Audio Formats: Lossless Formats: APE, FLAC, WMA Lossless, Apple lossless or other Uncompressed formats: WAV, AIFF, PCM or other Compressed formats: MP3,AAC,Ogg Vorbis,MP2,MusePack,WMA or other System Requirements: All systems: 256MB RAM with 30MB hard disk space Windows OS: Windows NT/2000/XP/Vista or later Macintosh: Mac OS X 10.3 or later Linux, PC LinuxOS 2007, Fedora core 7, Ubuntu 7.04 or other Power Supply: USB Bus Power or External power(Optional): DC 4.35V - 5.25V(max)(e.g. AA size rechargeable battery 1.2V x4=5V, don't use normal batterieswith 1.2V x4=6V, it would be too high for safety and good sound performance) Case: Stylish aluminium Accessories: 1.5m type A to type B cable x 1 Mini Jack to 2 Phono Sockets Adapter x 1 User Guide x 1 Warranty Card x 1