CD player/DAC CD6

Audio Research REF 10

The success of the Reference CD9 has shown that music lovers continue to embrace their compact disc collections while adding new digital sources like computer audio to their music systems. With that in mind, we are pleased to introduce the solid-state CD6 CD-DAC. Combining a super high-resolution compact disc player with a super highresolution digital-to-analog converter in one compact chassis, the CD6 is a perfect fit for modern music playback.

The CD6 is so much more than the 5-1/2 year old CD5 that it replaces sonically and technologically. There are four digital inputs, including asynchronous USB 2.0HS, coaxial RCA, and two Toslink. All inputs handle 24 bit / 192k resolution. As you would expect, the CD6 retains the Philips PRO2R transport, still the best dedicated CD mechanism available. It is simply unsurpassed for compact disc playback.

Benefitting from what we have learned in the development of the REF DAC and CD9, the CD6 utilizes quad 24-bit DACs running in mono mode, with dual master oscillators for highest performance; one for 44.1/88.2/176.4 sample rates, the other for 48/96/192kHz sample rates. Sample rate conversion is selectable for all inputs, allowing playback in native resolution or via upsampling, including compact disc and USB. Additionally, there is a selectable digital filter offering fast or slow rolloff.

The front panel layout is identical to the REFCD9, with a dimmable display on the left side. On the right side there are three vertical LED displays indicating Sample rates (192-176.4-96-88.2-48-44.1), Input (CD-RCA-USB-TOS1-TOS2), and Fast-Slow- Upsample-Power. Underneath the LED displays are seven metal buttons for Power, Previous, Play, Next, Pause, Stop, and Input. Silver handles and buttons are standard with a natural front panel. The chassis and top cover are black. In addition to the digital inputs, the back panel includes two digital outputs (AES/EBU and BNC), single-ended RCA and balanced XLR outputs, an IR input, and a 15A IEC power connector. The CD6 comes with the metal remote. Our custom ASIO drivers must be installed in your computer for use with the USB 2.0HS input.

The CD6 has an FET direct-coupled, servo-controlled analog output stage with beefy, regulated power supplies. Because it is solid state and runs cool, the CD6 can be placed inside a closed cabinet and used as a digital hub.

Sonically, the CD6 is a stunner, uncovering new musical detail in every corner of your recordings and providing startling dynamics, both micro and macro. The top end is extended, airy and pure, while bass definition and impact are precise and powerful. The recording venues are lifelike, broad and expansive or close-up and intimate, depending on what was captured by the engineer. Like great analog, listening to music through the CD6 draws you into the performance, not just the notes, with resolution and transparency that are in service of the music.

Frequency Response: +0-3dB, 3Hz to 96kHz at rated output. 0.15dB 20Hz to 20kHz. (Balanced, 200k ohms load) @ 192kHz sample rate
Distortion: THD+N Less than .004% at 2V RMS BAL output.
Signal-Noise-Ratio: 110dB
Dynamic Range (AES17): 111dB
IMD (SMPTE): .003%
Gain: 16.5dB Balanced, 8.3dB SE.
Input Impedance: Digital: 75 ohms BNC, RCA, 110 ohms AES/EBU, OPT 660nm TOSLink fiber 44.1 to 96kHz.
Output Impedance: 500 ohms Balanced, 250 ohms SE Main (2), 20K ohms minimum load and 2000pF maximum capacitance.
Output Polarity: Non-inverting.
Max. Output: At 0.0. dB input, 5V RMS into 200K ohm balanced load
Digital Sample Rates: 24 bits @ 44.1kHz to 192kHz, SPDIF, AES/EBU and USB 2.0 HS
Upsampling: Select upsampling or Native mode; CD, RCA, AES/EBU, TOS upsample to 176.4 or 192 kHz. USB upsamples to 88.2 or 96 kHz
Master Oscillator: 22.579mHz ±20Hz for 44.1, 88.2 & 176.4kHz. 24.576mHz ±20Hz for 48, 96 & 192kHz sample rates.
Intrinsic Jitter:
Outputs Digital: XLR Balanced AES/EBU 110-ohms 4V P-P, BNC coax SPDIF 75-ohms 0.7V P-P
Channel Separation 103dB @ 1kHz
Push buttons: Power, Previous, Stop, Pause, Play, Next, Input

Signal Format (disc): Sampling frequency: 44.1kHz.
Quantization Bit: 16bit linear per channel.
Channel bit rate: 4.3218Mb/sec.
Channel modulation code: EFM (8-14 modulation)
Error correction: CIRC (cross interleave Reed Solomon Code).
Drive Mechanism (Top Load): PHILIPS CD-PRO 2 top loader
Wow & Flutter: Unmeasurable (Quartz stability). Discs: Accepts 5" (12cm) and 3" (8cm) sizes.
Optical pickup: Type: 3-beam LDGU (Laser Diode & Grating Unit), with holographic diffraction light pen. Laser: GaAIAs semiconductor, 780nm, 0.5mW maximum output. Servo: Digitally-controlled low-inertia linear positioning actuator.
Jitter reduction: High-stability crystal-controlled re-clocking for all outputs.
Display: Six-digit vacuum fluorescent, with optical filter; LED disply; CD, AES, USB, RCA, TOS, Fast, Slow, Upsample, Power, 44.1, 48, 88.2, 96, 176.4, 192 kHz
Remote Buttons:

0-9 digit entry keys
SCAN ten seconds each track
PAUSE program
REP repeat track/disc
STOP program
PLAY disc
SHUF random sequence play
search, REV
search, FWD
STBY operate/standby mode
PROG enters selection on program list
TIME elapsed, remaining track; remaining disc
A/B repeats segment
previous track
next track
Filter select
Input select
Upsample/Native mode
DSP DN Decrease display intensity
DSP UP Increase display intensity

Power Requirements: 105-125VAC 60Hz (210-250VAC 50/60Hz) 23 watts maximum. Sleep mode 0.5 watts maximum.
Dimensions: 19" (48 cm) W x 5.25" (13.4 cm) H (standard rack panel) x 12.25" (31.1 cm) D.
Weight: 25.9 lbs. (11.8 kg) Net; 34 lbs. (15.5 kg) Shipping.

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