Classe DAC-1 - D/A Converter With Dual UltraAnalog 20-bit DACs

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General:
Well made DAC from Classe with a slim profile and great looks.

Featuring dual 20-bit DACs, one dedicated to each output channel.

Sounded great during testing from multiple digital sources (streaming, CD, etc).

Note: This DAC-1 is being sold with working single ended RCA outputs ONLY. The balanced XLR outputs do not work.

SkyFi Cosmetic Notes:
Some light scratches on the brushed surfaces but overall good condition.

SkyFi Technical Notes:
Balanced XLR outputs do not work.

Ownership:
Second Owner

Connections:
Optical, Balanced (AES/ABU), and Coaxial S/PDIF Inputs.
Single Ended RCA and Balanced XLR outputs.

General Sound:
Smooth, uncolored, undistorted natural and clean

Working Condition:
Working perfectly and tested on our bench with both CD and DVD. XLR and RCA working as they should.

Included:
Just the Unit

Packing:
Will be packed using our highly developed in-house process and custom packing materials.Specs:
Analog:
Controls: Digital input, phase select, display brightness and standby
Sample Rate: 32 kHz, 44.1 kHz, and 48 kHz
Digital to Analog Conversion: UltraAnalog 20-bit DACs in balanced configuration
Digital Filter: oversampling, HDCD decoder and filter
Analog Filter: Passive linear phase
Frequency Response: 20 to 20 kHz +-0.3dB

Digital:
Output Impedance: 50 Ohms
Frequency Response: 20 to 20 kHz +-0.1dB
Harmonic Distortion: Less than 0.003% @ 1 kHz
Output Levels: (RCA): 1.52 Vrms (Normal CD), 3.04 Vrms (HDCD) (XLR): 3.04 Vrms (Normal CD), 6.08 Vrms (HDCD)
Signal-to-Noise Ratio: 110dB
Channel Separation: 123dB @ 1 kHz
Voltage: Factory set 100, 120, 220, 240 VAC
Power Consumption: 25 Watts

Dimensions:
19.09" x 14.17" x 3.15" (W x D x H)

Weight:
17.6 lbs.

Approximate Age:
1995

Link to Manual:
Click Here

Recommended Cables:
Kimber Kable - RCA Interconnects - Better

Kimber Kable - RCA Interconnects - Best

Kimber Kable - Coaxial Digital Interconnect

Kimber Kable - Optical Digital Interconnect

Kimber Kable - Digital AES/EBU Interconnect

Kimber Kable - Power Cords - Good

Testing Process:
We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect resistors and other passive components for signs of overheating. 

After the visual inspection we connect the DAC's RCA outputs to our Sencore PA81 Power Analyzer which simulates a real world input impedance and allows us to monitor the output on an oscilloscope. We are equipped to test optical, coaxial, and USB inputs at Redbook CD Quality.

We start with a test signal to verify signal lock and proper output on both channels. If the DAC has balanced outputs these are also tested at this time. If the DAC has multiple Optical and Coaxial inputs they are all checked for proper lock. USB inputs are tested with a MacBook Pro. 

After proper function is verified, we setup the DAC for a listening test to evaluate general audio reproduction quality and monitor for clicks, pops, or any other audible signs of issues related to dropped signal lock or failing audio output stages. We often connect the DAC under evaluation to our long term test rig for a long test stint to verify stability under real world operating conditions.