Schiit Audio Yggdrasil Multibit DAC, Yggy+ OG Version

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General:
The Yggdrasil is the best DAC that Schiit makes.

It features very high-quality True Multibit DACs plus balanced connections and a USB interface. Due to its build quality it also has great electromagnetic isolation.

There are a total of four DAC chips, 2 per channel, in a dual hardware balanced configuration. 

This listing is for Yggdrasil "Yggy + OG" version with "Unison USB" plus "2018 2.01" analog boards. The "OG" variant has the original multibit DAC chip configuration with the second generation (A2) analog board.

Just like all Schiit products it's made here in the USA. 

From Schiit Audio:
Unique True Multibit™ Performance
Both Yggdrasil+ versions use our True Multibit architecture, a unique combination of our proprietary time- and frequency-domain optimized digital filter and integrated, medical/defense grade multibit D/A converters. Yggdrasil’s DSP-based digital filter has a closed-form solution—it retains the original samples, performing a true interpolation. Only this digital filter gives you the best of both NOS and upsampling designs. 

Convenience and Flexibility
Yggdrasil+ isn’t just about ultimate performance. At the same time, we’ve included 5 digital inputs, including our own Unison USB™ interface with complete electromagnetic and electrostatic isolation. Ease of access is assured with standard remote control, and we’ve provided features like absolute phase inversion and NOS mode so you can optimize for your individual system and recordings.

Fully Modular Architecture—Ready for the Future
Only Yggdrasil+ offers the flexibility and assurance of a truly modular architecture, both hardware and firmware. Literally every board—from input to output—is easily replaceable, with its uniquely reconfigurable chassis provides for future expandability. This unique upgradability gives you great performance now, and assurance for tomorrow.

Designed and Built in the USA
By “designed and built in the USA" this is what we mean: the vast majority of the total production cost of Yggdrasil —chassis, boards, assembly, etc— goes to US companies manufacturing in the US. Our chassis and transformers are made in California. Our PCBs are made in California or Nevada, and it all comes together in our San Antonio facility.

SkyFi Cosmetic Notes:
Almost no signs of wear with only a couple of light scratches.

Ownership:
Single Owner

Connections:
RCA, XLR,

General Sound:
Accurate to the recording

Cosmetic Condition:
8/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. See our detailed rating description here.

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 and power cord.

Packing:
Will be packed using our highly developed in-house process and custom packing materials.Original MSRP:
$2,699.00

Specs:
Analog Stage:
- Frequency Response: 20Hz - 20kHz, +/-0.1dB, 0.5Hz - 200kHz, -1dB
- Maximum Output: 4.0V RMS (balanced), 2.0V RMS (single-ended)
- Output Impedance: 75 ohms 

Digital Inputs:
- Supported formats: Up to 24/192 bit
- Available inputs: AES/EBU, RCA, BNC, Optical (Toslink), USB
- Input Receivers: AKM 4313 (SPDIF), C-Media CM6632 (USB) 

Other key features:
- DAC Chips: TI DAC11001B (4 chips, 2 per channel, dual hardware balanced)
- Analog Stage: LME49724 differential stage
- Digital Filter: Schiit's proprietary bitperfect closed-form digital filter
- Clock Management: Bitperfect clock management at all native 

Performance Metrics:
- THD+N: -118dB referenced to full output (0.0001%)
- IMD: <0.0002% (CCIF)
- SNR: > 128dB

Dimensions:
16 x 13” x 2.875”

Weight:
25 lbs.

Link to Manual:
Click Here

Recommended Cables:
Kimber Kable - RCA Interconnects - Better

Kimber Kable - RCA Interconnects - Best

Kimber Kable - BALANCED XLR Connectors - Better

Kimber Kable - BALANCED XLR Connectors - Best

Kimber Kable - Coaxial Digital Interconnect

Kimber Kable - Optical Digital Interconnect

Kimber Kable - Digital AES/EBU Interconnect

Kimber Kable - Select Series Reference USB Cable

Kimber Kable - Power Cords - Good

Kimber Kable - Power Cords - Better

Kimber Kable - 14AWG (Gauge) Power Cords - Best

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.