| Model | X-DAC 3.0 | X-DAC 3.0 Signature | DAC-2 | DAC-2 w/Upgrade Kit |
| DAC | Crystal CS4328 | Crystal CS4328 | B-B PCM-1702 | B-B PCM-1702 |
| Input Receiver | Crystal CS8412 | Crystal CS8412 | Crystal CS8412 | Crystal CS8412 |
| Onboard Jitter Reduction Circuit | Asynchronous Jitter Reduction | Asynchronous Jitter Reduction | None | None |
| Jitter Reduction Technology | AD1891 + local ECL clock | AD1891 + local ECL clock | CS8412 built in PLL only | CS8412 built in PLL only |
| Jitter Reduction filter cutoff frequency (jitter filtered above this frequency) | 3 Hz | 3 Hz | 20k Hz | 20k Hz |
| Digital Filter | Integrated w/DAC | Integrated w/DAC | PMD-100 | PMD-100 |
| Digital OS and Analog AntiAlias Filters complimentary phase shifts? | Yes, less than 1 degree phase shift 20-20k Hz | Yes, less than 1 degree phase shift 20-20k Hz | No, phase shift not specified. | No, phase shift not specified. |
| Non-HDCD Gain Reduction | Not required! | Not required, all disks are treated equal by X-DAC. | Analog Domain | Analog Domain, mandated by HDCD license. |
| I/V Converter Op Amps | Not required. | Not required. | AD 844 | AD 811 |
| Output Buffer Op Amps | AD 811 | AD 811 | AD 817 | AD 817 |
| Purist direct DAC output option? | Yes | Yes | No | No |
| Volume control option for direct power amp connection? | Yes | Yes | No | No |
| IC Sockets | Machined Gold Plated | Machined Gold Plated | Machined Gold Plated | Machined Gold Plated |
| Output Stage Resistors | Metal Film | Vishay Metal Foil or Mills wire wound, customer option | Holco H8 Metal Film | Caddock MK-132 Metal Foil |
| Analog Filter Capacitors | Wima | Wima | Wima | MultiCap |
| Analog Filter Type | 1st order | 1st order | 3rd order | 3rd order |
| Rectifier | Bridge | IR HEX-FRED High Speed Soft Recovery Diodes | Bridge | Telefunken Soft Recovery Diodes |
| Main Power Supply Capacitance | 9,000 uF | 45,000 uF + 224 mH LCLC filtered | 10,800 uF | 10,800 uF |
| Power Supply Caps | Panasonic HFQ & F | Panasonic HFQ, F, Z, & Blackgate | Panasonic HFQ | Panasonic HFQ |
| Main Power Supply Shunt Caps | Wima | Wima | None | Wima |
| Local De-coupling (Electrolytic) | 150 uF | 150 uF | 47 uF | 47 uF |
| Voltage Reg. - # | 9 | 9 | 8 | 8 |
| - Type | Fixed | Fixed, Adjustable, & Shunt | Fixed and Adjustable | Fixed and Adjustable |
| - Quality (Adjustable) | N/A | Linear Tech. | LM Type | Linear Tech. |
| External AC Power Supply? | Yes | Customer option | No | No |
| Power Supply Transformers | 1 | 2, 1 - Analog & 1 - Digital | 1 | 1 |
| Digital Inputs | 1 to 4 | 1 to 4 | 2 | 2 |
| Phase Switch | Yes | Yes | Yes | Yes |
| Mute/Calibrate Switch | Yes | Yes | No | No |
| Output Jacks | Gold Plated w/Teflon insulation | Gold Plated w/Teflon insulation | Gold Plated | Kimber UltraPlate |
| Analog Hook-Up Wire | Not required, direct PCB connection. | Not required, direct PCB connection. | Kimber TCSS | Kimber Silver AGSS |
| Digital Hook-up Wire | Not required, direct PCB connection. | Not required, direct PCB connection. | Kimber TCSS | Illuminati Ohm-Aha! 75 |
| Chassis Dimensions | 17" W x 2" H x 12" D | 17" W x 2" H x 12" D | 9.5" W x 2" H x 7" D | 9.5" W x 2" H x 7" D |
| Chassis Optional? | Yes | Yes | No | No |
| Expansion room in chassis? | Yes | Yes, can hold X-Pwr LCLC PS. | No | No |
| Kit complexity? | High | High | Low | Low |
| Kit customizable to individual needs? | Yes | Yes | No | No |
| Price $U.S. with case | $872.00-$992.00 | $1246.00-$1366.00 | $499.00 | $648 |
| Price $U.S. without case | $642.00-$762.00 | $1016.00-$1136.00 | Not available | Not available |
| Price $U.S. blank PCB & manual set | $125.00 | $192.00 | Not available | Not available |