Shopping for ampear dac headphone amplifiers often means weighing cutting-edge performance against real-world budget. Here you have two iFi Audio options at opposite ends of the price spectrum: a near-new flagship and a well-used classic with some caveats. The decision is whether you want uncompromising, tested-to-spec performance or a much lower entry price with compromises.
Quick Verdict
If you want a no-compromise portable and desktop solution that is tested to 100% factory specification and includes original packaging and accessories, the iFi Audio iDSD Diablo 2 at USD 789.00 is the clear pick. If your priority is the lowest possible spend and you can work around its noted functional limitations, the iFi AUDIO Micro iDSD at USD 200.00 offers a $589 spread below the Diablo 2.
At a Glance
| Product | Listed Price | Condition | Key Hardware Notes |
|---|---|---|---|
| iFi Audio iDSD Diablo 2 USB DAC / Headphone Amplifier - Open Box | USD 789.00 | Open box | Dual Burr-Brown TrueNative DAC chips, 16-core XMOS processor, GMT Femto-precision clock, Qualcomm QCC518x Bluetooth 5.4 |
| iFi AUDIO Micro iDSD USB DAC Headphone Amplifier DSD512 Headamp With Box Used | USD 200.00 | Used | DSD512 support, Turbo power setting noted, 3.5mm jack functionality uncertain |
Where Each One Wins
iFi Audio iDSD Diablo 2 USB DAC / Headphone Amplifier - Open Box Wins For:
- Out-of-box confidence: Listed as Open box, tested to 100% factory specification, with original packaging and accessories included.
- Modern architecture: Dual Burr-Brown TrueNative DAC chips in an interleaved layout, 16-core XMOS processor, and Global Master Timing Femto-precision clock network.
- Wireless capability: Qualcomm QCC518x module over Bluetooth 5.4 for bit-perfect CD-quality wireless integration.
- Color and presentation: Listed in Red with a desktop audio amplifier design intended for mobile, laptop, or desktop use.
iFi AUDIO Micro iDSD USB DAC Headphone Amplifier DSD512 Headamp With Box Used Wins For:
- Lowest listed price: At USD 200.00, it sits at the bottom of the $200 to $789 range for this pair.
- Core format support: Listed with DSD512 Headamp capability and USB audio input.
- Included packaging: Comes with all factory packaging and accessories despite its Used condition.
- Desktop amplifier type: Same Type classification as the Diablo 2 for those seeking that form factor.
Product Notes
iFi Audio iDSD Diablo 2 USB DAC / Headphone Amplifier - Open Box

This is the flagship-positioned option for listeners who want high-resolution sound without compromise across mobile, laptop, or desktop environments. The description highlights dual Burr-Brown TrueNative DAC chips, a 16-core XMOS processor, and iFi's GMT Femto-precision clock, plus Bluetooth 5.4 via Qualcomm's QCC518x for wireless use. You get an Open box unit that has been tested to perform to factory specification and includes original packaging and accessories. A good fit if you want the most complete, modern feature set and tested performance in one unit. The limitation is the listed price of USD 789.00, which is $589 above the other option in this comparison.
iFi AUDIO Micro iDSD USB DAC Headphone Amplifier DSD512 Headamp With Box Used

This Micro iDSD is the budget entry at USD 200.00, offering USB DAC and headphone amplifier functionality with DSD512 support in a Desktop Audio Amplifier form. It comes with all factory packaging and accessories, which helps on the value side. The trade-off is in its Used condition and specific functional notes: it needs to be set to Turbo power setting to be audible, and the 3.5mm jack may not be functional based on testing with generic earbuds. It is sold as is. Choose this one if the lower price is your priority and you are comfortable with those operational quirks; otherwise, its limitations make it less suitable as a primary, do-everything unit.
Final Choice By Use Case
Choose the Diablo 2 if you want a tested, complete package with current-generation DAC, processing, and Bluetooth hardware and you are shopping at the higher end of the ampear dac headphone amplifiers range.
Choose the Micro iDSD if you want the most affordable way into iFi's Micro iDSD line, need DSD512 and USB input, and can accept the Turbo-only audibility and uncertain 3.5mm output noted for this specific Used unit.
For most buyers seeking a daily driver without functional workarounds, the Diablo 2 justifies its higher listed price. For tinkerers or secondary-system buyers focused strictly on spend, the Micro iDSD's USD 200.00 price is the draw, provided its as-is limitations fit your headphones and use.