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iFi - micro iDSD Signature DAC/Amp - Discontinued

Product SKU: micro iDSD ST

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Product Details

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Micro iDSD Signature by iFi audio

iFi Audio's top-of-the-range desktop/transportable DAC and headphone amp will supercharge your tunes.

Out of this world

Sporting a Space Blue finish and powered by a built-in rechargeable battery, the micro iDSD Signature is a transportable DAC/headphone amp that’s ready for anything that the universe throws at it.

Battery power means it’s ultra-clean with ultra-stable DC power and avoids the pitfalls of AC mains – dips, spike and noise-inducing RFI/EMI pollution.

And with up to 12 hours playing time, depending on the headphones and performance mode engaged, it feels like you could take it to the moon and back.

Finely tuned

Based around two Burr-Brown DAC chips in a custom ‘interleaved’ configuration, the digital engine has four pairs of differential signals – two pairs per channel. This means

  • a lower noise floor
  • improved channel separation
  • finer musical detail and micro-dynamics

The micro iDSD Signature handles up to PCM 768, DSD 512, 2xDXD and MQA. All this is done natively. Both PCM and DSD remain ‘bit-perfect’.

Precision personified

Extensive jitter-eradication technologies are applied to the digital engine, including iFi’s GMT (Global Master Timing) femto-precision clock and the intelligent memory buffer.

The micro iDSD Signature also comes with iFi’s GTO (Gibbs Transient Optimized) digital filter installed. And exclusive firmware available means you can change digital filters as you wish.

Circuit training

With up to 4100mW of power the micro iDSD Signature can drive all manner of headphones with aplomb, from highly sensitive in-ear monitors to current hungry planar headphones.

The signal path has been refined to maximise sonic texture. High spec components featuring class-leading qualities such as low ESR (Equivalent Series Resistance), high stability and low distortion mean top-notch sound quality and maximum musical enjoyment.

Add in the direct-coupled nature of the circuit – no coupling capacitor is present – and the micro iDSD Signature definitely runs rings around the competition.

Versatile sonic tailoring

One size no longer fits all when it comes to quality listening.

The digital stage of the micro iDSD Signature features a variety of filter settings:

  • ‘Standard’, ‘Minimum Phase’ and ‘Bit-Perfect’ for PCM files
  • ‘Standard Bandwidth’, ‘Extended Bandwidth’ and ‘Extreme Bandwidth’ for DSD

The amp stage also has three settings to adjust power and gain. As well as ‘Normal’, you get

  • ‘Turbo’  to ramp up the level of drive for current-hungry headphones
  • ‘Eco’ to dial down the power to suit high-sensitivity in-ear monitors and/or to extend battery life

Complete this with our iEMatch technology that adjusts output level and our XBass+ and 3D+ signature sonic tweaks, and the micro iDSD Signature is flexible to the max.

Get connected

The micro iDSD Signature features two digital audio inputs – USB Type-A and an S/PDIF socket that accepts both electrical, via a 3.5mm connector, and optical signals – adapter supplied.

It also houses a pair of RCA analogue outputs to connect to a pair of powered speakers or a power amp and passive speakers, to act as a DAC and preamplifier.

There is a 6.3mm output for headphones that have a standard single-ended connector (headphones with a 3.5mm jack can be connected using an adapter) and a 4.4mm Pentaconn output for headphones offering balanced connection.

Both headphone outputs utilise our ‘S-Balanced’ output circuitry. This delivers the sonic benefits of balanced connections with all headphone/earphone types – even those with single-ended connectors – cutting crosstalk and associated distortion in half.

Majestic measurements

Output Power

iDSD Signature = 4,100mW

Laptop headphone = 30mW

136x more headphone power

Details

  • The Burr-Brown True Native® chipset means file formats remain unchanged. Listen to music as the artist intended in the format in which it was recorded
  • Doubling the DAC chips results in 3dB lower noise floor and better channel separation. Together with power supply advancements and advanced channel interleaving, the noise floor has been halved.
    All of this equals stellar sonic performance
  • Hi-Res True Native® playback for all music formats from MP3 to DSD512, PCM768 and 2xDXD
  • Listen to Master Quality Authenticated audio straight out of the box. Connect to Tidal Masters and check the option to stream MQA
  • This OV series operational amplifier is another example of a top-notch component used to get extremely low noise, low distortion (0.0001%) and wide bandwidth
  • With output power up to 4,100mW, this headphone amplifier drives all headphones with ease. It has 3 power modes – Eco, Normal and Turbo. Power and gain can be dialled-in perfectly to suit ALL headphones
  • iFi’s exclusive S-Balanced® circuit delivers maximum performance from single-ended and balanced headphones alike
  • 3D+ Holographic® delivers an immersive, deep soundstage. 
    XBass+® delivers a deep, tighter bass sound
  • TI low-noise ICs offer great unity gain bandwidth, very low noise and distortion, high output drive capability, Common-mode and Power Supply Rejection Ratios of over 100 dB, wide maximum-output-swing bandwidths and high slew rates
  • iFi always uses the best components possible. These OS-CON™ capacitors provide excellent noise reduction and have a long life span. They are not often found in products costing <US$1000
  • DirectDrive® equals a direct signal path which means less signal degradation. This direct signal path is unequalled in audio and is the reason why the sound is so ‘true’

Specifications

In/Out

Digital Inputs USB 3.0 type A “OTG” Socket (USB2.0 compatible/with iPurifier® technology built-in)
S/PDIF (3.5m coaxial/optical)
Output Balanced: 4.4mm
SE: 6.3mm/RCA

DAC

DAC Bit-Perfect DSD & DXD, PCM DAC by Dual-core Burr Brown
Clock Ultra low jitter GMT Femtosecond Clock
Formats DSD512 / 256 / 128 / 64,
Octa / Quad / Double / Single-Speed DSD,
DXD (768 / 705.6 / 384 / 352.8kHz),
Double / Single-Speed DXD
PCM (768 / 705.6 / 384 / 352.8 / 192 / 176.4 / 96 / 88.2 / 48 / 44.1kHz)
MQA

Filters

DSD Extreme/Extended/Standard Bandwidth
PCM Bit-Perfect/Minimum-Phase/Standard
DXD Bit-Perfect Processing

Line Output

Dynamic Range (Line) >117db(A)
THD & N (0dBFS Line) <0.003%
Output Voltage (Line) >2V
Output Impedance <240Ω
Jitter (correlated) Below AP2 test set limit

Headphone Power Output

Turbo Mode Power (max) 10.0V/4,100 mW
Power (continuous) >1,560 mW @ 64 Ohm
>166 mW @ 600 Ohm
Normal mode Power (max) 5.5V/1,900 mW
Power (continuous) >100 mW @ 300 Ohm
>950 mW @ 32 Ohm
Eco mode Power (max) 2.0V/500 mW @ 8 Ohm
Power (continuous) >250 mW @ 16 Ohm
Dynamic Range (HP) >115dB(A) (Eco Mode, 2V Out)
THD &N (HP 500mW/16R) < 0.008%
Output Voltage (HP) >10V (Turbo Mode)
Output Impedance <1Ω (iEMatch not engaged)
Maximum Output Power 4,100 mW @ 16 Ohm Load
Continuous Output Power 1,000 mW @ 64 Ohm Load

Spec

Battery Lithium-polymer 4800mAh
Power System Charging via USB-C, BC V1.2 compliant up to1500mA charging current
Dimensions 172 x 67 x 27 mm
6.8" x 2.6" x 1.1"
Weight 295 g (0.65 Ibs)

Product Reviews

iFi - micro iDSD Signature DAC/Amp - Discontinued

Customer Reviews
4.7 Based on 17 Reviews
5 ★
82% 
14
4 ★
6% 
1
3 ★
12% 
2
2 ★
0% 
0
1 ★
0% 
0
Customer Photos
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Filter Reviews:
DC
08/20/2022
Douglas C.
United States United States

Size/weight not worth it

This has a battery, so it's technically portable, but: 1) it is really heavy compared to the smaller DAC/Amps like the iFi Go Blu and the Fiio BTR5; and 2) it requires a weird female USB to lightening converter cable to use with my iPhone. All-in-all, if I am going to travel and want to take my HD660s or Ananda, then I will pack this and take it; but otherwise, it is too unwieldy to really be my daily portable solution.

RB
08/13/2022
Riley B.
United States United States

Works very well

I really love the IFI Signature. It is surprisingly compact and delivers a lot of power to my Focal Elegia headphones. They match very nicely. I really like the XBass feature as well. I find that using it does not seem to affect the mids or lowers mids for the most part. It increases the sub bass and lower mid bass delivering more rumble, punch and slam. The treble is clear and present, but not harsh. The mids are a bit interesting. I tried the SBalanced output with my Sennheiser IE800S and found the mids to be way to scooped out, but the Focal Elegia and every other iem i own sounds fantastic. The IE800S just seems like a far from perfect match for the IFI at least out of SBalanced 4.4 output. I have not tried single ended, yet. Overall very happy. Mostly like to use them with headphones. Most of my iem collection works great, too!

AK
07/26/2022
ANVAR K.
United States United States

I fell in love with this Blue Angel

I mainly wanted a headphone amp for my desk with ability to drive nicely any headphone. This blue angel performs with a charm: sound quality and a lot of built in feature. It’s definitely worth a single penny. One of the best all in one audio solutions on the market. Thank you Team Audio46 for quick execution of my order. Keep rockin’ guys!

Audio46 iFi - micro iDSD Signature DAC/Amp ReviewAudio46 iFi - micro iDSD Signature DAC/Amp ReviewAudio46 iFi - micro iDSD Signature DAC/Amp Review
JL
07/08/2022
Jose L.
United States United States

iFi idsd Signature

Excelente. Tiene un sonido claro, transparente y con mucha potencia. Muy complacido con la compra y por el excelente servicio de Audio 46.

SC
06/23/2022
Sam C.
United States United States

Nice DAC/Amp!

Drove my Arya like a charm!

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