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/EM.
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
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.
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’.
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.
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.
In/Out |
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| Digital Inputs | USB 3.0 type A “OTG” Socket (USB2.0 compatible/with iPurifier® technology built-in) S/PDIF (3.5m coaxial/optical) |
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| Output | Balanced: 4.4mm SE: 6.3mm/RCA |
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DAC |
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| 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 |
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Filters |
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| DSD | Extreme/Extended/Standard Bandwidth | |
| PCM | Bit-Perfect/Minimum-Phase/Standard | |
| DXD | Bit-Perfect Processing | |
Line Output |
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| 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 |
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| Turbo Mode | Power (max) | 10.0V/4,100 mW |
| Power (continuous) | >1,560 mW @ 64 Ohm >166 mW @ 600 Ohm |
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| Normal mode | Power (max) | 5.5V/1,900 mW |
| Power (continuous) | >100 mW @ 300 Ohm >950 mW @ 32 Ohm |
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| 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) |
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| Maximum Output Power | 4,100 mW @ 16 Ohm Load | |
| Continuous Output Power | 1,000 mW @ 64 Ohm Load | |
Spec |
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| 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" |
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| Weight | 295 g (0.65 Ibs) |
