IFi Micro iDSD Signature DAC/Headphone Amp: Burr-Brown Dual DAC and MQA Processing

English iFi has unveiled its next portable DAC. The Space Blue Micro iDSD Signature is a portable DAC / headphone amplifier. The presence of a built-in battery gives it the ability to work up to 12 hours, but it is equally important that such an ultra-stable power source is free from problems associated with the AC mains – dips, peaks, noise, and others.

The dual heart of the novelty is a pair of Burr-Brown DACs, which this time operate in a configurable “interleaving” configuration, providing two pairs of signals per channel. At the output, this provided improved quality – the noise level was reduced by 3 dB.

IFi Micro iDSD Signature

The maximum parameters of the input signals with which the Micro iDSD Signature is ready to work are PCM 768, DSD 512, and 2xDXD. MQA should be added to this. A proprietary iFi GMT (Global Master Timing) femto-precision clock generator, complemented by an intelligent memory buffer, is responsible for the absence of jitter. The system also has a proprietary filter GTO (Gibbs Transient Optimized), and a firmware change will allow you to choose options for digital filters. In the original firmware, the Micro iDSD Signature digital stage already has a decent amount of filters: Standard, Minimum Phase and Bit-Perfect for PCM files, as well as Standard Bandwidth, Extended Bandwidth and Extreme Bandwidth for DSD.

The built-in headphone amplifier is also capable of working in 3 modes: in addition to “Normal”, there is also Turbo to increase power and Eco for use with highly sensitive in-ear headphones and extend battery life. In addition, iEMatch technology, which controls the output level, is complemented by XBass + and 3D + settings. With power up to 4,100 mW, the Micro iDSD Signature is ready to work with headphones of almost any impedance. In the analog part of the device, low-impedance components are installed, assembled in a direct-coupled circuit without a feed-through capacitor.

IFi Micro iDSD Signature

The digital signal Micro iDSD Signature is received on the USB Type-A connectors and the 3.5 mm connector for S / PDIF, the electrical or optical signal is supplied using the supplied adapter. The analog RCA output will allow you to connect an external integrated amplifier, power amplifier or a pair of active speakers, since this line input can be regulated. For headphones, a standard 6.3 mm output or a balanced Pentaconn 4.4 mm is provided.

IFi Micro iDSD Signature

The DAC will go on sale this month in a limited edition, priced at 699 euro in Europe.