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USB-DAC 24/192

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The Lindemann USB-DAC 24/192 is a digital/analog converter for music lovers who are looking for more than just datasheet performance. Its design has benefited from our many years of experience in developing sophisticated digital components for music. Technical details, otherwise found only in far more expensive components, make this into an audiophile highlight with an attractive price.

The USB interface of the USB-DAC 24/192 is based on an XMOS-DSP with enormous computing power (500 Mips), which can transmit music files of up to 24 bits and 192 kHz in asynchronous mode. As far as sound is concerned, this solution outshines all the other current digital music reproduction models. In sound tests, we were unable to find any other streamer or USB device which produced music at such a high standard. For good reason, the same interface can be found in products by Ayre, DCS and others.

Operation is so straightforward: you don’t even need a driver for Apple computers! For Windows computers, we offer a certified driver from the professional audio sector (made in Germany!), which works extremely well with all models of this operating system (incl. 64 bit).

The USB-DAC 24/192 makes it fun to listen to music on the computer, as well as achieving excellent results and upgrading the sound for older digital components such as CD players or DAT recorders!

In addition to the manual the provided driver CD contains trials of recommended mediaplayers like Pure Music (Mac), J.River (Windows) & Foobar (Windows).

Technology

Technology

  • Asynchronous USB interface (USB audio class 2 compatible) based on an XMOS-DSP with 500 Mips. Resolution up to 24 bits and 192 kHz. Three separate clocks for USB, 44.1 kHz (and multiples) and 48 kHz (and multiples). Bit-transparent audio signal. Perfect jitter performance. Quite easily the best USB interface around.

  • Digital interface controller (WM8805) with efficient jitter reduction due to buffer storage and adaptive PLL. Guaranteed jitter level < 50 ps. Significantly audible sound improvement for several digital sources connected up. Further standardisation of input signals due to synchronous resampling with 24 bits and 192 kHz directly before the converter module.

  • High-precision master clock with < 2.5 ps timing jitter.

  • Digital-analog converter with the excellent-sounding WM8742 by Wolfson. This converter stands out with its especially low noise outside the acoustic range, which audibly relieves the amplifier connected. Overall, a mellow, high resolution sound.

  • Minimum phase digital filter with apodizing behaviour. Time distortions in older recordings fade away with this technology. You just hear the transient response of the optimised minimum phase apodizing filter. Pre and post impulse response echoing are a thing of the past! Old digital recordings particularly benefit from this trick and sound far less digital as a result.

  • Fully-balanced, analog output stage (ADA4927) with extremely high bandwidth. The analog output filter is only first order (6 dB/octave) and is supported by the high common mode rejection of the output amplifier. Therefore, the signal’s impulse behaviour is not affected by additional filtering. The result is the sound of instruments and vocals distinguished by the very finest nuances and rich tonal colours.

Special features

Special features

The analog output of the USB-DAC 24/192 has been configured using one of the best current feedback amplifiers currently available (ADA4927). Along with the enormous bandwidth spanning 200 MHz, the common mode rejection – which is outstanding right up to high frequencies – used as a filter in the USB-DAC deserves particular emphasis. 

As a result of the silicon-germanium technology used for the wafer, the module’s supply voltage is limited to +/- 5 V. The result of this is an optimal output voltage of 1.4 Vrms for 0 dBFS. Consequently, the USB-DAC 24/192 is quieter than competitors using standard operational amplifiers.However, when comparing them, please increase the volume level of the USB-DAC by +4 to +6 dB to experience the same listening level.

However, this does not mean that the USB-DAC has less definition to offer! In fact, the output voltage from the DAC module is amplified less – and therefore any potential static noises. 

The converter section of the USB-DAC 24/192 also leaves nothing to be desired. An ultra-stable master clock (<2.5 ps jitter) guarantees the highest possible D/A conversion quality. Instead of the usual linear phase filter, an acoustically optimized minimum phase filter with “apodizing” characteristics has been used. This type of filter allows artifacts in the time domain (also in the recording) to be suppressed effectively and a new, time correct and therefore natural transient oscillation to be generated.

System requirements

System requirements

Minimum requirements for playing music with your Lindemann USB-DAC:

  • PC or notebook including Intel Core 2 @ 1.6GHz or AMD equivalent processor with at least 1GB RAM.
  • USB 2.0 interface
  • a suitable operating system:

    PC
    Windows XP incl. SP3
    Windows Vista (32/64 bit incl. SP2) 
    Windows 7 (32/64 bit)
    Windows 8 (32/64 bit) 
    Mac
    Apple OS X 10.6.4 (Snow Leopard) or higher

Features

  • Bit-transparent reproduction with a resolution of up to 24 bit and 192 kHz (HD master quality)
  • Asynchronous Mode (USB Audio Class 2), based on XMOS-DSP with 500 Mips
  • “Minimum phase” digital filtering with “apodizing” characteristic
  • No driver needed for Mac OS 10.6.4 or higher
  • Lindemann certified driver for all Windows 32bit/64bit systems (XP, Vista, 7, 8)
  • 3 years warranty