Item Descriptions:

Introduction machine made with high-class machine design method

Various methods are adopted for improving the sound quality in the development of audio equipment, but what is common in catalogs and the like is a copy such as "use high-quality parts dedicated to audio".

Certainly, if you use high performance parts you can expect improvement in sound quality, but by all means the overall cost will rise.

The basic policy of Soundfort,

Feel free to enjoy music more comfortably for more people

about.

for that purpose

The challenge of achieving high sound quality while keeping costs down

We have to solve it.

So, in Soundfort, an experienced Japanese development designer who is also an audio enthusiast is approaching not only the selection of parts but also the characteristics of each part to the utmost to maximize the arrangement of circuit patterns and parts repeatedly

Taking tuning while listening repeatedly, we usually adopt a design method that is often used mainly for high-end machines.

Even in DS-100 +, sound quality exceeding class is realized by repeating tuning such as circuit pattern and component placement change until convincing.

DS-100 + can not only realize the benefits of USB DAC for those who "use USB DAC for the first time", but also can fully meet the requirements of audio fans such as "I want to combine with existing system"

It is a product which the attention of Japanese engineers breathes, which has sound quality and performance beyond the introductory machine.

Secure a vast dynamic range by thorough cleanup of the power supply, such as stable external power supply, separation of digital / analog power supply circuits

Normally, in this class of USB DAC, the "bus power" method of supplying power from the PC via USB is often used, but the DS-100 + dare to supply a stable power supply from the external AC adapter.

This is because the USB bus power supply is susceptible to influences such as noise mixing by a personal computer and voltage fluctuation due to simultaneous use of other USB devices, and it is difficult to secure enough electric power to obtain high driving power,

It is not so favorable for audio.

The power supply circuit of the DS - 100 + produces both ± 12 V power supply by a noise filter which reduces the switching noise of the AC adapter, an isolated low noise DC - DC converter, and supplies a stable clean and stable power supply to each circuit.

Of course, the DC - DC converter has ripple and spike removal circuit so that its switching noise does not influence the circuit, realizing a natural sound quality without coloring by excluding the capacitor from the signal path

I will.

Furthermore, an operational amplifier (I / V conversion circuit, LPF, a buffer (I / V conversion circuit, LPF, buffer), which suppresses the influence of the digital circuit on the analog circuit by mounting the power supply circuit in separate systems of digital and analog,

Amplifier circuit etc.) to ensure the extensive dynamic range by drawing out the original performance.

Main Specifications

DAC:

PCM 1798 DB (S / N: 123 dB, 96 kHz / 32 bit, DSD 64)

Supported OS

: Windows XP / 7 / 8.1 / 10, Mac OS X, macOS Sierra

output:

RCA × 1 (3 Vrms 2 kΩ), optical digital × 1

THD

:> 0.0005% at 1 kHz 3 V rms

SNR

: <-102 dBA

Headphone output

: 6.3 mm standard stereo jack (400 mW @ 60 Ω)

Recommended impedance

: 16 to 300 Ω

THD

: 0.004% (1 kHz 1 Vrms at 32 Ω)

SNR

: <-105 dB

External dimensions

: H48 x W 96 x D 121 mm (excluding projections)

weight

: About 450 g

accessories

: AC adapter (12 V / 1A), USB cable (1.0 m), instruction manual

Specifications of high-performance DAC are unlimited

For DAC chips, TI's excellent performance "

PCM 1798 DB

"USB interface adopted" SA 9027 ".

Supporting Async (asynchronous) transfer mode minimizes the influence of jitter noise caused by the inside of the personal computer and the transmission path, realizing stable and high-quality playback.

Also, adopt "OPA 2133 PA" which is well-established in sound quality for LPF (low pass filter) and OP amplifier of buffer amplifier circuit, and TI's new series "OPA 1652" for I / V conversion circuit,

It is designed to derive the original performance which each has by driving by the power supply which made it.

Ultra low distortion headphone amplifier installed

High performance headphone amplifier IC with ultra low distortion for headphone amplifier "

TPA 6120 A 2

"It adopts, it can drive with a margin from a low impedance earphone to a high impedance headphone, coupled with a clean and stable supply of power, even a single headphone amplifier has performance exceeding the class.

Also, taking advantage of being a compact casing, it is installed beside a personal computer and also equipped with S / PDIF optical digital output so that it can be easily used in combination with existing audio system and AV system at a remote location,

It can also be used as DDC.

Other matters

Product details:

http://www.soundfort.jp/products/ds-100plus/

FAQ:

http://www.soundfort.jp/support/faq/

Features:

• Please enter model number Confirm this is compatible:
• A high-resolution compact desktop USB DAC equipped with a high-performance headphone amplifier that is suitable for first time high resolution, PC audio introductory.
• Adopt high-performance parts of one class such as "PCM 1798 DB" for DAC, "TPA 6120 A 2" for headphone amplifier.
• To the power supply is not dedicated USB bus power, but a stable external power supply with power by the AC adapter is supplied.
• In addition to separating analog and digital circuits on the board, it adopts an isolated low noise DC / DC converter that produces ± 12 V both power supplies for analog circuits, eliminating capacitors from the signal path.
• The circuit design optimized by experienced Japanese engineers repeatedly auditioned realizes a natural, high quality sound with clear, uncolored, spreading sounds of depth, hearing until breathing.

Product information:

Shipping Weight: 712 g

Package Dimensions: 9.40 x 16.61 x 24.10 cm