|D-7i / 7 Supreme|
|Precision Digital Interface
Authentic high-end D/A converter developed through unified technologies of TechDAS.
Evolution of the acknowledged D-7 converter to a whole new dimension.
A fundamental characteristic for the highly acclaimed D-7 series of the standard D/A converters is to keep evolving and upgrading each version. At TechDAS we continuously work on research with the aim of improving the D-7, bringing it to new heights. During this development, starting with a fundamental principle of audio performance, we have focused on the redesign of the power supply and casing.
How much has the competition for higher resolution contributed to a better sound quality? Of course high spec data has a good amount of potential for a better sound quality but there are far more factors to define the quality itself. The overall sound relies far more on the mass of the power supply and chassis. TechDAS have accomplished refinements to those fundamental factors to push the D-7 into another dimension.
Through the development of Air Force One reference analog turntable, we at TechDAS have accumulated a substantial understanding of metallurgy. The property of metal can be drastically changed by the difference of a minute amount of alloying additives, and a great asset to us is to have such an extensive knowledge on what influences the physical property of a metal can have on sound quality, how the sound quality will change according to the combination of metals with different degrees of strength or hardness, and so on. D-7 Supreme was born from the devotion of this mining of knowledge as an authentic high-end D/A converter.
Major features of D-7/D-7i Supreme
- Employs a large independent toroidal transformer for digital/analog signals, with twice as large a capacity as the original model.
•Supporting DSD files by DSD Over PCM (DoP)
The Wolfson WM8741, TechDAS D-7 series employed for D/A chip has an capability to process the DSD file in native.
•Supporting USB 192kHz
Fully prepared for the coming of age of high resolution.
Supporting OS: WINDOWS XP (SP2 or later,) WINDOWS Vista, WINDOWS 7, Mac OSX 10.6 or later. WINDOWS OS needs to be installed with attached driver
•Digital input: Up to 192kHz for also TOS, RCA input
•Supporting iPod Digital Out
*The front USB-A terminal is also mounted on D-7/192DSD but not functional.
•High performance D/A converter
High grade DAC chip corresponding 192kHz made by the established Wolfson from England is used. All input terminals accept up to 192kHz/24bit for digital input. Ensures low jitter by mounting a dedicated clock in D/A.
•Powerful power supply
The key of the sound quality for audio products is the power. TechDAS designed a full-scale power supply ignoring costs. Adopts power circuit with large leeway by using two high capacity power transformers with one of them used as an independent power supply dedicated for analog circuit.Provides convincible music reproduction by solid sound structure with energy on each particles of the sound.
•External clock input terminal
External clock input terminal accepting 10MHz standard signal enabling higher-grade performance in connection with atom clocks or other clocks.
•Sampling rate converter
Sampling rate converter mounted to reduce jitter for all digital inputs.Integral multiple upsampling is selectable between x1, x2 and x4 by the switch on the front panel (up to x2 for 88.2kHz and 96kHz signals.)
•Balanced output (XLR) and single ended (RCA)
DAC output: Balanced output is equipped as standard in addition to single ended (RCA). Perfect for usage as high-end DA converter.
•Pre-output terminal (RCA)
Variable pre-output is included as standard equipment enabling usage as DAC-Pre. Volume carefully selected giving highest priority to sound quality enables to build a compact system with high sound quality by connecting with power amplifiers or speakers with built-in amplifiers.
•Digital output terminal (SPDIF)
Digital output terminal (SPDIF) on the back panel corresponds with sampling rate converter and can be used as an upsampling converter. It can also be used as DD converter that converts USB input to SPDIF
*Apple policy does not allow digital output for iPod input.
•High-grade headphone amplifier
Equipped with standard headphone jack. High-grade headphone amplifier based on dedicated board fully drives high impedance high-end audio headphones and provides excellent sound quality and S/N.
Board structure with high expandability
Possible to add LAN terminal in the future. Also possible to support network audio with future update.
•iPod digital input (USB-A）x 1 ( available at "i" model )
•Digital input RCA x 1(192kHz/24bit), TOSLINK x 1(192kHz/24bit)