DA96ETF
- DA96ETF-100.png (20.83 KiB) Vist 10139 gange
- DA96ETF-100-rear.png (22.28 KiB) Vist 10139 gange
Power supply: external, 5V/100mA (4.8 ... 5V5), connection USB-B (large). Matching low (ground-loop) noise, power supply is included.
Supply current:
[email protected] (125 milliwatts), 35mA@96 KHz (175 milliwatts).
Digital audio interface: ElectroTos (Standard Toslink optical socket for use with / ElectroTos plug).
Supported protocol: ElectroTos low jitter protocol.
Note: the D/A96ETF does not support standard Toslink protocol, it will only produce noise when attempting to drive it with standard Toslink sources.
The DA96ETF pairs with U192ETL or UPL96ETL. These support the ElectroTos low jitter protocol.
-> ElectroTos low jitter protocol eliminates -unwanted- jitter in digital audio source, digital audio interlink, and all DAC circuits even when significant crosstalk is present. It has to be generated directly by software.
Sample rate support: 44.1, 48, 88.2, and 96 KHz.
Bit depth: automatic (ElectroTos protocol). U192ETL and UPL95ETL support 24 bit.
Internal digital audio interface system for the SIPO: (serial to parallel converter), 4 wire ElectroTos, ELE, ESC, ECK, and EDA.
Internal digital audio interface D/A converter: parallel interface.
Standard digital audio protocols are no longer used / generated anywhere in the DA96ETF.
D/A converter type: Fractal multi-pattern converter, 32 bit core / channel (this type of converter is -completely- different from all existing audio D/A converters).
Fractal multi-pattern converters offer extreme long term accuracy (with given component tolerances), low output impedance (375 OHms), and extremely low digital interface switching noise because of the parallel data interface (highest switching frequency equals the sample rate / ELE latch signal).
System: unfiltered NOS (fully passive output circuit). By using 88.2 or 96 KHz, 2 x oversampling can be obtained.
Output voltage: 3V6pp, DC-coupled.
Output connector: RCA, gold-plated, shielded connector soldered directly into the PCB for lowest possible noise / losses.
Output impedance: 375 OHms, can directly drive 250 OHms Beyerdynamic DT-990 studio or comparable headphones.
Recommended lossless volume control: Shunt volume control (shunt only), 375 OHm output impedance is used as fixed series resistor for the shunt volume control. This shunt regulator can be placed in parallel with Beyerdynamic DT-990 headphones for lossless volume control. Typical couput impedance 0.38 OHms (-60dB) ... 375 OHms (0dB). This way headphones can be driven without using any active linear circuit in the audio signal path, just a digital latch and a resistor network.
The DA96ETF consists of a logic board that contains all connectors, supply voltage filters, voltage regulators, ElectroTos receiver circuit, SIPO and indication LED (lock LED). The two Fractal multi-pattern D/A converters are located on a piggyback board that is plugged on top of the logic board, there is no wiring (very compact module, shortest possible connections).
https://www.diyaudio.com/forums/digital ... 42818.html