INT202/INT203
Ultimate CAS Interface
终极电脑音响系统接口
究極のD/Dコンバーター
ENGLISH VERSION / 繁體版本 /简体版本 / 日本語
In addition the audio volume / absolute phases can be controlled in the digital domain via an infrared remote control unit. With the volume control feature it can also replace a preamplifier. The INT202 is the ideal bridge between traditional audio system with latest computer as source on files playback.
The internal circuit design of INT202 shows swiss made Weiss quality level. The firewire connection uses internal master clocks which located extremely close to the firewire DICE circuit and AES/EBU output connectors. This ensures the highest precision timing and work as the master clock for computer as source system.
Features of the INT202:
- Two Firewire 400 sockets. Firewire 800 can be connected via an appropriate cable
- Can be powered from the Firewire bus or from an optional power supply
- Two XLR output sockets
- Two RCA output sockets
- Operates up to 192kHz sampling rate
- Single wire operation at sampling rates of 44.1, 48, 88.2, 96 kHz
- Single or dual wire operation at sampling rates of 176.4 or 192 kHz
- Infrared remote control (optional) for volume and absolute phase
- Volume control is dithered to avoid quantization distortion
Features of the INT203:
- Two Firewire 400 sockets. Firewire 800 can be connected via an appropriate cable
- Can be powered from the Firewire bus or from an optional power supply
- One XLR output socket, one XLR input socket
- One RCA output socket, one RCA input socket
- Operates up to single wire 192kHz sampling rate
- Infrared remote control (optional) for volume and absolute phase
- Volume control is dithered to avoid quantization distortion
- Bit transparency check feature for testing the computer player software
Driver Software:
- Supports Windows XP, Vista, Windows 7
- Supports OSX 10.5 and higher
Applications:
- Interfacing any D/A Converter to a computer for high quality soundfile playback.
- Interfacing any digital audio equipment with a AES/EBU or S/PDIF input to a computer
- High quality volume control and absolute phase control of audio played back from a computer.
Level Control:
With the (optional) Remote Control unit the gain can be controlled between 0dB and –60dB: From 0dB to –20dB in 0.5dB steps and from –20dB to –60dB in 1dB steps. In the 0dB gain position the INT202 is fully bit transparent, i.e. it does not change the data in any way. In all other gain positions the output signal is properly dithered to a wordlength of 24 bits. All units are shipped with a 0dB gain setting and non inverting phase setting, i.e. when there is no remote control included the unit is in fully transparent mode.
Absolute Phase control:
Pressing the mute switch for a few seconds toggles the operation mode to phase control. In that mode the ^ key switches the phase to 0° and the v key switches to 180° (i.e. inverted phase). Press the mute key for a few seconds again to get back to the volume control mode. The phase set before is retained when switching back to volume control mode. When changing the phase with the ^ and v keys you notice a short muting of the audio. This prevents from any clicks caused by the phase switching and also is an indication that the switching has actually taken place. If you already owned a high quality DAC and do not want to buy a new one, the INT202 is your best option to use computer as source.
INT202 can receive power from the Firewire Bus or optional AC adapter. The remote control is same style as ATT202 remote control in black colour. There is protective plastic film which can be take off on the remote control.
This video shows the Weiss INT202 latest version TRSP (Bit Transparency Check) function. When the TRSP Check is ON, it checks the computer firewire playback bit pattern with our supplied WAV files. If the data is bit transparent, the LED is flashing. When the firewire playback is not transparent, it stops flashing (for example in this video 00:11-00:15, the iTunes volume is not at maximum)
More in depth information can be read from here
Weiss INT202 manual (April, 2010)
Hi Kent,
You stated in your article:
“The outputs can be operated in single wire up to 192 kHz sampling rate or in dual wire at the 176.4 / 192 kHz rates.”
But later in the specification:
“Single wire operation at sampling rates of 44.1, 48, 88.2, 96 kHz
Single or dual wire operation at sampling rates of 176.4 or 192 kHz”
1. Can you clarify that if I use single wire SPDIF, what sample rates are supported?
2. My Naim DAC has 4 SPDIF inputs, will it support dual wire?
3. What would an external power supply bring to the table? Will it improve sound quality?
4. What do you think of a 5M coaxial connection to the DAC? Will the length degrade sound quality?
5. My computer requires 4-5M cable to the DAC, is it better to use (a) long USB cable, short coaxial cable OR (b) Short USB cable, long coaxial cable?
6. Is the INT202 at AFI-1 level for only stereo playback?
Thanks in advance. I enjoyed your DAC2 a lot, and want to enjoy the same CAS convenience and sound quality with the INT202.
Hello John,
1) SPDIF supports all sampling rates from 44.1, 48, 88.2, 96, 176.4 to 192kHz
2) Naim DAC supports 192kHz on single wire, you just need 1 x SPDIF. Radar iSquare showroom is using an INT202 to connect on Naim DAC for demo. You can feel free to check out the performances.
3) The external power supply is useful when you always unplug the firewire, the power supply keeps the INT202 on. It will not improve or degrade sound quality.
4) 5M Coaxial is completely okay on “my” book.
5) For USB device, obviously is longer coaxial and shorter USB is better. For Firewire, it depends since the INT202 is the master clock.
6) The INT202 is very similar design at AFI-1 level, it works at stere playback only.
7) More features will be added to INT202, we will announce when the next shipment is arrived.
I am using berkeley DAC.
The Berkeley always showed wrong syn frequency when connected with INT 202 to MacBook Pro. But the SQ was not changed. Can you suggest any solution to this problem?
By the way, the berkeley showed accurate syn frequency with my transporter.
Hello cy100, this has been discussed on few forums (computeraudiophile.com) and my own (designwsound.com/dwsblog). The INT202 takes sometime to gain lock after a sampling rate change due to the low jitter PLL. It seems that the Berkeley measures the sampling rate only for a short timeframe when the sync changes for this error. However the sound should not be affected, only the display.
Kent:
Hi Kent, for those of us holding off on purchasing the Int202, can you comment on the nature of any forthcoming features/improvements to the interface? The recently added TRSP (Bit Transparency Check) function is a very nice feature, wondering if there is more to come? Just trying to determine when the best time to purchase, I do not want to purchase if additional significant feature will be added.
Thanks
tom
Hello Tom, Thanks for your comment. I was meant about the TRSP Check function. I have no information that anymore additional significant feature on INT202.