> I would like to use the Tascam because it offers very good AD- and DA-conversion
The device has been introduced 2013 to the market and then you can be sure, that converters have been used for this design, which are already available on the market and which are proven. So I assume that these Burr Brown converters are at minimum 8-9y old. So I do not get this point from you why you want especially this device for AD/DA conversion.
Current RME converters from RME should have better specs.
> and yes, from time to time I want to record some tracks on my very old-school tape deck because
> in our classic car we can only play tapes ;-) And the Tascam really offers various inputs and outputs.
The same is applicable for the UFX II and UFX+.
And I am still wondering, why you want to spoil the around €1000 for the Tascam, IF you intend anyway to get an UFX * with DURec. Sorry, but this does not make any sense to me.
> What would be the problem using electric SPDIF- and AES/EBU-connections like I have shown in my sketch?
1. of all again my point: wastes money for a device which is most likely not required in any way
2. instead of making the UFX II the center of your recording solution you have always the Tascam in between the UFX II and your HiFi
3. because the Tascam does not support optical SPDIF. Instead of this you need to use coaxial SPDIF without galvanic isolation, which is more sensitive to outside electrical influences / hum.
With the UFX II you can do everything.
Use it completely standalone or with a PC/Laptop ....
Store / Recall up to 6 prepared configurations / routing, for every situation that you need.
You can record any input with DURec to normal medium.
You can record with a DAW, with simply a recording program, with Global Record from RME (lightweight recording solution).
You have already two very good phones outputs and plenty of I/O ports that are of good use.
You have two options in terms of D/A conversion
a) use the D/A converters of the UFX II and connect it to the balanced ports of the NAD or
b) use the D/A converters of the NAD .. put maybe this TOSLINK switcher in front of it and then you can
let the NAD make D/A conversion for UFX II, TV, bluray
c) or even a mix of the two ... whatever you want.
You can even use a smaller RME recording interface like BBF Pro FS or UC or UCX without DURec.
Then simply use RME Global Record to record something or a music player.
This you can route to analog outputs and there you can connect a cassette deck to make recordings for your oldtimer.
But whatever comes to my mind .. I see absolutely no necessity for the Tascam device. It makes no sense to me.
I see no advantage by getting it. Or you think you need or simply want such a device.
And even then I would think about simply to connect it to a recording interface like a tape deck.
I would digitally connect recording interface and your NAD by TOSLINK cable (optical SPDIF).
Eventually get the TOSLINK switch additionally.
And then I would let your NAD perform the D/A conversion.
It can perform it surely as nice as the Tascam.
But then you have galvanic isolation in place and the Tascam does not need to stay on all the time.
You should also check what all needs to be connected to the recording interface.
Maybe BBF Pro is to small in terms of analog I/O ports.
Maybe UC or UCX would be better.
Most flexible UFX II with DURec.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub14
