Don't worry about the vinyl. I am more concerned with other analogue inputs such as an FM tuner et cetera. It would be nice to (still) not have a preamplifier but to be able to use your active buffer for more than one input. So if I was listening to some music through my DAC and then wanted to tune into a live FM concert it could be done without changing cables and all that associated messing about.
I could sort out a remote volume control whether that be a high end passive attenuator or something with the Muse chip and then I would have the flexibility I need in that department.
Reading between the lines above it seems as though you don't think more than one input could work optimally for SQ...is this true?
I could sort out a remote volume control whether that be a high end passive attenuator or something with the Muse chip and then I would have the flexibility I need in that department.
Reading between the lines above it seems as though you don't think more than one input could work optimally for SQ...is this true?
Anthony, not explicitly. You guys just come up with more than I planned for this.
Sorry Peter...I hope you understand that I am just asking for what will suit my situation...and that this seems to be the time to do it. If I can get the basis for a two input - one output B'Ass with or without volume control I can modify it to suit my purposes...but a single input B'Ass does not work for me because I want to listen to FM as well as my NOS1.
Example about the volume : If you ask me I say "undoable". I mean, if it is not allowed to be detrimental to SQ, forget it.
However, the NOS2 design solved that, with weeks of design. Think voltage references and the output responding to that because of the design itself (which explicitly took that into account). This does not do that.
And on a side note and FYI : applying any volume in the differential domain is a challenge in itself, because there should be no deviation between the two differential channels at all (while L/R is easliy allowed to deviate 0.5dB (I say !)). So with differential any volume control is almost a no-go, unless we step back 10 years (of say Phasure) and don't know much about anything BUT that our sound is not the best of the world. Understand ?
I think I understand your position. I also think that I can get a good sounding passive or active volume control sorted for myself if you are not willing to do it, so that is not an end game. But two inputs for the B'ass would be so, so convenient in my situation...
This is also how I claim to have learned so much from the NOS2 project, never mind no NOS2 is there. I can tell right now within seconds all the things which will *not* work. But behind such seconds is weeks of thinking ...
All what is "switch" will be too high-Ohmic and therefore no good in the input. One thing I am not so very much experienced with : we are already at a reasonable (line) level. So it is not in advance of a DAC where nothing is allowed regarding switches and such. Anyway, what I would allow for almost sure is just two inputs in parallel. Maybe this is harmful, maybe it is already world-wide known that this is not allowed, but without examining it, I say it may be OK.
Two input would be fantastic...two BNC and I could change the output of the FM Tuner to BNC also.
You know, I am afraid that we are "designing" ourselves more than really necessary, and that any 700 euro device as of now, becomes 1200 euros. Maybe that's OK, but ...
1200 euros works just fine for me. A used version of the active buffer I am searching for (they seem very rare used) will go for more than that, and it does just the same thing as your B'Ass box...current...but with multiple inputs and a fantastic passive attenuator.
But anyway I now realize that I also have a digitally controlled volume ready on a PCB (f*ck, what did I not do the past 4 years ?!?). It is only that I never really worked with it (so I have the PCB and that is all -it also requires uC programming). But I recall that this too was actually a bit too difficult and it requires some sort of calibration (the differential problem, described above).
That solution sounds excellent, if you can pull it off.
Hey, I am not against anything. But I had one purpose with it and this was just better sound from the NOS1(a). I think we now must be careful not to make it unnecessary expensive for some. But I listen ...
Much appreciated Peter. Perhaps two versions: one as you propose just for single analogue input systems; a second unit for multiple analogue inputs, perhaps with remote volume control.
PS:
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But anyway I now realize that I also have a digitally controlled volume ready on a PCB
... which was for the DSD board I also have and never even bought one resistor for. So tempt me and that is in the same box too. Especially because that is voltage output and requires a buffer.Anything else ?
I can't think of anything else.