I have been looking for a high quality and very transparent 6 to 8 channel volume control with true balanced inputs and outputs, unity gain just so that impedance is maintained.
No need for multiple inputs.
So far I only found EMM Labs Switchman that meets these requirements, but it is actually a pre-amp with multiple inputs and quite expensive.
Is anyone aware of other products that would meet my requirements, or does anyone know of someone who could build such components?
No need for multiple inputs.
So far I only found EMM Labs Switchman that meets these requirements, but it is actually a pre-amp with multiple inputs and quite expensive.
Is anyone aware of other products that would meet my requirements, or does anyone know of someone who could build such components?
The MSB MVC almost meets the requirements, and is very good. It's 8 channel unbalanced, but you can pair channels to effectively make it balanced. Two units can be daisy chained/linked to give you a total of 8 balanced channels.
It's an active unit though, and I think can provide gain.
It's an active unit though, and I think can provide gain.
I have seen MSB MVC, but I do not get the idea of pairing channels, can you please explain in some detail? How would I control both consistently at the same time? And would not this approach suffer from unavoidable differences between two units?
I tried to make my own thread about something similar but different, and it wouldn't let me post it because "the same topic was already posted within 5 mins". So, I apologize in advance if I'm hijacking your thread.
I'm trying to make a 3 x 3.5mm stereo volume control that evenly and transparently controls all 6 channels with one knob. Also, I'd like to have switches that disable each input pair. Does anyone know how to do this or if something like this exists already?
I'm trying to make a 3 x 3.5mm stereo volume control that evenly and transparently controls all 6 channels with one knob. Also, I'd like to have switches that disable each input pair. Does anyone know how to do this or if something like this exists already?
Internally, the MVC uses CMOS DAC chips in 'multiplying mode' to do attenuation. What this means is that the audio signal is used as the VRef for the DAC chip, and a digital signal is used to set the attenuation value. i.e. the analog signal is run through the R/2R ladder based on the digital attenuation value provided as input to the DAC. It's a pretty clever approach, and means that balance across channels should be very good - basically just the chip-to-chip variation in the DAC which will be minimal. Since the attenuation is set digitally by the control unit, tracking isn't a problem - the MVC has a remote that globally controls attenuation across all channels.
In terms of splitting channels to balanced, I simply meant to split the xlr to 2 rcas, and run them into two inputs. the topology of the MVC will ensure that each phase is attenuated equally.
Two units would run $800 which isn't cheap, but also not horrible for what you get.
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