Outputs - balanced wiring or not?

I’m really confused by information I’ve seen about the UR-22C and its outputs, regarding whether they are “balanced”.

If I read the product manual, the outputs are described as electronically impedance balanced, and many online reviews simply call the outputs balanced.

So, if the circuit is impedance balanced, like the instruction manual claims, then there would be an advantage in using full TRS wiring to a studio monitor, since there would be an electrical impedance between shield and cold, and there would be some isolation between ground and the signal wires through this impedance.

But, the manual for the UR22C also indicates the TRS jack is shorted between shield and ring (ie no impedance) suggesting it is pointless using balanced wiring to studio monitors.

In another place in the manual, there’s example connection guidance, if you zoom in to the outputs, it’s vague whether you’re looking at TRS or TS connectors, though I’m guessing the pictures show TRS due to the point on the end of the connector.

To make things more frustrating, the UR44C manual suggests fully balanced outputs in its circuit layout - it’s schematic implies differential amps for the outputs.

What is the truth? Does anyone in Steinberg actually know? Or is the marketing speak as misleading as the “32-bit” specification for this UR-C range of products?

If anyone owns a UR-22C and can vouch for the real circuitry, I’d love to know the answer.

This might seem a very “techy” question, but sometimes these things do matter. And if the manual has contradictions, who exactly do you ask these days, in order to make a sensible purchasing decision?

The difference from balanced to unbalanced connection on the outputs are marginal for short length cables like the connection to some near-field monitors.

And this has nothing, absolutely nothing to do with the bit depth…

So buy some TRS cables since the price of them is nearly the same as for unbalanced (TS) cables with the same quality.

As far as I remember there are ordinary OP amps shown.

Why sensible? again buy TRS cables, nothing wrong with them.

Hi st10ss,

My enquiry is simply to determine the truth, does the UR-22C have balanced outputs or not. Whether the difference is marginal, depends on whether this matters for your needs. If this was not a big deal, why is there balanced outputs on some line devices and not others (e.g. 73 and 88 key Yamaha stage pianos, but not on the 61-key YC model?)

It also has a LOT to do with the bit depth. You see, everywhere on the Steinberg sales literature, the UR-C range says ‘32-bit’, even on the front of the product. Yet, despite this, nobody has ever been able to take 32-bit recordings into their computer from this interface. Because, the literature is misleading - you can’t make 32-bit recordings with these interfaces, the only conclusion anyone has been able to make is that somehow the audio is sampled internally at 32-bit and then downsampled to 24-bit to the computer through the interface. So Steinberg have set a precedent for making bold statements about their products which were, at best, misleading, at worst, lies.

The schematics for the UR-44C, in the manual, have two op amps for each output channel, and a separate ground connection. This usually means differential output. The schematics for the UR-22C have a single op amp and the cold / shield connections on the TRS appear shorted. You can’t have both impedance matching output and a shorted connection.

There are enough issues to navigate around for audio interfaces without manufacturers being vague. There should be no defence for manufacturers being vague about products they design and then sell - it’s easy to make specifications for a product because the specifications are part of the design.

Saying ‘buy TRS cables’ without being able to say whether they provide a material advantage sounds like a “snake oil” salesman approach to me. It’s a flippant answer to a serious question.

All I want to know is if there is a balanced outputs on this device or not, before buying one. It’s a trivial thing for someone to check who owns the interface in question, you’d measure the resistance between shield and ring on the output (using a meter), if this is a dead short then the outputs are unbalanced, otherwise there is some isolation / common mode rejection circuitry on the outputs.

I don’t have a 22, I have a 816. But if you use unbalanced cables to your active studiomonitors, chances are high that you willl hear a noise in your monitors coming from the computer. WIth balanced cables this will be quiet.

… sorry that is… balanced connections and bit depth… ahmm not related in any way

This is simply wrong. Balanced cabling is not the cure to all noise problems.
Balanced cables avoid noise introduced to the cable connection only.

What I mean is that unbalanced cables(also short ones) from the interface to the active monitors nearby a computer can pickup interference, unbalanced cables mostly not. That was at least in my case. It’s not indeed not the solution to every problem.

That’s correct.