What are the Dwarf Input and Output technical specifications

I am aware of what is on the wiki, which shows this for the Dwarf

but I am looking for more detail (To aid interfacing with other devices/gear), for example as found with

BOSS GT-1000 Core

Hotone Ampero Stomp II

Zoom B2 Four

Is there such a page that I’ve just not yet found? If not, can the details be posted up here please :slight_smile:

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+1 for this. I’m looking into building a ‘post-amp’ to go immediately after my dwarf in the pedal chain; it would be useful to know how much headroom it needs to have.

On a side note, is there a typo in the audio input specs?

2x independent mono audio inputs with: Unbalanced asymmetrical TRS connection
[Dwarf Technical Specs - MOD Wiki]

If the inputs are mono, unbalanced, and asymmetrical, what is the ring doing in the TRS connection? Or have I misunderstood something?

I think I read an explanation in some other thread saying that the plug really has a Ring but that is not connected to anything.
This means if you happen to plug in a stereo cable with a stereo source, you only get one channel “into the Dwarf” - as opposed to getting a mix of both signals which would happen if it had only TS connection.

I’m not sure, but wouldn’t feeding a balanced signal while only having TS input lead to “no signal” getting in because you get the positive and negative signal on the same connection at the same time, cancelling each other out?

Thanks @Casanunda, I went looking and found @Jan’s explanation of it here:

TRS simply refers to the connector type. This becomes important information when connecting a microphone for instance, as with a TS input one needs to make sure the “cold” connection of the mics XLR goes to to the sleeve of the jack. Having TRS inputs makes the Dwarf compatible with XLR to TRS cables, and not just XLR to TS cables which are less common.

I take that to mean that the ring of the TRS input is shorted to the sleeve, i.e. grounded.

wouldn’t feeding a balanced signal while only having TS input lead to “no signal” getting in because you get the positive and negative signal on the same connection at the same time, cancelling each other out?

I don’t think so… with a TRS jack into a TS socket, the positive signal on T should pass through OK. The question is whether the socket’s S connects to the jack’s R or S. Whichever one it connects to is going to be grounded while the other would be floating. I’d expect to hear a signal in either case (although possibly with other issues like increased noise or ground hum?)

Which brings us neatly back to the use of the TRS socket with R grounded - it makes sure that nothing is left floating, whichever type of jack is used. Neat solution!

.

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