Nobsound 3-IN-1-OUT XLR Audio Switch, Balanced Audio Converter, 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-IN)

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But many people saying (online forums) it imparts its own distortion/sound signature to the signal ...and quality is flimsy So there is 10 dB of bleed from one input to another. The still gives us signal to noise ratio of 124 dB which is well beyond any dynamic range we would require. If you don't want to see such a degradation, just don't activate the other inputs at full amplitude. The MC103 is a fairly simple design, with the XLR ports connected to a rotating switch, allowing the user to select between three options.

As you can see, absolutely no change in distortion when using the switch. It’s behaving like a normal XLR cable here (as expected). One to route the mono output of my preamp in 2 different directions (one going to EQ; one going to Apollo) I run sound for a big band/swing band group with 2 vocalists. The vocalists each use a Shure SM-58S but they are not on stage all of the time; only 30% to 40% of our songs have vocals, so for a good portion of the show the mics are muted using their built-in switch. Now even though the Shures don't need it, phantom power is on because I also have a condenser mic on the piano. It is also worth warning that the switch is a ‘make before break’ design, meaning that as you switch between say X and Y, they will be temporarily shorted together. This is not an issue for the ‘1 in 3 out’ version, as shorting the inputs of amplifiers is no problem, but for the ‘3-in 1-out’ option, you will short the outputs of the two DACs together, which could potentially cause damage if they are playing at the time, and have insufficient short protection. It would really have been ideal to see a ‘break before make’ switch used in these products just in case. Option 3 will fix this. By using a switch, we keep the DAC connected to only one amp at a time, avoiding the effect of resistance (input impedance) in parallel, keeping our impedance matching ratio nice and high, and we don’t have to fumble with cables either. The only question is; will the switch degrade audio quality? It’s a passive device and in theory shouldn’t have an effect on audio quality in the way that an active device like a preamplifier might, but does that hold up in practice? Lets find out! DesignMany preamplifiers have inferior relay-based input selectors that can potentially degrade overall sound quality. By using a switch-box solution, you can entirely bypass those limitations. wondering if anyone has some advice on a high quality XLR a/b switcher for some simple studio routing.

Radial Relay Xo Balanced Remote AB switcher [RELAY-XO] : AVShop.ca - Canada's Pro Audio, Video and DJ Store The Douk/Nobsound MC-103 Pro does what you expect it to do: switch between three balanced inputs with essentially no degradation even when held up to the high standard of my audio analyzer. If you don't need gain/volume control or remote control, it would make a nice "pre-amp" replacement. One to switch between 2 different incoming signals into my Apollo (mono signal from preamp VS. mono signal from EQ)mi-fu noticed a problem with the one they received; one of the inputs was apparently damaged, and resulted in audible distortion. In my setup I need to be able to switch between the Gustard, the turntable and potentially a third XLR source. It would also be nice to have a pair of RCA inputs just in case. But it gets even more difficult since I also need to be able to toggle between two outputs. Those would be either my KGSSHV headphone amp or my Hypex nCore power amp. Many people as part of their headphone setup will have more than one amplifier, allowing them to swap between them for different flavours to suit different moods and genres. This gives us a result of 1666 Ohms! Lower than either of the two individually! This means that using a splitter in this setup, our impedance matching ratio would be less than ideal, even though either amplifier connected directly to the DAC would be fine. I initially planned to build a passive “switchbox” for my needs but gave up as soon as I had worked out the total cost (sigh). Decent quality XLR terminals and wires don’t come cheap and wiring is a nightmare.