Quote from: zerodeefex on April 18, 2013, 03:16:56 AM

Does anyone have balanced XLR switch recommendations? I have 2 sources and 3 amps that need to be driven. I'm local to Goldpoint and emailed their sales team to see if they do custom work. Otherwise, I'll have to make up some time for a DIY project.

http://www.audiopile.net/products/Electronics/MST-412_rack_splitter/MST-412_cutsheet.shtml

i'm not sure you could DIY that any cheaper. 

Quote from: fishski13 on April 19, 2013, 03:07:35 PM

Quote from: anetode on April 18, 2013, 05:46:50 PM

Quote from: zerodeefex on April 18, 2013, 03:16:56 AM

Does anyone have balanced XLR switch recommendations? I have 2 sources and 3 amps that need to be driven. I'm local to Goldpoint and emailed their sales team to see if they do custom work. Otherwise, I'll have to make up some time for a DIY project.

http://www.audiopile.net/products/Electronics/MST-412_rack_splitter/MST-412_cutsheet.shtml

i'm not sure you could DIY that any cheaper.

Just the jacks and enclosure alone! 

Any reason to get fancy with the transformers etc.. for this application?  Seems like adding a bunch of un-needed in the signal path.

i totally missed the isolation TXs  .  for home audio, i'm not sure how concerned one needs to be over galvanic isolation with only 2 sources and 3 amps.  i run both balanced and unbalanced outputs from my BM DAC1, into 3 different amps via loop-outs without any noise or ground loop problems.  how manufacturers treat pin1 in a balanced connection isn't uniform either. 

i only have one amp (unbalanced) that has the PS in the same chassis as the signal circuits, but i have a ground-loop breaker installed.  ground lift switches are a nice option to potentially solve noise or 50/60Hz hummm, but the downside is that you can lose some RFI rejection by not having the signal tied to chassis.

possible sonic changes from having input TXs is not a can of worms i want to open.  i'm sure Steve or Doug could enlighten more on that topic. 

edit: i forgot to mention, if a DAC is connected to two different amplifiers via a loop-out, the DAC will 'see' the combined resistaces of the pots/attenuators in parallel.  while most modern DACs should be able to drive 7-10K, you must be cognizant of the total parallel resistance - i.e. 2x 10K pots may be asking too much current from the source.  i usually stick with 25K pots for this reason. 

The Sansas are so cheap and easy to modify that for all that they offer they're a no brainer.

The Sansas are so cheap and easy to modify that for all that they offer they're a no brainer.

Modify? What do people do with them?