Mic Splitter box, any recommendations? I want it for comparing various preamps . Would this work: pro/ cons?
The Pro Co Sound MS3 3-Way Microphone Splitter Box is a portable utility used to split the low impedance signal of a microphone into 3 outputs. The result allows 3 microphone preamplifiers or mixer channels to be fed from one source. The MS3 features a single XLR female input, a single XLR male direct output, and 2 XLR male isolated outputs. The isolated outputs feature a ground lift switch which eliminates hum and electrostatic noise. Transformerless components feature additional electrostatic shielding for even further protection against noise.
Ground Lift Switch
The MS-3 features 2 isolated outputs with a ground lift switch that eliminate noise, plus a single direct output
Transformer Isolation
Transformer isolated circuitry eliminates hum and noise due to ground and radio frequency interference
Comments
Splitters do also introduce other problems like what happens whe
Splitters do also introduce other problems like what happens when there's a cable fault - in particular a short. In transformer coupled designs, you might lose a couple of dB if one of the outputs is shorted, but with with a simple parallel split, a short anywhere is 100% destructive. Unplugging a parallel split is also quite noisy - with loud pops and bangs, while the transformer version copes better.
http://www.sowter.co.uk/specs/8088.htm
This has the useful diagram showing how phantom is fed through - Sowters feature in lots of UK designed products - the UK equivalent of Jensen.