Amplifier and Speaker A/B switcher

Follow up.  Paul McGowen does not know of a solid state speaker selector switching module.

I looked into them on ebay.  Including the TC-7220 2-Way Amp Amplifier  Speaker Selector Switch Switcher Splitter Combiner.

Several things bothered me, 

-Their Switches.  If there is going to be sound degrading it would be right there. Even on a 15amp toggle the contact surfaces are like millimeter.

-They tie the black negative leads together!  Switch the red positives.  Some solid state amplifiers use differential output drivers.  Their black negatives are NOT common or ground to anything but their red +.  They only like their + side.

-Internal wiring. Far from "audiophile".  Another choke on quality.  But an easy mod.

I could not see inside the TC-7220 to see if they keep the negative leads separate.  I also suspect their switch too.  Probably will work with the tube amp.  I don't know about the Schiit.

What to do?  Spend the bucks.  Buy what has mostly you need and modify.  Or build thy own from scratch.

I used one of those cheap switch boxes off Amazon and it worked fine.

I had a hafler xl280 and a Jolida brc 1000 tube amp hooked up to my acoustat 2+2’s.

if I was going to listen for just 20 min, I’d go sand amp, 30 or longer- tubes!

The problem is they accept very thin wire ( 16g? I don’t remember).

I had to connect thin wire to my 10g wire.

With that short a run ( few inches) and minor effect of switch, I detected no degradation in sound. I think I have a Niles unit.

I'm looking for a well made switcher that has the ability to switch between two amps (rca cables) and two speaker pairs (using banana plugs).

Check out the Niles SAS-1, it's obsoleted but can still be found regularly on eBay.

You can try Mapletree audio design, the SCC1 is what you need, I had one custom made by Al Freundorfer a few years back and it works perfectly. Welcome to Mapletree Audio Design

Of the switches mentioned, the Van Alstine is the only one supporting level matching. Without level matching there simply is no way a comparison can be valid.

As for colorations, any the switch might potentially introduce would be the same across the board, so effectively cancelled out when used for comparison purposes.

FWIW I used the Advent Speaker Comparator switch during my career, and installed the Audio Authority component switching system in the Definitive Audio showrooms in Seattle. Both of these were level matching devices, and extensie time was spent ensuring that the level match (set with pink noise and a sound level meter) was as close as possible. In both cases what was revealed was far greater than anything potentially lost, especially with speakers and speaker/amp pairing.