I bought this Lead Foot ABY to switch between - and mix together - the left and the right channel on my 22500 Loper's stereo output.
To test channel interference, I used the A and B 1/4" jacks as inputs in which I sent a 0 dB (1 kHz) signal. I connected one of the parallel 1/4" jacks as output to a HI-Z input on an Audio Interface to measure signal strength. There was no change in the signal on the selected channel, but there was a crosstalk of -28dB from the non-selected channel. When A and B input were linked together, the sum of the signals was +6dB.
The buttons are fitted with just 4 cm distance between them which means that you need to be a bit accurate not to press the wrong button by misstake. The advantage is that you can easily press both buttons at the same time if you need to.
When both A and B are active at the same time, both LEDs are illuminated. Therefore - if you forgot the previous A/B setting, you can not determine which of the A and B jacks that becomes active when the Y-connection is disabled. (This could have been encoded with the use of multicolor LEDs.) The LEDs are small and sits deep in the panel and is therefore a little difficult to read in bright light and/or at a large viewing angle, but mostly this is no problem.
There was no problem to get the 9V battery in and out of the box. The LEDs are activated whenever a plug is inserted in one of the "parallel" in/out jacks.
The Lead Foot ABY switch pedal does what it is meant to do. Feels robust, and has a good price
I bought this item looking for a low cost switch in order to play with two amps simultaneously or separately, or to connect two guitars in one amp. I choose this product from Thomann site. My first impression were quite nice.The outer part is made of metal and the construction is solid. The two buttons work very well in continious and hard pressures without blocking. If you want to set a battery inside (which is used only for the led light operation), you will find some difficulties to put the cover back in the right position. Anyway, considering the price, I think it is a very advantageous purchase.
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