Tag Archives: passive switch

How to make reliable A/B comparison tests between 2 headphone amps, 2 DAC, or 2 interconnect cables ?

Here is a small, simple and passive device, called “Passive Switch Box” (available in two forms: PSB2-1 and PSB2-1R), to simplify your audio comparison tests (A / B tests) between 2 audio components such as 2 headphone amplifiers, 2 DAC, 2 sources or even 2 interconnect cables.

Once correctly connected with your audio components, the PSB2-1 and PSB2-1R will enable easy switching of the 2 connected inputs using a single toggle switch.

PSB2-1 Switch between 2 headphone amplifiers

PSB2-1 Switch between 2 headphone amplifiers

The PSB2-1 and PSB2-1R are very simple to use, and due to their simple but yet high quality internal connections, they are completely transparent and doesn’t modify the input signals. The differences you may hear between “A” and “B” are due to the different devices you are comparing, so trust your ears, and decide for yourself if “A” is better than “B” !

In order to optimize the use for different A/B tests possibilities, the Passive Switch Box is available in 2 different forms with different inputs and output terminals (1/4″ jack or RCA): the PSB2-1 and the PSB2-1R. (click here for more information)

Here are 3 examples: (click on the desired link below)

  • How to make reliable A/B comparison tests between 2 interconnect RCA cables ? Use the PSB2-1R with the ICTester Box, or the PSB2-1 with adapters [RCA to 1/4″ jack] and the ICTester Box (available soon…)

Some wiring diagrams:

Passive Switch Box (PSB2-1) - Switch between 2 headphone amplifiers ( A/B test )

Passive Switch Box (PSB2-1) – Switch between 2 headphone amplifiers ( A/B test )

Passive Switch Box (PSB2-1R) - Switch between 2 DAC ( A/B test )

Passive Switch Box (PSB2-1R) – Switch between 2 DAC ( A/B test )

Passive Switch Box (PSB2-1) - Switch between 2 DAC ( A/B test ) using adapters

Passive Switch Box (PSB2-1) – Switch between 2 DAC ( A/B test ) using adapters

You can see all the products currently in stock and the special offers by visiting this page.

Don’t hesitate to contact me for any information. Worldwide shipping.

 

Advertisements

How to make reliable A/B comparison tests between 2 headphone amplifiers?

Passive Switch Box PSB2-1 to switch between 2 headphone amplifiers (A/B comparison tests).

(the PSB2-1 can also be used to switch between 2 DAC via their RCA “line out” or other sources, just connect the PSB2-1 using the appropriate cables and/or adapters. more information here)

Passive Switch Box (PSB2-1) - Switch between 2 headphone amps

Passive Switch Box (PSB2-1) – Switch between 2 headphone amps for A/B tests

In order to make reliable A/B comparison tests between 2 headphone amplifiers, the PSB2-1 must be connected between your 2 headphone amplifiers and your headphone as shown in the diagram below. All connections are done using regular 1/4″ jacks.

  1. Connect the headphone output jacks of the 2 amplifiers respectively to the A and B jack INPUTS located on the back of the PSB2-1, using [stereo 1/4” jack plug – stereo 1/4” jack plug] cables (High quality Klotz cables, with Amphenol Nickel plated 1/4″ plugs can be provided optionally, or make your own cables)
  2. Connect your headphones to the 1/4” OUTPUT jack on the front of the PSB2-1.
  3. Use the toggle switch to switch between the A and B amplifiers signals. It is very important that you match the levels of the 2 headphone amplifiers carefully, in order to have a reliable comparison and A/B test.

The sonic differences (if they exist) between the connected headphone amplifiers will be easily apparent as we can switch from one to the other instantly using the toggle switch, without any other distraction (no need to stop listening and pull and plug cables…, just switch between A and B with the toggle switch…)

Only high quality components with internal silver plated contacts are used in the PSB2-1 (toggle switch and all 1/4” jack connectors).

PSB2-1 Switch between 2 headphone amplifiers

PSB2-1 Switch between 2 headphone amplifiers for A / B comparison tests

Passive Switch Box (PSB2-1) - Switch between 2 headphone amplifiers ( A/B test )

Passive Switch Box (PSB2-1) – Switch between 2 headphone amplifiers ( A/B test )

  • How to make reliable A/B comparison tests between 2 interconnect RCA cables? Use the PSB2-1R with the ICTester Box, or the PSB2-1 with adapters [RCA to 1/4″ jack] and the ICTester Box

You can see all the products currently in stock and the special offers by visiting this page.

Don’t hesitate to contact me for any information. Worldwide shipping.

How to make reliable A/B comparison tests between 2 DAC (line out RCA) ?

Passive Switch Box PSB2-1R to switch between 2 DAC (RCA “line out”) (A/B comparison tests).

(it is also possible to use the PSB2-1 to switch between 2 DAC via their RCA “line out” using the appropriate cables and/or adapters. more information and wiring diagram in the table here)

Passive Switch Box (PSB2-1R) - Switch between 2 DAC or 2 sources

Passive Switch Box (PSB2-1R) – Switch between 2 DAC or 2 sources RCA “line out”

In order to make A/B comparison tests between 2 DAC with the PSB2-1R (or PSB2-1 with adapters), it is necessary that the two DAC have a “line out” analog RCA output. The PSB2-1R must be connected between the 2 DAC and the amplifier as shown in the diagram below. All connections are done using [RCA – RCA] interconnect cables.

  1. Connect the DAC analog “LINE OUT” RCA (Left & Right) of each of the 2 DAC respectively to the A and B sets of RCA INPUTS located on the back of the PSB2-1R, using [RCA – RCA] interconnect cables. (High quality Klotz cables, with Neutrik gold plated connectors can be provided optionally)
  2. Connect the RCA OUTPUT on the front of the PSB2-1R to the analog “LINE IN” RCA set of the amplifier.
  3. Use the toggle switch to switch between the A and B DAC signals

The sonic differences (if they exist) between the connected DAC (or any other audio components connected via their “line out”) will be easily apparent as we can switch from one to the other instantly using the toggle switch, without any other distraction (no need to stop listening and pull and plug cables…, just switch between A and B with the toggle switch…)

Only high quality components with internal silver plated contacts are used in the PSB2-1R (4PDT toggle switch with silver plated contacts switching also the grounds, gold plated RCA connectors).

Passive Switch Box (PSB2-1R) - Switch between 2 DAC ( A/B test )

Passive Switch Box (PSB2-1R) – Switch between 2 DAC ( A/B test )

  • How to make reliable A/B comparison tests between 2 interconnect RCA cables? Use the PSB2-1R, or the PSB2-1 with adapters [RCA to 1/4″ jack]

You can see all the products currently in stock and the special offers by visiting this page.

Don’t hesitate to contact me for any information. Worldwide shipping.

How to make A/B comparison tests between 2 DAC (line out RCA) ? : PSB2-1 with adapters

The Passive Switch Box PSB2-1 was designed primarily to switch between 2 headphone amplifiers (A/B comparison tests), but with some adapters (and/or special cables) it can be used to switch between 2 DAC or 2 sources (RCA “line out”).

Note : For high quality switching and A/B comparison tests between 2 DAC or 2 sources (via their RCA “line out”), it is recommended to use the PSB2-1R which is equipped with 3 sets of RCA connectors, thus simplifying and reducing the connections of the DAC and amplifier, because no adapter is required. => How to make reliable A/B comparison tests between 2 DAC (line out RCA) – with the PSB2-1R

How to use adapters with the Passive Switch Box PSB2-1 to switch between 2 DAC (RCA “line out”) (A/B comparison tests).

Passive Switch Box (PSB2-1) - Switch between 2 headphone amps

Passive Switch Box (PSB2-1) – Switch between 2 DAC or sources RCA “line out”

In order to make A/B comparison tests between 2 DAC with the PSB2-1 , it is necessary that the two DAC have a “line out” analog RCA output. The PSB2-1 must be connected between the 2 DAC and the amplifier as shown in the diagram below. All connections require the proper interconnect cables and/or adapters.

  1. Connect three [1/4″ stereo jack plug – RCA stereo] adapters (or your own special cables) to the 1/4″ headphone jacks of the PSB2-1.
  2. Connect the DAC analog “LINE OUT” RCA (Left & Right) of each of the 2 DAC respectively to the A and B sets of the 2 adapters RCA INPUTS located on the back of the PSB2-1, using [RCA – RCA] interconnect cables. (High quality Klotz cables, with Neutrik gold plated connectors can be provided optionally)
  3. Connect the RCA OUTPUT of the adapter on the front of the PSB2-1 to the analog “LINE IN” RCA set of the amplifier.
  4. Use the toggle switch to switch between the A and B DAC signals

The sonic differences (if they exist) between the connected DAC (or any other audio components connected via their “line out”) will be easily apparent as we can switch from one to the other instantly using the toggle switch, without any other distraction (no need to stop listening and pull and plug cables…, just switch between A and B with the toggle switch…)

Only high quality components with internal silver plated contacts are used in the PSB2-1 (3PDT toggle switch with silver plated contacts, 1/4″ silver plated jacks).

Passive Switch Box (PSB2-1) - Switch between 2 DAC ( A/B test ) using adapters

 

  • How to make reliable A/B comparison tests between 2 interconnect RCA cables? Use the PSB2-1R, or the PSB2-1 with adapters [RCA to 1/4″ jack]

You can see all the products currently in stock and the special offers by visiting this page.

Don’t hesitate to contact me for any information. Worldwide shipping.