SKU: 41552767512

Input Selector

Sale price$129.60 Regular price$144.00
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

Input SelectorInventory Reduction Sale: The Input Selector is on sale while supplies last. The Input Selector is a relay based input selector which supports the selection of one of six stereo inputs. It can be used as a passive preamp by adding a volume control, such as the Selector Switch & Volume Control. An active preamp, or a preamp with gain, can easily be implemented by adding the Universal Buffer. This will result in a preamp with six stereo inputs and both

Inventory Reduction Sale: The Input Selector is on sale while supplies last.

The Input Selector is a relay-based input selector which supports the selection of one of six stereo inputs. It can be used as a passive preamp by adding a volume control, such as the Selector Switch & Volume Control. An active preamp, or a preamp with gain, can easily be implemented by adding the Universal Buffer. This will result in a preamp with six stereo inputs and both balanced and unbalanced outputs. Balanced inputs can be implemented with the Universal Buffer as well.

The control input to the Input Selector is compatible with 3.3 – 5.0 V CMOS and TTL logic levels. This makes the Input Selector easy to interface to the many popular micro controller circuits, such as the Arduino. 

The 45 × 112 mm gold-plated PCB is made in Canada. 

Technical Documentation

  • Features
  • Specifications
  • Performance Graphs
  • The features of the Input Selector are listed below.

    • Relay-based input selector with six stereo inputs.
    • High channel separation and excellent off attenuation. 
    • On-board 5 V regulator powers the relays.
    • Relay Saver technology reduces the power dissipated in the relay coils by 36 % once the relay has switched, thereby enhancing the reliability and longevity of the circuit. 
    • Gold plated relays, designed specifically for small-signal use.
    • Connection to volume control by 10-pin, gold-plated connector.
    • 3.3 – 5.0 V compatible logic control inputs with ESD protection for audio input selection.
    • Gold plated PCB. Made in Canada. The circuit module arrives fully assembled and ready to go.
  • The specifications of the Input Selector are tabulated below.

    Parameter Value Notes
    Number of Stereo Inputs 6
    Power Supply Voltage 6.0 – 25 V
    Power Supply Current 17 mA
    Input Impedance
    10 kΩ

    With recommended volume pot.

    (Note 1)

    Max. Output Impedance
    2.5 kΩ

    With recommended volume pot.

    (Note 1)

    Channel Separation 113 dB 1 kHz, incl. volume control
    Off Attenuation > 127 dB 1 kHz, incl. volume control
    Dimensions 45 × 112 × 14 mm
    Weight 46 g
    Note 1: The input impedance of a passive preamp is equal to the resistance of the volume pot. The maximum output impedance of such a preamp is equal to one quarter of the resistance of the volume pot.
  • The amplitude response and gain flatness of the input selector is shown below. As you would expect from a passive preamp, the gain is completely flat and slightly below unity due to the load of the volume pot on the signal source. The bandwidth of the Input Selector exceeds 200 kHz.

    More importantly, the left-to-right channel separation is very high as shown below. 

    In addition to providing good separation between left and right channel, the Input Selector must also have good isolation between inputs. Otherwise the signal from an unselected source can leak through to the output. The measurement below shows the attenuation between an unselected channel and the selected channel, otherwise known as the off-attenuation. This attenuation is very high, which results in no bleed-through between signal sources.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 41552767512

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Maryjcm1
Battle Creek, US
★★★★★ 3
Dog loves it; but some poor construction
My small dog instantly loved this toy! I like the squeaker, bounciness, and options for different kinds of movement in the interactive play. It also recharges fast. However, I have two downsides: While my dog isn’t a big chewer, he got through this in a couple weeks. So we are on our second shell. That’s a nice option to be able to order just the shell. Second, both shells have the same issue: they won’t stay screwed shut. The second shell is worse at this than the first. Once unscrewed, the interactive/mechanism piece will fall out and chocks be a choking hazard. It also frustrates my dog and he just barks at it until I fix it. With the new shell I think I had to fix it 5 times in the first 10 minutes of play. Overall, it’s a fun toy and we’ll keep playing on!
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Reviewed in the United States on September 24, 2025
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eloisa mago
Cuba, US
★★★★★ 5
Durable
Omg my dog loves this. The rubber is so durable my 2 yo aussie hasnt torn it up yet. I bought a cheap one from temu before and it took only 2 mins for my dog to tear it up it was complete waste of money. I love the football shape becahse it bounces unpredictably. I lile this to exhaust and exercise my aussie. This has become his favorite toy ever. It charges fast too. When im feeling lazy this is good way to exercise my dog and enrich him. I also teach him commands using this ball as his treat or reinforcement. Definitely worth every penny
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Reviewed in the United States on October 24, 2025
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Ricardoamador
Charlottesville, US
★★★★★ 5
The best toy for my dogs
I was looking for a toy that could keep my dogs entertained themselves for a long time because with the traditional balls they usually get bored quickly, But I’ve definitely loved this toy , I have two dogs of different sizes and they have a lot of fun playing with it, the ball bounces and makes sounds that really catch their attention, the quality ea great, even though they bite it , it hasn’t been damaged and it is easy to carry it. It's amazing
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Reviewed in the United States on October 23, 2025
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D. Powell
New York, US
★★★★★ 1
Didnt last.
Didnt even last a day. My dog is a 40 pound lab mix and figured out how to unscrew the toy within the first couple of hours. He then detroyed the plastic screw system on the inside.
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Reviewed in the United States on December 26, 2025
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TL Hamm
Charlottesville, US
★★★★★ 5
Super fun toy!!
This is such a fun toy! My dog loves running after it. The shape is perfect for a medium sized dog . He isn't into the round balls, but this football shape is easier for him. I love the automatic movement because it don't have to contactly be throwing it.
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