TTouch - PSU for Logitech Touch


Availability: In stock



  • Power output: 5V 3A

  • Mains Supply: 110-120V or 220-240V

  • Dimensions: 24x16x6 cm

TTouch - PSU for Logitech Touch

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The TTouch power supply replaces the small wall-wart power supply that comes with the Logitech Touch, and provides significant improvement in sound quality. This power supply can also be used to power the Squeezebox 3

The design is based on the experience gained with the TeddyCap family of power supplies for Naim Audio equipment, and uses the same technology.


In general, you’ll experience more clarity, tighter bass, more detail, better dynamics, natural voices, better soundstage etc.


The small power supply which is provided with the Touch is based on a technology called Switch Mode. Using this technology it is possible to create small, efficient, and low cost power supplies. Unfortunately due to their method of operation (high frequency capacitor charging), these power supplies are also very noisy, causing degradation in sound quality. As an alternative, several after market power supplies exist which are usually based on Linear Regulators. These regulators provides an improvement over the original power supply but as can be seen on the graph below are still limited in their performance.

The TTouch power supply is based on a superior regulator called SuperTeddyReg and provides a significant improvement over linear regulators.

The following graph shows the noise level measurements of the original wall wart power supply (red line), an alternative power supply based on a Liner Regulator (blue line), and the TTouch power supply (black line). The brown line is a zero Volt reference which is actually the measurement equipment internal noise. As can be seen the TTouch power supply noise level is very close to the zero Volt reference.

For more information about our power supplies read here... 


The TTouch power supply is equipped with a high quality cable made of silver plated PTFE insulated wires. The cable capacitance is around 13pF/ft, and its resistance is also very low, around 10 milliohm/ft.

Shipping is by registered mail and usually takes 1-2 weeks. Please contact us for express mail if required (note that express mail requires customs declaration).


"Wow. This is fantastic. I’m using this with a Logitech Touch feeding an Emm Labs DAC via USB and wouldn’t think the power supply would matter much given the USB is asynchronous, but it seems like a noticeable improvement. Maybe I’m imagining it but I just ordered 2 more power supplies for my other 2 systems. Thanks!"

"I've got to admit, your TTouch power supply results in a paradigm shift in digital performance.  I honestly did not expect to keeps this product beyond the 14 day trial period.  I've tried many other so called digital marvels in the past; none of them measured up to my expectations and needs.

I have an extremely high resolutions system - one than is never forgiving; however it is highly rewarding once things are right.  With the Ttouch in place, I can finally relax in front of my system, sit back in may chair, and say ahhh, this is it -  music with the peace and harmony I've been looking for for years.  The Ttouch allowed me to discover that what I used to think was too much treble energy in my system was actually an excess of noise resulting from a poor power supply.

My horn speakers have an adjustable crossover (attached pics).  Due to the low noise floor your product generates, I was able to make an adjustment allowing the crossover to deliver more high frequency energy generated by the compression drivers and metal horn.  This typically results in fatiguing listening sessions.  Not anymore.  I now hear the full spectrum of music without fatigue, and most importantly there now is harmony.  With harmony there is music.  That is what your product has given me and I am more than grateful to you for that.

If your DAC does something similar, I'll have to acquire it as well."

"In fact the impact on the sound is beyond my expectations esp since I use a digital output from the touch and I have only used it for a few hours"

"I’m still very impressed after a few months of playing Squeezebox Touch with your PSU and the TeddyDAC over USB Interface. Sonic performance is still amazing!! Best buy ever ;-) !!!"