Dignity AudioPPT-50 AC power purity transformernewDignity Audio PPT-50 AC power purity transformerPlease wait, because I am out of town. On sale is one new Dignity Audio PPT-50 power purify transformer. This is a balanced isolation transformer which can reduce the noise from the electricity, an...150.00

Dignity Audio PPT-50 AC power purity transformer [Expired]

no longer for sale

Please wait, because I am out of town. On sale is one new Dignity Audio PPT-50 power purify transformer. This is a balanced isolation transformer which can reduce the noise from the electricity, and is built for the Hi end audio equipment, which specified the power consumption of 50 watts or totally. This transformer has been sound tested with an Esoteric X-05, the scene was bigger, more space, focus, detail, extended on both end, less noise and less edge. We also have PPT-120 (120w) and PPT-240 (240w) in stock. Please contact us if you are interested.

Transformer comes with 7 days trial; Refund will be the price of the transformer only.

Buyer pays return shipping.

Please visit "www.tasaudio.com" for different equipment.

Thanks for your time.


[email protected]


Feedback, 5/5/21.

Great seller this little conditioner improved sound.


Feedback, 2/24/21.

Hi Alan-

Just wanted to let you know I’ve really been enjoying the PPT-120. At first listen, I could hear the noise floor drop, but everything really came together after running it in for a week+.  

I replaced the stock fuse with a Hifi Tuning Supreme3 Cu I had laying around and while I did hear an improvement, the stock Littelfuse used is very good (nice job by the engineers!). 

Since the unit only has 1 double outlet, I tried a few different combinations of my 3 components (streamer, dac, amp) and ended up preferring plugging everything into a star wired power strip (WireWorld Matrix 2) vs a normal strip or other solutions. 

I also found the unit to benefit when plugged into a Brickwall surge protector (with emi/rfi filtering but no common mode filtering). 

Perhaps you may want to consider promoting the line on Head-Fi or offering a loaner tour to Super Best Audio Friends?  There is no one else producing these smaller transformers that are perfect for headphone systems/components that I am aware of. 

Thanks again and best regards,


Review : 10/28/2017


Hey Everybody,

Just wanted to share that I have in for review a product from Dignity Audio out of Hong Kong that is imported by TAS Audio located in Brooklyn NY. TAS Audio is owned/run by Allan who’s a good guy and offers great products at very reasonable prices.

The product in for review is called the PPT-50 (power purifier transformer) which only can deliver around fifty watts, therefore you only use it with pre-amps, CD players, and DACS, not power amplifiers.  It weighs around 2 pounds and has a nice black case with the on switch on the front plate and on the back plate one outlet for the power cord to your piece and another for the power cord to the wall socket. 

I found more impact when I put it on the Micro-ZOTL, using Audio Archon power cords, then my CF-010 DAC. It added a touch of more air around individual players, a slightly larger sound-stage with more space between players, and added a smidgen of image density.  It did no harm, but added on these postive changes.  Not a sonic earthquake, but when I took it out I missed what it was doing and put it back in.

Now, the PPT-50 costs a whopping $150.00 plus shipping, with a two week trial period!  I have spent more on NOS tubes with less of a positive change.  I have a hunch, since my pre-amp and DAC are tube based the positive changes I heard might be even greater if your front end is solid state. Either way I’m keeping mine because of what I shared above.

As stated before the Elf’s and DI’s are conduits, so any changes upstream will be easily heard through them. Highly recommended!

Feedback, 11/04/17:

Excellent seller. Prompt delivery. Product arrived in good shape and as descibed. 


Feedback, 01/03/18:

Alan is a total gentlemen and a delight to do business with. Everything I have purchased from him, I’m a repeat customer, has been excellently packed, sent in a timely way, and the gear he sells is high quality.


Feedback, 01/12/17:

Alan is a class act. Item was shipped perfectly and arrived fast. I would do business again with tas_audio in a heartbeat.


Feedback, 02/21/17:

As usual, Alan and TAS Audio really took care of me. Item exactly as described and fast shipping. Could not be happier! Thanks again