Hi,

Maybe the wrong forum for anything "Low budget", but reality dictates
that I try to get the best bang for as few bucks as possible, so here
goes:

I have a touch, playing into a Cambridge Azur 640 multi-purpose
decoder/amp (multimedia + music), which I just discovered can't handle
anything over 96KHz PCM.

I like listening to classical vocal (opera, Lieder, etc) and have
identified that a nasty hard-edge to some voices may be at least
partially attributable to low-def digital sources, so am trying to
upgrade both source material and equipment to handle higher def.

As I'm on a very tight budget, I decided to go for a SMSL 'Sanskrit
PRO-B DAC'
(https://www.aliexpress.com/item/2015-new-Sanskrit-decoder-DAC-6-anniversary-edition-Optical-fiber-coaxial-USB-input-support-mobile-phones/32409198095.html)

I'm also running out of power sockets and am running more equipment than
I'd like (including my touch) from original wall warts, so decided at
the same time, to invest in a 'cheap, dual linear power supply'
(https://www.aliexpress.com/item/WL-Hifi-2-way-linear-power-supply-DC-2-USB-preamp-DAC-external-linear-PSU-amplifier/32249266485.html).

A polite request at this point not to be too rude that I didn't spend
the extra 1000$ on something that will sound better. I didn't and I
can't.

However, as I'm aware that I didn't buy the best and as I' also aware
that power supply is likely to be a major source of degradation, I'd
like also to implement a CHEAP alternative to the
'
iFi Audio DC iPurifier Audiophile DC Power Filter'
(http://www.ebay.com/itm/iFi-Audio-DC-iPurifier-Audiophile-DC-Power-Filter/391548685062?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D38530%26meid%3D21c3d15354374cb79a9b36b8ce7c248b%26pid%3D100011%26rk%3D1%26rkt%3D18%26sd%3D391393315448)

as close as possible to the power inputs to both the touch and the DAC.

I see a number of cheap choke+caps filters available, similar to
http://www.readymaderc.com/store/index.php?main_page=product_info&cPath=11_15&products_id=138

Amperage may be a limitation on some of these. As you know, the Touch
draws 5V at about 2.5 A, while the DAC needs 9V at 2.5W (0.28A) - if I'
m to believe the web page.

What would be my best bet to filter as well as possible, without
spending much money?

BR.


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