REVIEW: The best yet most affordable network switch (TPLink WR902AC)

Regrettably for all of us with ferrite PTSD from the Chord mScaler days, it does sound better... There is improved SQ to be mined from this hillside, but I think we're a long way from an optimal recipe (all these pieces are improving SQ here, so a very opportunity rich space for optimization still)
 
How do you like the ferrited LAN cable?
When a few friends who are part of Eric‘s group were quite excited with these, I made one myself.
It did sound … really shitty.
 
How do you like the ferrited LAN cable?
When a few friends who are part of Eric‘s group were quite excited with these, I made one myself.
It did sound … really shitty.

:D

After multiple posts on the "throttle cable project" I'm wondering if we should, for this thread, stay on topic for the TPLink rather than all loosely-related DIY projects. Thanks.
 
Interesting @engadin With my pimped up TP Link setup, I could no longer hear any difference between a generic cat6a cable and my favorite Sablon ethernet cables, which was an interesting finding for me. With the ferrited throttle cable, I hear a small but clear improvement here (the typical detail, bass resolution, speed, space improvements I'm hearing with network tweaks)

By no means a game changer, but squeezing out a bit more of the goodness. After not being able to hear anything between ethernet cables before, that was an interesting finding that there is still more uplift to be had.

Curious that it went the other direction for you

EDIT - sorry Keith, will do!
 
Setup Network Share (Home/Media Server) on OpenWrt using Samba & USB Drive | Detailed Tutorial
https://blog.compardre.com/network-share-samba-media-server-openwrt-tutorial/

Quick Start for Adding a USB drive
https://openwrt.org/docs/guide-user/storage/usb-drives-quickstart

Share USB hard-drive with Samba using LuCI
https://openwrt.org/docs/guide-user/services/nas/usb-storage-samba-webinterface

USB audio support
https://openwrt.org/docs/guide-user/hardware/audio/usb.audio
https://grumbeer.dyndns.org/ftp/cdroms/debian/debian-3.1/debian/openwrt/wiki/UsbAudioHowto

[HowTo] Openwrt cheap Digital Stereo WiFi Internet Radio & MP3 Player
https://forum.archive.openwrt.org/viewtopic.php?id=49013

Network Radio on OpenWrt
https://github.com/robbie-cao/kb-openwrt/blob/master/Network-Radio-MPD.md

These packages are available for playing music etc.

libmpdclient-2.22-r1.apk
moc-2.5.2-r4.apk
mpc-0.35-r1.apk
mpd-avahi-service-0.23.16-r1.apk
mpd-full-0.23.16-r1.apk
mpd-mini-0.23.16-r1.apk
squeezelite-dynamic-2.0.0.1518-r1.apk
squeezelite-full-2.0.0.1518-r1.apk
upmpdcli-1.8.11-r1.apk

Music Player Daemon could handle lossless formats as well, while they're providing support for Qobuz / TIDAL etc. via upmpdcli.

About time to get multiple units of TL-WR902AC?
 
Thank you keithc for this review and recommendation! I’ve been using this tplink setup with the anker battery since yesterday and it sounds fantastic. I’ve always felt my current streaming setup was compromised, since I’ve actually been using a router in client mode to my streamer (with multiple switches in between) due to the logistics of my router and wifi. Even with all my QSA cables, multiple audiophile switches, and a small collection of LPSUs, it never sounded as good as being directly wired to the main router.

Since I was already using a router in client mode (powered by farad3), I didn't expect much from this little TP-Link toy. But with the battery and directly connected to my streamer (qsa discovery ethernet only), there’s definitely more detail, space, and realism coming through! I need to experiment with it more.

When I get a chance, I’m going to try connecting power directly to the 3.3V input using an ldovr dc regulator from the Anker battery. Has anyone tried this yet?
 
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Thank you keithc for this review and recommendation! I’ve been using this tplink setup with the anker battery since yesterday and it sounds fantastic. I’ve always felt my current streaming setup was compromised, since I’ve actually been using a router in client mode to my streamer (with multiple switches in between) due to the logistics of my router and wifi. Even with all my QSA cables, multiple audiophile switches, and a small collection of LPSUs, it never sounded as good as being directly wired to the main router.

Since I was already using a router in client mode (powered by farad3), I didn't expect much from this little TP-Link toy. But with the battery and directly connected to my streamer (qsa discovery ethernet only), there’s definitely more detail, space, and realism coming through! I need to experiment with it more.

When I get a chance, I’m going to try connecting power directly to the 3.3V input using an ldovr dc regulator from the Anker battery. Has anyone tried this yet?

Congrats. It is definitely eye-opening irregardless of price.
Can you share what your former network chain was w/ the specific components and order?

One thing that might be worth trying is a second TPLink on battery as an access point between your router and the terminal client TPLink.
 
Congrats. It is definitely eye-opening irregardless of price.
Can you share what your former network chain was w/ the specific components and order?

One thing that might be worth trying is a second TPLink on battery as an access point between your router and the terminal client TPLink.

TP-link ac1200in client mode powered by farad3-> qsa-l ethernet->etheregen-> clock modified korenix m12 switch (both powered by sean jacobs dc3)-> qsa-l ethernet to fidelizer streamer to Weiss 501 dac.

Already ahead of you and have another set on order to try it as a battery powered access point :)
 
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@SolidCore

Hi Stephan!
Would you please describe the sonics of the original and/or modded version versus your LHY switch (with fuse upgrade)?
So readers can get an impression of what to expect.
Thx and cheers,
Ulrich

Hello Ulrich,

The comparison is a bit flawed, as I normally use an LHY FMC on the router, then an optical fibre cable to an LHY-SW6. So there's not much difference in sound quality compared to the TPLink 902. The optical fibre cable adds a touch of stability and more tranquillity.

Best regards,
Stephan
 
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Hello Ulrich,

The comparison is a bit flawed, as I normally use an LHY FMC on the router, then an optical fibre cable to an LHY-SW6. So there's not much difference in sound quality compared to the TPLink 902. The optical fibre cable adds a touch of stability and more tranquillity.

Best regards,
Stephan

Thx for your reply!

So in your setup TPLink 902 is roughly at the same level as a LHY SW6?
902 already modded?
For listening to music you prefer to use the LHY combo.

I think I understand.

Cheers, Ulrich
 
In terms of batteries, there's an audiophile in Japan who experimented with LiFePO4 at the very beginning. Then he moved on to try the latest and greatest afterwards.

HAMAKEN WORKS HW-SSPB100series Semi-Solid State Power Bank
https://hamakenworks.jp/user_data/sspb

Yoshino B330 Solid-State Power Station
https://yoshinopower.com/products/b330-solid-state-portable-power-station

Elecom DE-C55L-9000BK
https://www.elecom.co.jp/products/DE-C55L-9000BK.html

JESIMAIK GK03
https://www.jp.jesimaik.com/products/electric-starting-power-supply

In the SQ department, Elecom and JESIMAIK (sodium-ion for both) came out on top. As always it's unlikely for any online shops to ship them internationally despite the safety.



FYI - here are some alternatives

https://www.biwattpower.com/cn/m2
https://www.eet-china.com/mp/a437391.html
https://www.chu21.com/html/chunengy-6206.shtml
https://www.bluettipower.com/products/sodium-ion-battery-pioneer-na
https://chinese.alibaba.com/product-detail/BLUETTI-Pioneer-Na-Sodium-Ion-Battery-1601602996158.html

Other choices as follows, they're available in quite a few sizes such as 18650 / 32140 / 40160 / 46145 etc.

https://world.taobao.com/item/36360773690.htm
https://world.taobao.com/item/809093616934.htm
https://world.taobao.com/item/810966799323.htm
https://world.taobao.com/item/825952431832.htm
https://world.taobao.com/item/827165170327.htm
https://world.taobao.com/item/835052529627.htm
https://www.aliexpress.com/item/1005006041916183.html
https://www.aliexpress.com/item/1005007510504096.html
https://www.aliexpress.com/item/1005008870899510.html

Here's an example with LT3045 regulators / 5V DC

https://www.aliexpress.com/item/1005004090963642.html



Several audiophiles on this popular French forum shared their findings after trying these capacitor banks from China, I won't embed so many pictures since they're taking up so much space on the entire page

https://forum-hifi.fr/thread-34179-post-822936.html#pid822936
https://zupimages.net/up/24/51/kbr2.jpg

https://forum-hifi.fr/thread-34179-post-823356.html#pid823356
https://zupimages.net/up/24/51/9nvo.jpg

https://forum-hifi.fr/thread-34179-post-823437.html#pid823437
https://zupimages.net/up/24/51/f811.jpg
https://zupimages.net/up/24/51/2yrd.jpg

https://forum-hifi.fr/thread-34179-post-823471.html#pid823471
https://zupimages.net/up/24/51/s0ql.jpg

https://forum-hifi.fr/thread-17737-post-832596.html#pid832596
https://i90.servimg.com/u/f90/13/70/58/13/img_1165.jpg
https://i90.servimg.com/u/f90/13/70/58/13/img_1168.jpg

https://forum-hifi.fr/thread-17737-post-837906.html#pid837906
https://i90.servimg.com/u/f90/13/70/58/13/img_1176.jpg
https://i90.servimg.com/u/f90/13/70/58/13/img_1177.jpg

https://forum-hifi.fr/thread-17737-post-849597.html#pid849597
https://i90.servimg.com/u/f90/13/70/58/13/img_1208.jpg
https://i90.servimg.com/u/f90/13/70/58/13/img_1209.jpg

https://forum-hifi.fr/thread-17737-post-849882.html#pid849882
https://i90.servimg.com/u/f90/13/70/58/13/img_1166.jpg

These guys seemed to be more interesting than the others, you better shop around since there's an incredibly wide range of prices for the same stuff

https://world.taobao.com/item/878878819877.htm
https://www.aliexpress.com/item/1005006703088839.html
https://www.aliexpress.com/item/1005008094560069.html
https://www.aliexpress.com/item/1005008657653182.html
https://www.aliexpress.com/item/1005009274310988.html
https://www.aliexpress.com/item/1005009408769137.html
https://www.aliexpress.com/item/1005009671871140.html
https://www.aliexpress.com/item/1005009739124871.html
https://www.aliexpress.com/item/1005009915356540.html
https://www.aliexpress.com/item/1005009992834793.html
https://www.aliexpress.com/item/1005010305749512.html
This is the 5th clc filter i gave added to the audio system...which should alone be a strong endorsement. I use them on the power supplies for 2 network switches, one lumin streamer, a wifi router and a cable modem. The power supplies i have added these to included ifi elites, a farad 3, a breeze lps and a huge custom built lps. In every instance an improved sound was quite apparent, with a more relaxed sound, reduction of treble glare, tighter bass and improved 3d imaging. I have not found a dc supply that has nit been improved by these inexpensive devices. You can further improve the effect by using an aftermarket dc cable to replace the 30cm one that comes with it..xangsane and ghent are obvious chiices.



Finally here's yet another affordable tweak for DC power, remember it's gotta be passive POE

https://audiophilestyle.com/forums/topic/42959-iso-regen-performance-improvement-cheap/
https://audiophilestyle.com/forums/...ter-audio-streaming/page/665/#comment-1059624
I can say the sound quality improvement is something else -- I don't want to go into hyperbole but it's a big jump with dramatic improvement in everything. That's after a couple days of burn in, so hopefully further improvement.

Total cost for this is roughly $180. Each 8 port injector is $22, each U Green cable is about $5, the 2.1 mm male to male cable is about $8.

We do need 4 boxes + 16 Ethernet cables for each run as shown above

https://www.aliexpress.com/item/32749915401.html
https://www.aliexpress.com/item/1005002599607061.html
 

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