Mouser JP tries to sell more LDOs :) https://twitter.com/mouserelecjapan/status/1277210245417308160?s=21

Well, the curve only tells half of the story. What x4 RAF (but not x4 RAB, go figure) excels at is coherency - crossed multi-BA set ups have quite noticeable phase distortion/colouration; punch/slam - HODVTEC is kind of close, but it lacks weight; and with @stephensynanta16 adaptor HF extension...

No idea and I don't have SWFK anyway :frowning2: 4 RAF drivers in series, glued together in a brick like formation Yes, I posted early experiments few pages back... A bit later, but here's FR:

Gentle pressure with wire cutters, they come off quite easily. I like spoutless sound as there’s a bit less upper midrange harshness (so I can go 1 up in dampers resistance, from green to brown) and better slam in lows and mids. At this stage x4 RAF in series is my best sounding set, although...

I'm doing lots of experimenting with spouts removed on RAB/RAF drivers at a moment. You can stretch 2-3mm ID tubing over single or dual drivers easily enough, if it's 3mm I glue 2mm ID tube into 3mm ID tube, works like a charm! PS: seal important for bass, so I insert drivers only halfway...

Certainly, here you go: MMBT2222ALT1HTSA1 MMBT2907ALT1HTSA1

2.5mm (it will also be TRRS indicating 4 contacts, but 2.5mm is the important part).

They look similar, but I don’t have the cable you linked, so cannot comment on that one. But I can recommend a really good one that I have and like a lot, the NiceHCK one - copy paste description in Ali and it will pop up (cannot post a working link from mobile, sorry) Hope it helps.

My favourite is NICEHCK 16 Core High Purity Copper Cable 3.5/2.5/4.4mm Plug MMCX/2Pin Connector Cable For TRN V80 AS10 BA10 NICEHCK M6 HK8 NK10 Got 2, will probably get another one on 11.11 No earhooks help with precise fit, sound-wise reduces harshness just a bit with BA IEMs Very soft and...

Listening to x4 RAF no spouts in series as I type. It has the best bass (better than GV or GK or BS6 all zobeled) both in volume and slam/impact especially electronic music that has good sub-bass, while measures very to similar to them (to about 1kHz). So while it may not be exactly what you are...

From OP275 datasheet: So it should be safe to remove (short) 4 balanced output resistors, but output impedance will still be high (15Ohm). I replaced LPF opamps for AD8620 and shorted output resistors, no issues so far. These have quite low output impedance and output short circuit protection...

Depends on what ear/headphones you are using and who you are. As you should know I pretty much replaced most of components in at least one of my DSD's. It was a good experiment and a great experience and I can confirm that utilising thin film 0.1% 0805 resistors, PPS SMD caps, sandwiched...

Bulky is good, especially if doing hybrids or multi-drivers especially helpful to keep tubing straight. Well, as long as the shell is not falling out under its ow weight...

This stuff is absolutely Awesome! Can you do a faceplate for this one too? Also, do you think you could construct the nozzle along these lines: https://m.intl.taobao.com/detail/detail.html?id=565129690783 but maybe a variant for x2 2mm ID (3mm OD) and maybe x1 2mm ID (3mm OD) and x2 1mm ID...

Sooooo.... I removed spouts from my x4 RAB series set + zobel + green damper. Impressions: almost DD level and quality lows and mids (sweetest mids I've heard from BA so far) but still faster and better resolution of lows, much higher quality than HODVTEC or CI; less distortion; no funny...

Give it a go, practicing on RAF series + zobel maybe? Then moving onto dual RABs. For the price it is an amazing sounding recipe, especially with spouts removed.

On a whim removed spouts from dual RAF set up (drivers are glued up together and inserted in stretched 3mm ID tubing terminating in 2mm ID one). Very positive impressions so far, better HF extension (almost but not entirely TWFK level) and less of annoying harsh upper minds/low highs resonance...

I was just reading your post from way back when you mentioned you have them... Is it the same outfit that makes dual RAB, single spout? https://item.taobao.com/item.htm?id=569062783217

+/- 9volts

Has anyone tried smaller dampers, I see soundlink has a variety of them? I’m still working out how to get 3 tubes into the nozzle of a universal shell, those I have can fit up to 3 1mm ID tubes (just), so I guess I can simply run tubing all the way from drivers spouts, but not sure which...

Try removing x4 output resistors on 2.5mm output, this may solve the issue. I'm not 100% certain but I think LPF has gain of 2, but since the balanced output is bridged (borrowing the term from PA world) it's above my current level of understanding to predict the output voltage swing, sorry.

Hi! I use these pins: https://www.aliexpress.com/item/32721243961.html And pcbs like these: https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/191736126491 Edit: updated link

It would not work on DSD files if that’s what you are listening to...

OK, just expressing an opinion (actually, not even initially mine, but I agree) based on what I believe is true based on photos above: 1. DC-DC step up (6 pin) is not pin compatible with the stock one, so LDOs are not supplied with 5.2V as in stock. 2. Tantalum capacitors polarity is reversed...

Right... Please don’t see it as criticism or negativity, it’s more like a peer-review. There’s a strong possibility that they are not pin compatible (I just checked datasheets again), this May also explain display flicker... If they are not compatible, then DAC runs directly from battery as...