DISCLAIMER
This review is based on the demo set at Jaben Singapore, which I have demoed extensively no less than 3 times.
Though fit is pretty good, but as perfect fit is not achieved, I shall not be commenting much on the bass of C435.
 
 
 
FitEar is a household name in Japan, though they fast gaining popularity in Singapore.
TG334 has been a rather big revelation here in Singapore, hence bringing more attention to their line of customs here.
 
Quality wise, FitEar is almost peerless. The finish on every product that leave Suyama San's lab is immaculate.
Be it customs or universals, each and every (C)IEM is of such high quality, it sets the bar for others in the industry to follow.
 
However, potential buyers need to be aware that there is no resale value for FitEar customs, as they fill the inside of the shell with acrylic.
This process, however, ensures that all FitEar customs have that solid and premium feel.
 
 
 
SOUND
I personally own an UM Miracle and have always feel that the sound quality of 435 is Miracle if it was perfected.
For me, both share a similar kind of signature.
Hence, I'd would be writing this review of 435 and comparing it to Miracle (in italics).
 
Bass is tight and impactful, though missing slightly in quantity.
Miracle is like the above description, except 435 has the better quality in texture.
 
Mid range is extremely clear, and listening to 435, it's like looking out of a open window with no glass in between what one is seeing.
Besides the extreme clarity in mid range, Suyama San has added a spoonful of honey into the mids. Not too much, just enough to sweeten the mid range so that it sounds slightly sweet.
This makes 435 so listenable with vocals based tracks, especially female vocals.
Some say Miracle has a recessed mid range; I've always disagree. To me, Miracle's mid range is just so clear, one does not hear other flavour on it; but I do concede that the mid range of Miracle is slightly dry.
Miracle's mid range is clear, but 435's is even clearer. The slight sweetness to the vocals just makes 435 a much better CIEM here.
 
435 has a very extended and extremely smooth treble. How Suyama San managed to tune the treble to be so extended, without sounding sibilant is quite beyond me.
Combining the above with an amazingly spacious sound, 435 has one of the best treble I've ever laid ears upon.
For me, Miracle's forte has always been its treble and soundstage performance.
Miracle has very a pretty extended treble that's very smooth. It's also pretty open and spacious sounding.
But, 435 easily resets the bar higher here. Keyword is EASILY. Unbelievable.
 
435 still has a final trick up its sleeve.
Its soundstage performance is simply unbelievable.
For an IEM, 435 has an extraordinarily wide soundstage, with excellent depth to match.
There's a slight out of the head kind of feel for me, even on a demo.
Miracle has a soundstage performance that is both wide and deep for an IEM, which I personally enjoy and feel that is one of Miracle's forte.
However, (again!), 435 manages to reset the bar with ease; managing to sound both wider and deeper.
 
 
 
435 performs best for Jazz, Classical and the slower paced vocals music. If you listen to these genres of music, 435 has to be on your shortlist if money is not an issue.
The clarity, vocals presentation, treble and soundstage performance is amazing.
 
However, if you listen to a lot of Pop, Rock or mainstream music, 435 is probably not for you. You might be better off looking at Private 333 or MH335DW.
More gratification to be had there.
 
Personally, for me right now at this point, 435 is the summit of my IEM audio journey.
It's the best CIEM I've heard in my time till now, and one of the very best CIEM that your money can buy.
I simply can't pay a higher compliment to Suyama San and his team than this.

I recently had the opportunity to listen to WA6SE on demo for 2 hours at the comfort of my home and this is my take on it.
The DAC is DACport and the headphone used is LCD-2 Rev 2 if anyone is interested to know.

The actual amp consists of 2 separate units; one is the actual tube amp while the second unit is a separate power supply to the amp. The 2 units would then be connected via a power supply umbilical cord. I have not actually listened to its predecessor, the WA6, before; as such I am not able to comment on the differences in sound signature or power. However, with a separate power supply added in this SE version, it should not be a far stretch to think that the sound produced by WA6SE would be both more powerful and cleaner. The amp looks very handsome and muscular in live. I had the silver set, and it looked a very sophisticated and well crafted piece of machine. The volume pot is very smooth and there are no blemishes on the body. It is indeed very finely crafted by Mr Woo.

I have not heard many tube amps as I am more of a solid state sound signature kind of guy. The general signature of tube amps seems to be warm and mellow. The WA6SE has quite a black background. When I was listening to LCD-2 on it, I did not really pick up much noise or hum in the background. The WA6SE did not sound as warm or mellow as I expected it to be. Sure, it was slightly warm, but it was not to the extent of being very warm, nor was it so mellow that it was only suitable with tracks with low PRaT. If anything is to go, I personally feel that WA6SE is a little bright with a tinge of warmness, which is a funny thing to say about a tube amp.

Soundstage is excellent on WA6SE both on width and depth. It is relatively wide and I could hear staging in layers. Imaging is also very good. Before listening to WA6SE, I expected the transient of tube amps to be rather slow and mellow sounding. The WA6SE changed this notion; in fact, WA6SE is just 2 steps behind the Burson HA-160 that I own in terms of transient. It was quite a funny feeling, and I had to double check just to make sure that the headphone was plugged into WA6SE instead of Burson. WA6SE actually impressed me on the energy that it is able to churn out. The decay of WA6SE sounded like midway point between Burson and a Little Dot MK III I listened to a couple of months.

Clarity is present in abundance and the slight warmth was actually a nice complement. WA6SE also scored quite high in transparency as I expected the warmth to slightly curtail it, but that was not the case. As mentioned earlier, the energy and speed that WA6SE actually made my music sounded crisp and clear, and that was something I clearly had not expected prior to this audition.

Bass on WA6SE extended low, and the bass details is quite detailed. Impact is also quite impressive, yet the decay on the bass is just nice; it did not linger too long as other tube amps nor did it behave like a solid state's short decay. In short, for me, the bass impressed me as I expected it to be slightly loose, but it was clearly not the case.

Mids has always been the stronghold of tube amps and I am very happy to say WA6SE excelled on this front. The timbre and texture is excellent. Vocals sounded natural, full and lush with a tinge of emotions especially on female vocals. If there's one defining feature that I have to comment about WA6SE, it is the mids that I totally enjoyed.

For me, the treble on WA6SE is quite a funny beast. As I mentioned earlier, WA6SE sounds a little brighter than the few tube amps that I have heard. So, treble extension on WA6SE is very good, in fact, it is better than the few tube amps I have heard. However, this also means that music that is a bit "hot" in treble might be more revealing on WA6SE than other tube amps. On the flipside, WA6SE also provides a little sparkle that is missing in most tube amps.

Concluding what I heard on WA6SE, I could be forgiven for mistaking WA6SE to be a hybrid amp. But it is not; it is a tube amp. I am usually a solid state guy but I had a thoroughly enjoyable time with the WA6SE. It has a relatively fast transient, yet has that warmth that is lacking in most solid state amps. I was especially impressed with its mids and soundstage. If I were to consider a tube amp, the WA6SE would be very high on that list at this point. That is how highly I rate this amp.