Intro:
I couldn't resist the early-bird half-price discount I've been offered by Penon, whose guys have been really nice to me after I returned a faulty GS849 cable I didn't _really_ need: fully refunded and very kind and quick response from their support team... I kind of felt I owed them another go at one of their products!
The main reason I went for the FAN was that my go-to "cheap" plug 'n play single-ended set - the ThieAudio Legacy 3 - had a cracked right-side plug and I wanted to have a backup set at hand just in case that the whole piece fell off irreparably.
First look:
The cloth box the FAN comes with is simply outstanding. Perfect size and great feeling in use. At first sight and touch, I was sure that at least the box would stay with me for good. Once opened, I was pleased to witness how the earpieces looked and felt beautiful, net of the sub-100$ price bracket.
The cable? Not so much, but I thought that is was ok for the price all in all.
First impressions:
Awful. Plain awful. Sorry, I have no better way to express my initial thoughts.
I started trying every single tip among the ones that came with the set right away - starting with the most obvious M Green silicone choice - and I couldn't get a proper seal out of _any_ of them. The nozzle is slightly thicker than my other IEMs', so I had a tough time trying to slip my go-to M SpinFit CP100s in, and even then comfort and isolation were lacking, to my utmost surprise since I've always got good results on other sets. Then I heard something completely off coming from the left earpiece...
Ouch. The grill collapsed, but that was probably all on me trying too hard to squeeze the nozzle into my ear canals in search of a proper fit.
Penon provides a couple of extra grill pieces (kudos for this!) so I pulled this one out with a needle and slipped a new one in. This did the job.
Finally, I had to settle on a pair of foamies I don't even remember where they came from. I'm definitely not a FAN of foam eartips, but those M-ish ones did the job and incredibly didn't mess too much with the sound. Speaking of which...
Out-of-the-box Sound:
"Boxy", as I tend to call it. More-than-just-shy, scared mids. Hazy trebles. Upper-bass cannons (and I like subbass focus).
Desolation filling my soul right off the bat when I first plugged the FAN into my Samsung Note10 Lite smartphone.
I thought: "Found a good fit, but where to now?!". My disappoinment with the sound was overwhelming, but I was motivated not to give up just yet.
This precious post from
@Sam L offered oratory1990's Harmanish equalization, so off I went enabling those AutoEQ results (which I dialled in days before the FAN came!) into Neutron MP. As an important side-note, I'm one of those who regard EQing as a crime: things should show their (hopefully peculiar-good) character, but since the FAN had a nasty one I was pushed to commit the crime, and...
"Ow. Now we're slowly getting there!" I thought. Went on and tweaked those EQ settings a little bit to suit my taste. Still, while soundstage width was definitely not bad and separation benefitted from first EQing, the FAN lacked in dynamics and energy and - net of a safe -6dBFS pre-(de)amplification - I had to crank the volume to a whopping 75/100 to get a decent volume. Flat-sounding. Hm. "Not there yet".
Coupling:
Despite the single-ended use I was willing to reserve the FAN for, I swapped the stock cable with a 4.4mm balanced Linsoul LSC08 I've got a while back for the Legacy 3, regardless of the fact that they might start an all-Chinese war when coupled. Hah.
Plugged the upgrade-wired FAN into my FiiO M11Pro Pentaconn output and wow... Night and day, with the same equalization!
These IEMs need a decent quality amplification and power to shine. Now I knew.
Back on my laptop. HQPlayer 4 Desktop upsampling to DSD256 and feeding a brand-new Khadas Tone2 Pro mini DAC-amp...
Once convolution-EQed, the results were also excellent thinking how the whole experience started. A really enjoyable team-up!
The bedside S.M.S.L M200+SP200 experience was equally nice, but hey... Let's not get into this! Not the use the FAN is for, at least for me. A shot is worth dropping though!
Conclusion:
At the discounted price, and if you have spare tips and cables and patience with EQing, the FAN is a highly recommended set.
It needs a little work. It needs power. But the results I've got after all this are nothing short of stellar. The technical capabilities of this set are fenomenal for the price!
On the other hand, if you're not willing to tweak anything like I was at the beginning, the FAN are likely going to be a huge disappointment, I'm afraid.