![20240129_074836.jpg](https://www.head-fi.org/attachments/4661779/)
Cables:
Monarch MKII stock cables
Unique Melody MEXT stock cables
Effect Audio Cleopatra II OCTA (Pentaconn OFC and TermX versions)
Acoustune HS1750CU stock cables
IEMs:
Thieaudio Monarch MkII
Unique Melody MEXT
Acoustune HS1750CU
DAPs:
A&K SE100
Fiio M15
A&K SP2000
PW Audio SP2000 adapters
a portable amp + cables
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TermX vs Pentaconn OFC cables
Pentaconn OFC has improved sound. It's easy to differentiate the two and even my friend was able to blind test and identify the correct cables.
ThieAudio Monarch MKII
My personal unit. Neutral. It is very clean sounding but needs something to make it more fun. Bass is actually decent on this unit but wouldn't hurt to have a bit more, so I was curious if upgrading the cables and changing tips would improve the sound. I was lent an Erua Tawa cable and although I like the sound coming from it, the cable makes too much sound when moved or touched. After 40+ hours of research I ended up with a EA Cleo II Octa TermX cables... someone else offered me a very good price on the Pentaconn OFC version so bought that one too and will return the TermX in a few days before my 30 day return period expires. The Cleo provides that extra bass and bonus improvement in treble region (violin sounds more realistic with high pitch tone) without sacrificing the nice clean mids.
Unique Melody MEXT
I had a very interesting experience with this IEM. MEXT is already bassy with the stock cable, so with the Cleo it sounded very wrong like a child got a hold of the EQ and randomly dragged the bars up in the bass region resulting in very unnatural bassy sound that bled into the mids and drowned out microdetails. Now I understand that a high end cable is not a one-stop upgrade for all IEMs. I tried the Monarch MKII stock cables right after and, to my relief, that cable provided an overall improvement vs the MEXT stock cables. After checking the price, I personally would not recommend the MEXT.
Acoustune HS1750CU
Sounds like a younger sibling of the MMKII. More similar than different though MMKII pulls ahead in some areas. I hear a bit more details with the MMKII. Since MMKII is considered neutral, I would also consider the 1750 leaning towards neutral. When I asked my friend the model name and price I was pleasantly surprised. For half the MSRP, I'd say this is a solid IEM for the price. Even more surprising that it's a 1DD IEM. My other IEM is the Beyerdynamic Xelento which is also a 1DD. Between the two, I'd easily pick this Acoustune. Unfortunately, it doesnt use 2 pin or mmcx so I can't try my other cables with it.
A&K SE100
I only tried this DAP for 10 mins. It's a significant downgrade compared to the M15 and SP2000. I have limited time with the SP2000 so I would rather spend time testing it than the SE100.
Fiio M15
My personal unit and my first DAP. I also have the Sony WM1AM2 which my friend is currently borrowing while I try his SP2000. Fiio M15 is warmer sounding compared to both the Sony and SP2000. WM1AM2 sounds very clean but almost too clean to a fault that I don't have fun listening to it.
A&K SP2000
Interestingly, this shares the same dual AK4499EQ as the M15. The overall sound is similar but SP2000 hands down win in terms of separation and clarity. Very refined sound. It's exactly the sound upgrade I'm looking for. It's like combining the fun of the M15 and the cleanliness of the WM1AM2. I'm just slightly annoyed that it doesn't have 4.4mm output. I also haven't tried installing or reading about Tidal compatibility but it might be an issue. SP3000 would solve both those issues but I'm not sure about spending more than double the price of the SP2000 (used prices). SP3000 is also 100g heavier and to me it feels that SP2000's weight and size is already the max I would tolerate. It's already not pleasant holding it out for a long time and it's ~100g heavier than the M15 but in reality it feels almost 2x heavier. There's a 4.4mm mod by someone in UK but that will cost 400GBP plus shipping.
PW Audio Adapters for SP2000
Thanks to my TermX cable, I can properly test the 2.5mm output vs the 4.4mm adapters. The 1960's version is night/day better than the other adapter. It also makes the sound warmer in exchange of very slight decrease in clarity so I'm losing out on some microdetails. I find using the adapter better for longer listening session and when I'm not focused on the music. The SP2000 can be very revealing and punishing on poorly recorded tracks. Having a warmer and more fun sound helps with those tracks. With the adapter though I'm not hearing the full capability of the SP2000. The adapter also adds physical stability to the cable connection. 2.5mm feels like it would break in a small accident, which is a real concern for me because I move around often.
???
Portable amp that I havent tried yet plus cables to connect to the DAPs.
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My end game?
I am leaning towards getting the SP2000 and then call it a day with Monarch MK2, Cleo II OCTA cables, and SpinFit W1 tips then hide for the next 3 years. This website is dangerous and full of temptations haha. If I'm obsessed about getting the best sound then I would have to mail my Cleo to Singapore to reterminate to 2.5mm and also a dedicated 2 pin instead of ConX (some claim that it will also improve sound) though I'm concerned if those "improvements" could potentially push the treble region to become too piercing to my ears. I suppose I can go back to the M15's warmer and less revealing sound for long listening session then move to SP2000 if I want to hear everything. It's the 'I already enjoy the sound' vs 'can I push this further?' dilemma. I have to be careful not to get deeper down the rabbit hole though I wouldn't have gotten this far if I didn't bother pushing my gear further. But perhaps I would've just been just as happy if I stopped at my Xelento IEM. But then I wouldn't have found out all these extra sounds in my favorite tracks.
Many thanks to
@main character for lending me equipment. My wallet hates him though. I told him I don't want to try cables... also told him I don't want to try other DAPs. Here I am with Cleo cables and now I may end up getting an SP2000 or even SP3000.