Discussion in 'IEM Measurements' started by Marvey, Oct 6, 2017.
Sure, give me a couple of days and I’ll give some thoughts against the two.
The modded Fostex sounds a good deal warmer overall and comes across a little V shaped in direct comparison. The Plus sounds much clearer and brighter overall. Even though the Plus is brighter, the Fostex is the one that can be a little prickly in treble at times. The Fostex bass is pretty quick for dynamic, so it doesn’t sound much slower. Both go deep. Headstage wise, while the Fostex has good depth, it sounds much narrower and shorter in a/b.
I’ve been under the weather, so the comparison was only using the iPhone 7+ with dongle. The Plus is a clear step up, but then again Andromeda will be a step up over the Plus.
@shotgunshane thanks for taking the time to do this, even when you've not been well. I really appreciate it.
I was fairly certain that I’d be ordering these, but the low impedance now has me concerned. I’d planned to use these with my phone (iPhone 6S+) until I purchase a DAP (likely a Sony, based on what I’ve read so far). I wasn’t aware that the OI of the iPhone was ~5ohms, and the Sony DAPs seem to be ~2.5-5ohms. So, neither should work particularly well with these IEMs. Are there other DAP recommendations for use with these, or would I best be served by looking for different IEMs? Reading that these are among the best under $1k is great, but they’d need to work well with the source.
@Peter78 These work great out of an iPhone with an OI of 5 ohms. They just get a bit bassy when you increase the OI. I like less prominent bass levels than many members here, but am happy with this out of my iPhone 6S. @Marvey states that his ideal OI might be around 11 ohms for this IEM (if I recall correctly). My iPod 5.5g has about an 11 ohm OI, which while bearable, is too much bass for me. I've been mostly listening to this on a WM1A, which has an OI of about 0.9 ohms.
Are you sure it’s 11ohm? I think he said 1ohm.
Not even 1ohm.
That makes more sense to me. So just get the Apple lightning to 3.5mm adapter then. They're like $10 and have a 0.37 ohm OI.
No, it was:
~ 0 ohm impedance (Magni 3): Etymotic SR + ton of bass
~ 1 ohm impedance: assumed sweetspot for Marvey
~ 2 ohm impedance (ZX2): UERM mids with HD650 treble
~ 4< or 5< ohm impedance: probably Audezes
Edit: scooped by Luge
I'm sorry if I missed it...would these play well with something like a Vali 2 on low gain or would it be disastrous?
bet you'd need an IEMatch or similar attenuator for these with Vali2.
for months I used a IEMatch prototype (-12dB) with Andromeda into Vali2 and it was a fun listen.
After all the UERM comparisons, it turns out my expectations were far too inflated for what the Plus is actually capable of delivering. I found the Plus fatiguing (after very short listens), and the clarity and presentation to be a good step down from the Andromedas. Comfort wasn't bad though.
Glad I wasn't the only one who felt the same. I found the Plus to have quite a muddy midrange compared to HD650s, a good frequency response except for an 8khz peak (not really noticeable outside of sweeps) but the moment I started cranking it a little bit or played a song with low dynamic range, I started to get really fatigued. The best things about them were the ergonomics and isolation. Also it did feel like guitar and violin string decays were pretty well resolved, possibly even better than 650s (always suspected mobo SPDIF into Mimby was blurrier sounding than USB using HD650s, Plus made it extremely obvious), but was lacking the clarity and timbre to make it sound real.
Anyone know what size Comply tips these use? Or can name another IEM with a similar tip size?
^Campfire Audio has similar nozzle size. Many do...
500 series Comply.
Separate names with a comma.