MEELetronics Balanced Armature HD In-Ear Heaphones: With Built-In Mic $60, Without Mic $40 + Free Shipping

To be clear, the A151 and A161P differ not just in the presence of the microphone. The A161 is an upgrade over the A151. So, you're not paying $20 for just a microphone.

I don't have either so can't tell you whether the A161 is noticeably better than the A151.
Here is the difference from my research according to folks at head-fi.org forums:

"The A161 is a slightly brighter sound compared to the A151. They share a very similar signature though. The A161s are much easier to drive overall, have better treble and bass impact and depth overall. It doesn't have the bass body that the A151s had though. Midrange has more details and clarity than the A151s. Take all this with a grain of salt as this is from memory. The A151s offered more of a warm and sweet sound, The A161 sound really isn't as warm as it seems to be just sweet for me. A little too sweet at times (just like the A151). Overall, I would say that the A161 is technically a lot better than the A151s. I can see why some may prefer the sound of the A151 to the A161 though."

Great & detailed A161P review [ifans.com] & discussion here [head-fi.org]!

For those not familiar with various IEM (in-ear monitors), there is an excellent thread posted by ljokerl [head-fi.org] that compares and reviews 274 different iem and breaks then down in categories. Enjoy your research!

Solid deal in my opinion. So, how do I get $10ff to apply to my A161 order? Would bite in a sec, even though I have other IEM already!

(2C26) MEElectronics A151


Reviewed Jan 2011

Details: First armature-based earphone from MEElec
Current Price: $75 from meelec.com (MSRP: $74.99)
Specs: Driver: BA | Imp: 27Ω | Sens: 111 dB | Freq: 15-20k Hz | Cable: 3.9’ I-plug
Nozzle Size: 3mm | Preferred tips: Stock bi-flange, stock tri-flange, Sony Hybrids
Wear Style: Over-the-ear or straight down

Accessories (4/5) – Single-flange (3 sizes), bi-flange, and tri-flange silicone tips and zippered clamshell carrying case
Build Quality (4/5) – The housings are plastic but seem quite sturdy. A short sleeve protects the braided cable, which is by far the best thing about the earphones. The cord soft, flexible, and very light – a pleasure to use while out and about. The straight plug is quite generic but has adequate strain relief
Isolation (4/5) – The nozzles are thinner than those of the other Meelec earphones and despite the bulbous housings, the A151 can be inserted pretty deeply. Isolation is very impressive with the bi- and tri-flange tips
Microphonics (5/5) – The flexible braided cable carries very little noise when worn cord-down and none with over-the-ear wear
Comfort (4.5/5) – Though the A151 was designed for comfortable over-the-ear wear, it can be worn cable-down as well. Either way the nozzles are angled and of adequate length and the housings are rounded at the front for comfortable insertion. The light and unobtrusive cables helps make the A151 a pleasure to wear

Sound (7.4/10) – The mid-range IEM market has undergone some drastic changes in the past year and half, not the least of which has been the rapid influx of high-performance dynamic-driver earphones. Back when the <150 segment was dominated by the likes of the Westone UM1, Shure E3, UE SuperFi 3, and Ety ER6, single-armature was the de-facto standard in the price range. Despite the relatively high cost and some inherent limitations of single-armature designs, there is still much to like about such setups. Armature-based earphones are rarely lacking in control or clarity and have some practical advantages, such as the ability to function in a fully sealed chamber. All this can be said about the new A151 from MEElectronics, a single-armature design priced to compete with the likes of the Soundmagic PL50, Westone 1, and Ultimate Ears SuperFi 5.

Starting at the low end, the A151 immediately takes on typical armature characteristics – speed, control, and clarity to match the best earphones in the price bracket. Bass impact is just ahead of the Head-Direct RE0 and on-par with the Sunrise Xcape. Bass depth and extension aren’t competitive with bass-heavy dynamics like the Eterna, Nuforce NE-700X, or MEElec’s own CC51 but control and texture are very impressive. As with most single armatures, the driver struggles to remain detailed at the limit of its sub-bass response but, as with the pricier Westone 1, there is a bit of added mid-bass punch compared to the Soundmagic PL50 or UE SuperFi 5. The slight bit of added punch makes the A151 somewhat warm for an armature and there is a very slight lower-midrange bias. Despite this, the A151 sounds very accurate and carries good detail and texture through both the bass and the midrange. The mids are fairly well-balanced – not too forward, but definitely not recessed. Clarity is similar to the Head-Direct earphones but the A151 lacks the added bit of brightness resulting from the emphasized treble of the RE0 and RE-ZERO. It is also a touch less crisp, producing smoother, thicker, slightly less transparent notes.

The treble transition is smooth and neither harshness nor sibilance is present. The treble itself is clean, clear, laid-back, and low on sparkle. The detail is there but it presented in a very non-fatiguing way. Compared to the brighter RE-ZERO, the darker A151 is less airy but also less fatiguing. Treble extension is mediocre and treble emphasis is no match for higher-end, more balanced armature-based sets such as the Ety HF3. There is also a bit of grain at the very top, likely resulting from the armature running out of steam at the very limit of its response range, but on the whole the A151 is rather soft-spoken for an armature-based earphone. The soundstage is similar in size to the Sunrise Xcape and Head-Direct RE-ZERO – not large but well-rounded and coherent. Instrumental separation and positioning are similarly good without being unnaturally exaggerated. Looking at the entire hierarchy of BA-based IEMs, the A151 reminds me most of the Klipsch Custom 3 – both have that slightly thick, dry, and full-bodied sound with an aversion to brightness and listening fatigue and a well-balanced presentation.

Value (9/10) – MEElec’s first armature-based earphone may not break any new sonic ground with its dry and accurate sound signature, but it delivers a very wholesome package of sound quality and functionality at a very reasonable price. The cable may just be the best I’ve seen on a sub-$100 earphone and the isolation, microphonics, and comfort all make the A151 a direct competitor of the much-pricier but similarly well-designed Westone 1. Fans of bassy, trebly, v-shaped, or mid-forward sound signatures would probably want to pick something else as the A151 is none of those things but if accuracy and low listening fatigue are priorities, the A151 competes with some of the better earphones in its price range.

Pros: High isolation, very comfortable with the right tips, excellent cable, solid sonic characteristics
Cons: N/A

(2B10) Fischer Audio SBA-03 / MEElectronics A161P


Reviewed Dec 2011

Details: BA-based IEM second to the DBA-02 in Fischer's monitor lineup; the MEElec A161P is identical in sound quality but differs in construction and packaging, as well as price
Current Price: $129 from gd-audiobase.com (MSRP: $129); $100 for MEElectronics A161P w/mic
Specs: Driver: BA | Imp: 16Ω | Sens: 106 dB | Freq: 20-20k Hz | Cable: 4.1' I-plug
Nozzle Size: 4mm | Preferred tips: MEElec triple-flanges
Wear Style: Straight down or over-the-ear

Accessories (2.5/5) - Single-flange silicone tips (3 sizes), cord wrap, and soft carrying pouch (MEElec version (4.5/5): Single-flange (3 sizes), double-flange, and triple-flange (2 sizes) silicone tips, over-the-ear cable guides, PC headset adapter, smartphone adapter, shirt clip, and clamshell carrying case)
Build Quality (3.5/5) - The shiny plastic housings seem nicely-made and feature metal nozzle grilles and long, flexible strain reliefs on housing entry. The cable is rubbery, below average in thickness, and lacks a cinch, which may make over-the-ear wear more difficult for some (MEElec version: cable is plasticky instead of rubbery. Thickness is the same but a cable cinch is present)
Isolation (4/5) - Above average and even better with aftermarket eartips (MEElec version: double- and triple-flange tips provide good isolation out of the box)
Microphonics (3.5/5) - Moderate when worn cable-down; low otherwise (MEElec version: cable is not quite as noisy but over-the-ear wear is made less practical by the microphone)
Comfort (4/5) - Extremely lightweight housings with slightly angled nozzles provide excellent ergonomics. The cable is less excellent, however, and a shirt clip or cable cinch should have been included (MEElec version: both a cable cinch and shirt clip are included but over-the-ear wear is made less practical by the presence of mic/remote)

Sound (8.7/10) - Until just a few years ago, the majority of single balanced armature earphones fell victim to shortfalls in frequency range and performance at the limits when compared to their dual- and triple-driver counterparts. Advertising a mid-tier single-BA earphone meant disclaimers such as 'full range' were an absolute necessity. This perception has since been seriously challenged by the reasonably-priced but extremely capable single-BA models released by Etymotic Research, Phonak, and now - Fischer Audio.
The SBA-03 is an impressive all-around performer, not just ‘for a single BA’ or ‘at its price point’, but overall. The bass is fast and resolving, as expected from a BA-based earphone, but it is also surprisingly punchy, even aggressive at times. Impact is greater than with the Etymotic ER-4S and ACS T15 but not quite a match for the VSonic GR07 or Fischer's own dual-dynamic Tandem. It has good depth and body but is also tight and controlled, with great clarity and good detail, though the latter lags slightly behind the pricier Ety ER-4S and ACS T15, partly due to the average dynamics and aggressive nature of the SBA-03.

The midrange is slightly forward but still balances out very well with the punchy low end. Detail level is good - not quite as impressive as with the Etymotic HF5, but then the SBA-03 doesn't sound as lean, either. It is still a crisp, very slightly dry earphone with good resolution and a fairly neutral tone. The aggression from the bass carries over - the midrange of the SBA-03 is anything but laid-back. Vocals are very prominent and guitars have good bite. Compared to the Tandem and VSonic GR07, the SBA-03 is a bit less smooth and much less full-bodied but also more raw and transparent, with no sense of distancing or veiling between the listener and the music.

The lower treble of the SBA-03 is reasonably prominent but not too peaky. With the wrong tips it can be a touch splashy but with a deep seal there is just some sparkle. Grain is mild. Gentle roll-off at the top completes the picture. Admittedly, the Etymotic HF5 is cleaner and again slightly more detailed in the treble but the two earphones have opposing profiles for a pair of single BAs, with the SBA-03 emphasizing the bass and midrange more so than (much of) the treble region.

The presentation of the SBA-03 is competent but not flawless Most noticeable when switching over from a higher-end monitor such as the GR07 or ACS T15 is the in-the-head positioning of all the sonic cues. The SBA-03 does have very nice instrument separation and accurate positioning across its stage but the sheer expanse of earphones such as the GR07, ACS T15, Sony EX600, or JVC FXT90 is just not there. The soundstage of the SBA-03 is average or even slightly above-average in size but the earphone achieves neither the air nor the ambience of the pricier monitors in my collection.

One last point worth noting - the SBA-03 is a very efficient earphone with high sensitivity and low impedance. Powerful sources such as the Cube C30 can be too loud even on the lowest volume settings and computers and other sources with a less-than-black background or high output impedance will be noisy. For a set of general-purpose computer earphones the similarly-priced Tandem does a much better job - it is less sensitive and more forgiving.

Value (8.5/10) - When a mid-level earphone performs as well as this one does, it draws comparisons with top-tier earphones, as in the review above, and those rarely play in its favor. The SBA-03, however, holds its own in many ways against higher-end products from the likes of JVC, ACS, and VSonic. Aside from the smallish headstage and average dynamics, the SBA-03 is easily a top-tier performer. What detracts from its value are the surrounding bits – the cable, which is stringy and microphonic, and the small selection of tips, none of which showcase what the SBA-03 is really capable of. Those willing to overlook these minor flaws will find a direct competitor to the Ety HF5 and Phonak PFE with more emphasis on the bass and midrange and less on the top end – a versatile signature and a great introduction to higher-end BAs. (note: the MEElec version corrects the tip issue by including an extra 3 pairs).

Pros: Wonderfully versatile BA sound
Cons: Mediocre cable, sub-optimal stock tips