The Ultra Cheap IEM Thread

My latest purchase is the Yinyoo V2, a Tin Audio lookalike with an interesting single DD and dual composite diaphragm. I have been testing it for about a week now and I would like to post my impressions of it here so here goes:

The V2 is a new product from Yinyoo. It comes attractively presented in a white box with a picture of the earphones on a blue background and the description “high-end in-ear earphones”. There is also a byline, “cute earphones, big power”, which I found amusing. The specifications are printed on the rear of the box.

In the box you get:

  • Yinyoo V2 earphones
  • Detachable silver plated 4 core cable, 2 pin connection
  • Three pairs of white silicone tips, medium bore
  • Three pairs of grey silicone tips, medium bore
  • Hard zipped carrying case
  • Warranty card

All in all, a good set of accessories.

The earphones are crafted from solid aluminium, the earpieces being barrel-shaped and closely resembling the Tin Audio T2 (which is a very popular design). They are very well made and solid, but also lightweight. On the rear of the earpiece is a vent formed from the Yinyoo logo, a very nice design detail. This should improve the soundstage.

The earpieces are engraved with channel identification and polarity indication and there is a small pinhole vent at the base of the nozzle. The 2-pin cable is of good quality and is a braided 4-core sliver-plated type which is quite supple, making it comfortable to wear either down or behind the ear. There is a metal Y-split and a straight metal 3.5mm plug, bth of which have the Yinyoo branding. I noticed no microphonics when worn in either style.

Technically, the V2 employs a single dynamic driver (described as a USA import) with a “dual composite biology” diaphragm. I assume this means bio-cellulose, a material used in this application. No details are supplied regarding frequency division.

After burning in for about 72 hours, I tested them with my Hifi Walker H2 DAP and Fiio A5 amplifier, using a wide range of music across various genres. The earphones were worn cable down. Initially I tried the largest grey silicone tips, which are very similar to the popular Spinfit tips which I have used to good effect but they lacked bass extension. After some experimentation with other tips including Spiral Dots, I obtained the best results with the large silicone tips from the TRN V80. These gave the best isolation and bass response without compromising the rest of the frequency range.

The immediate impression was of a well-balanced, neutral signature with some warmth in the lower registers and a clear, extended treble with no peaks. There was a wonderful sense of immediacy and “life” in the music with a brilliant transient performance. In detail:

Bass

There was a mild bass emphasis which lent an attractive bloom to the mid-bass but without sacrificing attack. Indeed, the transient performance here was excellent with a lively effect. The bass itself dug quite deep with good resolution and texture. There was some sub-bass rumble with good weight and natural decay. Using a test disc with spot frequencies, there was good output at 50Hz but reduced level at 30Hz, so I would conclude that the bass begins to roll off at around 40Hz. The timbre of different instruments was easy to discern which resulted in a very natural presentation, with orchestral basses and cellos having an attractive, woody tone. Drums had plenty of impact, on Peter Buffet’s “Sierra”, the bass drums were powerful and deep with good “slam”. The bass never dominated the sound but was in good proportion to the rest of the range.

Mids

The V2’s midrange is the star of the show and was open, clear and expressive with good levels of detail and resolution. The soundstage had good width, depth and height, allowing a clear sense of positioning of instruments, especially in classical music. In Holst’s “Saturn” from The Planets Suite, conducted by Herbert von Karajan, the orchestra was laid out very impressively giving a real impression of being in the concert hall. Woodwind was pure-sounding with the timbre of the different instruments clear and distinct. Detail retrieval was well above average and the overall smoothness made it possible to listen for long periods without fatigue.

Treble

The treble had good clarity and impressive extension. At no time was there any harshness or piercing sounds. Due to the single-driver design, the transition from the mids to the treble was seamless. There was a good sense of ‘air’ and separation with an attractive smoothness giving an overall relaxing presentation. There was plenty of fine detail, with the shimmering brass and complex percussion sounds in Albeniz’s “Suite Iberia” performed by the Cincinnati Symphony Orchestra coming over very clearly with superb attack, enabling every strand of the production to be followed.

The V2 is a superb earphone with a sound quality punching well above its weight. It has a well-balanced signature and avoids the “V-shaped” profile found in so many current models. This kind of quality could command a much higher price. With its neutral sound balance and excellent clarity, its superb build quality and a good range of accessories, it represents excellent value. I have purchased seven different IEMs from Yinyoo and this is definitely the best so far, and indeed one of the finest IEMs I have heard to date.

To sum up:

Pros

  • Superb build quality
  • Accurate and neutral sound signature
  • Well-balanced bass
  • Excellent soundstage
  • Clear open treble
  • High quality detachable cable
  • Good range of accessories
  • Reasonable price

Cons

Nothing of note, especially at the price

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