Tenhz P4 PRO (150 // 100 USD)
Purchase Link (Linsoul): https://www.linsoul.com/products/tenhz-p4pro
Purchase Link (Aliexpress): https://www.aliexpress.com/item/32932428994.html
This one is interesting, and I also did a good Youtube video about them! Of course, by good Youtube video, I mean a funny, light hearted, one, where I did not stutter, and did not have issues speaking my mind, as it happened to me once or twice, because, well, making videos can be a bit stressful sometimes.
At any rate, the tenhz P4 PRO is an interesting one, it is also a more expensive one, priced at 150 USD at launch, and being priced at 100 USD at the moment of making this review.
Youtube video:
With that out of the way, you have a really nice package with P4 PRO, you get a nice, leathery carrying case, in brown color, along with a good selection of tips, three sizes and two types, and a pretty high quality cable.
The construction quality and body type reminds me a lot of Kinera H3, which I reviewed before, and the style of the entire IEM reminds me of the Chi-Fi in general. It looks like the company had had a few prior releases, but none made it outside of China, with P4 PRO being the first one. This means that there is no way for me to compare the PRO with the original P4, but don't worry, with only the P4 PRO being around at Linsoul, as well as other shops.
Now, the comfort is the same as Kinera H3, and it has a type of fit that either works really well for your ears, or it doesn't work at all. More precisely, as the iBasso AM05 has the same build, this kind of design tries to be as ergonomic as it is possible, but it goes to far lengths for doing so, meaning that it may not scratch you the right way, if you have a more oddly shaped ear.
The cable is connected to the IEMs via MMCX connectors, but of good quality, and I'm confident when saying that if you're looking for a good cable, TENHZ P4 PRO has that. In fact, the cable is so awesome, that it is one of the few IEMs in this entire review compilation that I could recommend for its cable alone.
The overall signature can be described as flat, as it is marketed, although I could go one step further and call P4 PRO a mid-centric IEM, with an upper midrange emphasis. As you would expect, this kind of signature works best with foam tips, and if you're looking to make the sound a touch thicker, and also to make the bass a bit stronger, it is foam tips all the way. Overall, I found the clarity and detail of P4 PRO to be really great, and good enough for me to consider using them for rock and metal music as well.
The bass is a bit slow, a bit too tight, and a bit too little for my personal tastes. Unless you know you're fine with a little less bass, you're probably going to want to explore a different IEM, like Knowledge Zenith series, or Shozy CP, which comes at a similar price as P4 PRO. The bass works well if you like having a more neutral - reference presentation, but don't want the bass to be too analytical or dry, but instead prefer a slightly slower and more natural overall texture and presentation.
The midrange is slightly colored by the bass, even though the bass is lean and reference, it makes the midrange sound open, and clear, but also a touch warm. The bass doesn't feel so lacking, that it would turn the mids bright or sterile, it is exactly the other way around. The mids are sweet, and despite being presented forward, they have a good width to their soundstage, good clarity and detail, and a good overall texture as well. Both male and female voices sound natural on P4 PRO, and I'm actually impressed by them.
The treble is what I'd call a mixed bag. On one hand, it has good air, space to breathe, and compliments the wide, and almost holographic midrange. On the other hand, at times it can be pretty refined and nuanced. In fact, this is the interesting thing about P4 PRO, you aren't stuck with just one presentation, they can be really sparkly and bright, but also refined and gentle, they react really well with the source song.
I also noticed about P4 PRO that they don't have a great dynamic range, they sound pretty compressed dynamically. They also have a pretty precise signature, you cannot EQ them, and they react really poorly to EQ. This generally means that there is very little headroom for the drivers, and that the company spent all the time and effort possible to optimise the driver and overall performance of P4 PRO.
This also means that you cannot take them too loud, or they start distorting, and I noticed this on multiple occasions, this being true for most all-BA setups, minus some high-end ones, like Da Vinci X from Clear Tune Monitors, which sound amazingly good even at really loud volumes, despite being an all-BA setup as well.
Purchase Link (Linsoul): https://www.linsoul.com/products/tenhz-p4pro
Purchase Link (Aliexpress): https://www.aliexpress.com/item/32932428994.html
This one is interesting, and I also did a good Youtube video about them! Of course, by good Youtube video, I mean a funny, light hearted, one, where I did not stutter, and did not have issues speaking my mind, as it happened to me once or twice, because, well, making videos can be a bit stressful sometimes.
At any rate, the tenhz P4 PRO is an interesting one, it is also a more expensive one, priced at 150 USD at launch, and being priced at 100 USD at the moment of making this review.
Youtube video:
With that out of the way, you have a really nice package with P4 PRO, you get a nice, leathery carrying case, in brown color, along with a good selection of tips, three sizes and two types, and a pretty high quality cable.
The construction quality and body type reminds me a lot of Kinera H3, which I reviewed before, and the style of the entire IEM reminds me of the Chi-Fi in general. It looks like the company had had a few prior releases, but none made it outside of China, with P4 PRO being the first one. This means that there is no way for me to compare the PRO with the original P4, but don't worry, with only the P4 PRO being around at Linsoul, as well as other shops.
Now, the comfort is the same as Kinera H3, and it has a type of fit that either works really well for your ears, or it doesn't work at all. More precisely, as the iBasso AM05 has the same build, this kind of design tries to be as ergonomic as it is possible, but it goes to far lengths for doing so, meaning that it may not scratch you the right way, if you have a more oddly shaped ear.
The cable is connected to the IEMs via MMCX connectors, but of good quality, and I'm confident when saying that if you're looking for a good cable, TENHZ P4 PRO has that. In fact, the cable is so awesome, that it is one of the few IEMs in this entire review compilation that I could recommend for its cable alone.
The overall signature can be described as flat, as it is marketed, although I could go one step further and call P4 PRO a mid-centric IEM, with an upper midrange emphasis. As you would expect, this kind of signature works best with foam tips, and if you're looking to make the sound a touch thicker, and also to make the bass a bit stronger, it is foam tips all the way. Overall, I found the clarity and detail of P4 PRO to be really great, and good enough for me to consider using them for rock and metal music as well.
The bass is a bit slow, a bit too tight, and a bit too little for my personal tastes. Unless you know you're fine with a little less bass, you're probably going to want to explore a different IEM, like Knowledge Zenith series, or Shozy CP, which comes at a similar price as P4 PRO. The bass works well if you like having a more neutral - reference presentation, but don't want the bass to be too analytical or dry, but instead prefer a slightly slower and more natural overall texture and presentation.
The midrange is slightly colored by the bass, even though the bass is lean and reference, it makes the midrange sound open, and clear, but also a touch warm. The bass doesn't feel so lacking, that it would turn the mids bright or sterile, it is exactly the other way around. The mids are sweet, and despite being presented forward, they have a good width to their soundstage, good clarity and detail, and a good overall texture as well. Both male and female voices sound natural on P4 PRO, and I'm actually impressed by them.
The treble is what I'd call a mixed bag. On one hand, it has good air, space to breathe, and compliments the wide, and almost holographic midrange. On the other hand, at times it can be pretty refined and nuanced. In fact, this is the interesting thing about P4 PRO, you aren't stuck with just one presentation, they can be really sparkly and bright, but also refined and gentle, they react really well with the source song.
I also noticed about P4 PRO that they don't have a great dynamic range, they sound pretty compressed dynamically. They also have a pretty precise signature, you cannot EQ them, and they react really poorly to EQ. This generally means that there is very little headroom for the drivers, and that the company spent all the time and effort possible to optimise the driver and overall performance of P4 PRO.
This also means that you cannot take them too loud, or they start distorting, and I noticed this on multiple occasions, this being true for most all-BA setups, minus some high-end ones, like Da Vinci X from Clear Tune Monitors, which sound amazingly good even at really loud volumes, despite being an all-BA setup as well.