- Comfort / Noise isolation
- Sound quality: In this price range, it has a great sound view and has a natural clear high resolution sound.
- Image of frequency characteristics (Test operation)
- First impression
- Efficiency is high and it can sound sufficiently with a smartphone, but there are large changes due to volume
- Mild, easy-to-listen warm midrange with clean, transparent and elegant strings (Franchouchou - "To my Dearest")
- Smooth and flowing sound, clean hi-hat（LiSA - "crossing field"）
- Natural space expression（Yoshi Horikawa - "Crossing"）
- Deep and clean space（Falcom Sound Team jdk - "Dark Temple of Espina"）
- Recommended articles
Comfort / Noise isolation
|Frequency response range||9～40000Hz|
The earpiece is made of aircraft-grade aluminum and is extremely lightweight. In addition, the nozzle design is conscious of custom IEM, and the fit is good and the noise insulation is not bad.
This first impression test is performed using FiiO M15.
- NA1 Earphone*1
- 0.78mm 2pin 5N cable*1
- User guide*1
- Storage box*1
- Balanced ear tips(S, M,L)
- Bass ear tips(S, M,L)
Sound quality: In this price range, it has a great sound view and has a natural clear high resolution sound.
Image of frequency characteristics (Test operation)
※The "Image of frequency characteristics" is a reference information for the purpose of reviewing the image of the frequency distribution personally for the sake of review. The measurement method and the measured data are very rough and lack strict reliability and accuracy.
This time, we check the first impression using the largest silicon balance type among the included eartips.
The first thing to note is that these earphones are efficient and vary greatly with volume control, so be careful, especially if you're setting the gain high with an amplifier or high-performance DAP. On the other hand, you can listen to music at a sufficient volume even with a smartphone.
This earphone has a very natural warmth and a monitor-like resolution with good sound visibility. While suppressing the metallic touch that easily leads to an artificial atmosphere, it has a glossy sound with a moderate attack feeling from the mid-high range to the high range. However, the highs decay mildly relatively quickly, with some consideration for the sweetness of the mids, but on the other hand, they are not completely closed and you can feel a sense of openness in high places.
For example, I listen to the song "To my Dearest" by Franchouchou. At just the right volume, you can hear the music while the low end gives enough warmth. Vocal focus is good, with natural sweetness. The consonants are not very emphasized and have a mild voice quality, but the breath is crisp, the details are good, and there is no difficulty in listening to the lyrics. It is a gentle voice with a mild calm atmosphere, but it also has a little flourish and not a dark feeling.
But what I want to emphasize here is the sweet space which has a very glossy luster, a soft and slightly gorgeous piano with a gentle sound that is not strongly driven, and an elegant string that does not overemphasize its overtones. String music has a height, but the overtones are not emphasized and the rubbing feeling is not strong, so the core has thickness and softness, and it shows an elegant and rounded growth. The piano is also glossy enough, but it is connected to the low frequencies, sinks well, and sounds rich.
The mids are a little clean, so there is a little sense of depth, and the slope is slightly emphasized towards the mids and highs, so the sound is a little stretchy, the space has a transparent atmosphere, so the separation is not bad. On the other hand, the low frequencies are gently connected, and the warmth of the space is subtly colored.
In this pair, the lows are not strong, and the higher the volume, the more the mids and highs extend beyond the lows. Therefore, the lows are not heavy and rich, but they are warm enough and thick. The drum kick swells a little so it supports the sound field like a membrane at the bottom. It is not tight, but the rhythm is solid.
Smooth and flowing sound, clean hi-hat（LiSA - "crossing field"）
Listening to "crossiing world" by LiSA, the sound of the electric guitar is a bit punk and has a strong presence. But the edges are smooth and not sharp. As mentioned in the previous section, the kick sounds like a membrane, but the rhythm is good and there is an attack. For that reason, the pops were mild, but rock gives us a lively and tight atmosphere. The electric bass is a bit deeper and darker, but it may not always be strong.
The rock sound of this earphone is generally more punk rock-like funky than hard rock. On the other hand, the high part of the high frequency decay is fast. The hi-hat has a high tip, but it is transparent and clean with no flashy air. Therefore, the distortion sound of the guitar edge that rises punkly is not buried in the hi-hat and it is hard to hear, and the snare attack can be heard well.
The snare has a slight reduction in body rumbling, so it feels a little light and bright and has a good snappy feel. It has a lively sound with a slight rhythm and a flowing feeling.
Natural space expression（Yoshi Horikawa - "Crossing"）
The width of the left and right sides of the sound field itself is not very wide, but seems to be slightly wider than the interaural width. Depth is not too much emphasis. Therefore, when you listen to this binaural sound source, the sound is a little closer and it seems that the immersion is high. Because the floor is a little closer, the sound can be heard slightly close to the ground, but it has a very natural spatial representation.
The engine sound of the motorcycle is quite natural, and the rhythm sound is not bright and jangle unnaturally, which is connected to the recorded environmental sound and naturally. The position of the line of sight is set slightly below, but the sound field seems quite natural.
Deep and clean space（Falcom Sound Team jdk - "Dark Temple of Espina"）
The midrange has a good connection to the lows, so you can feel the sinking in the sound, and can feel the solid gravity of the piano and string sounds in this song. The thickness of the sound is sufficient and it is glossy enough, but it does not glitter too much, so that the piano sound and string sound maintain a transparent warm glossiness, and the sound of the synthesizer is sweet.
Since there is a natural degree of spatiality, the sound is well organized without turbidity, which is heard with just the right distance to immerse. This pair is a good way to play the assembled song in a natural atmosphere, and is suitable for soundtrack songs.
The spatial expression is wonderful, and the tone atmosphere should sound relatively natural. The adjustment of the high range is also good, the overtones do not sound too much, the sound does not shine excessively, it is mild and easy to hear, but the vividness has been adjusted enough and the sound image is very easy to follow. In terms of sound quality, this pair has a sound that is close to a truly versatile monitor system in this price range, and yet has a solid listening taste, it can be said that the earphone is close to the ideal form in terms of spatial expression and listening comfort.
If you want to know more about NA1, you may find what you are looking for in my Japanese review.