Total Score
Dunu SA6mk2’s Specs
Frequency Response: 5 Hz – 40 kHz
Impedance: 24 ohms @ 1 kHz
Sensitivity: 114 +- 1 dB @ 1 kHz
Total Harmonic Distortion: <0.5% @ 1 kHz
Cable : Hulk Pro Mini (2-Pin 0.78mm)
Plug Connector : Patented Q-Lock Plus Modular Plug System
Included Plug Terminations: 4.4 mm TRRS Balanced, 3.5 mm TRS Single-Ended
Build
Dunu SA6mk2 comes with a really big box. Everything in the box is very high quality. Especially the case quality is awesome, the inside is covered with velvet. There are more tips, they have different shapes and characteristics. It also includes one brush and 6.3mm converter.
Shells
Dunu Sa6mk2 has the familiar “big shells” of the Sa series. Although they are big, the fit is not bad. The shape is good to fit the ear. The isolation is quite good. Appearance? The wood-like surface is different for each iem and is unique to that iem. It feels epic and looks good at the same time. They feel solid in hand.
Cable
Dunu Sa6mk2 comes stock with the Dunu Hulk Mini. The Dunu Hulk Mini sells for 200 dollars. That’s a pretty good jest. The cable has a changeable jack. Comes with 4.4 and 3.5 (the 2.5 is going out of business) look and durability are very good. No microphonics. I must say that I found the sound transfer skill successful. Much better than the stock cable of many iem’s I have. About the build quality, I can shortly say that you can pull a car.
Sound
First of all, let’s see what this switch does. I can say that it slightly raises the lower frequencies and lower mids. Acoustically, there is a more fresh sound when the switch is off. When listening to hiphop or EDM, turning the switch on allows you to hear more sub. This hearable difference is not dramatic. But it’s a nice touch.
6 balanced armatures do a great job in terms of resolution. In addition to this, the detail level is above its price. Soundstage is spatially successful. Depth is enough, wide could be better. In-stage localization fidelity is okay. The sound is realistic but the separation is a bit weak. To put it simply, this is a critical listening iem, not really suitable for everyday use.
Another nice thing about this iem is that it is ideal for listening to any kind of music. But I would say it’s especially great for pop and rock. The bass guitar timbre is impressive. Dunu sa6mk2 shows its potential when paired with a better source. For this iem, an excessive increase in the source quality can give good results.
The sound signature is up for discussion. I can say that there is a mid-focused W shape. Vocals and violin are in the foreground, followed by guitar and wind instruments. In general, fretted instruments sound better than fretless ones. The preferred setting for the treble adds a chaotic atmosphere to the sound. It’s not bad, but it undermines the great potential that exists. On the other hand, the condition of the low frequencies is quite positive and the lack of dynamic drive is not felt. There’s not exactly a natural tone, but there’s nothing disturbing either. There are some tonal touches, some right and some wrong.
Bass
Details, resolution, texture. It’s really good. When the switch is turned on, the bass balance shifts from midbass to sub bass. That’s very good. Overall the low frequencies are both instrumentally good and punchy. They are well tuned and do a good job with all kinds of music. The Dunu Sa6mk2 has a textured and complete sub bass response.
Mid
The first point I’ll make is the wonderful lower mids, well separated from the bass. The lower guitar tones and the instruments in this zone sound lush and resolved. The separation is not bad, everything is separated but they are very close. Add to that the difference in volume and you get a great sense of depth, but the width is average. This is not a problem because you enjoy the overall instrument timbre and resolution. The female vocals could have been a bit behind. The upper guitar tones are also a bit too forward. Despite all this, all the detail and micro detail you hear is stunning. In addition to this, the depth perception I mentioned adds a mystical atmosphere and realism to the sound. There is a very good resolution throughout the mid frequencies. By the way, unlike other fretless instruments, the violin and cello have a wonderful timbre.
Treble
Good on the surface. High resolution, well placed and textured. But unbalanced in itself. 8Khz is high, and then what? The lower treble is uncontrolled and wobbly. Obviously the drop from 8Khz to 10Khz has negatively affected the sound, the cymbals are good but the air frequencies are not so good. But are the trebles bad in the whole presentation? No, it gives the expected resolution, detail reproduction. But they don’t provide enough freshness, they don’t give the necessary width in the soundstage. The extension is good for “8Khz” but not enough for the rest. I can’t say “bad” because the cymbals I hear are really nice and well worth the price. But the potential is wasted with wrong tonality when it could have been much better, especially for the lower treble. I would have liked to hear more “ss” at 10Khz and beyond, and they must have thought of that because there is a hill at 14Khz. Is it enough to save the situation? That depends on the person, I’m not satisfied.
Last Words
Dunu Sa6 is a good iem. Despite a somewhat tiring presentation and poor separation, it has excellent detail reproduction and high resolution. It has some tonal flaws, but overall it’s a reliable product that works well with any music. If you don’t have very solid tonal expectations, you may prefer this headphone. It’s not the first choice for everyday use, but it’s perfect for critical listening. It’s worth the price.
