Unique Melody Miracle Review & Appreciation Thread - Page 49

Quote:

Originally Posted by longbowbbs 

How much time were on the HD800's? I have found they need some break in time...(200+ hours or so)

It was a demo unit in a shop, so I don't know, but I think they had it for quite a while. I compared HD800, HE-6, LCD-2, LCD-3 and TH900. From brightest to darkest it was: HD800, HE-6, TH900, LCD-2, LCD-3. In other words: HD800 is WAY too bright (too much treble and too little bass), HE-6 has too much treble, TH900 is balanced, but with a V-shaped freq curve and a dry treble, LCD-2 has too little upper mids and treble, and LCD-3 has WAY too little upper mids and treble.

I didn't have the Miracle at that time, but in terms of frequency response it would probably be a clear winner in this high end full size company. By winner I mean having an almost flat frequency response. To me, Miracle has a slightly V-shaped frequency response, but when I say slightly here, I really mean slightly - like barely noticeable. Maybe it is only a slight (sub) bass boost. This however is when driven by Soloist, which has less than 1 Ohm output impedance. Using the HM-801 with GAME amp (having 32 Ohm output impedance), it has noticeably less bass and also a little more treble.

In other words, the sound signature / frequency response will be determined somewhat by the output impedance of the amp. This is allegedly because it is a multi BA IEM.

Quote:

Originally Posted by Cryok95 

The T1s are FAR warmer than the miracles.. That's the biggest difference between them, IMO.

I haven't heard the T1, but comapring the freq graph to the HD800, I would expect, that the source you used driving the Miracle has a high output impedance, because it makes it sound brighter.

Quote:

Originally Posted by LarsHP 

It was a demo unit in a shop, so I don't know, but I think they had it for quite a while. I compared HD800, HE-6, LCD-2, LCD-3 and TH900. From brightest to darkest it was: HD800, HE-6, TH900, LCD-2, LCD-3. In other words: HD800 is WAY too bright (too much treble and too little bass), HE-6 has too much treble, TH900 is balanced, but with a V-shaped freq curve and a dry treble, LCD-2 has too little upper mids and treble, and LCD-3 has WAY too little upper mids and treble.

 

I didn't have the Miracle at that time, but in terms of frequency response it would probably be a clear winner in this high end full size company. By winner I mean having an almost flat frequency response. To me, Miracle has a slightly V-shaped frequency response, but when I say slightly here, I really mean slightly - like barely noticeable. Maybe it is only a slight (sub) bass boost. This however is when driven by Soloist, which has less than 1 Ohm output impedance. Using the HM-801 with GAME amp (having 32 Ohm output impedance), it has noticeably less bass and also a little more treble.

 

In other words, the sound signature / frequency response will be determined somewhat by the output impedance of the amp. This is allegedly because it is a multi BA IEM.

V-shape is very common to some IEMs and CIEMs, even though they are very neutral.

I don't think V-shape is because of IEMs themselves, but because of recording of songs and our device.

Like EX1000, its vocal sounds laid-back with Ipod Classic, but paired with AK100, its overal tone is just fine.

Quote:

Originally Posted by Alias Gu 

V-shape is very common to some IEMs and CIEMs, even though they are very neutral.

I don't think V-shape is because of IEMs themselves, but because of recording of songs and our device.

Like EX1000, its vocal sounds laid-back with Ipod Classic, but paired with AK100, its overal tone is just fine.

As I said, the V-shape curve is just slightly so. My impression is from using amps with both high and very low output impedance - and playing a VERY wide variety of music: pop, dance, jazz, classical, vocal etc. etc. - all tracks I know very well.

AK100 has a moderate or slightly high output impedance of 10 Ohms. Saying you think it sounds very balanced makes quite sense to me, because when using my Balanced Amp module, which also has about 10 Ohms in output impedance, it sounds very close to neutral.

Again: my point is that the output impedance of the amp used, will determine how the Miracle will sound.

Quote:

Originally Posted by Cryok95 

My bad, I though you guys were talking about the ACS T1 Triple Driver CIEM

Maybe it is my bad! I thought you talked about the Beyer T1. Sorry!

I was comparing full size cans in the previous posts, so I thought of the Beyer when you said T1 ...

Quote:

Originally Posted by Loquah 

The output impedance is really important. The true performance of any earphone/headphone (ie how it was intended to sound) requires a sufficiently low output impedance compared to the phone's impedance. Although not perfect, the 1/8 rule is a reasonable estimation.

If you're using phones with a device where output impedance is anything more than phone impedance divided by 8, you're likely not hearing the true sound signature and tonal qualities of the earphone/headphone.

I don't mean to be controlling because personal taste is super important, but for the sake of comparisons, can we talk about the phones when connected to optimal devices? (ie 0-2 ohm outputs for Miracles and similar 15ohm CIEMs)

Don't mean to rant, but I've heard the difference between good impedance matching and poor and it's night and day with the Miracles.

I completely agree to you. Miracles do really need to be matched accordingly or else it will sound awful.

Quote:

Originally Posted by Loquah 

The output impedance is really important. The true performance of any earphone/headphone (ie how it was intended to sound) requires a sufficiently low output impedance compared to the phone's impedance. Although not perfect, the 1/8 rule is a reasonable estimation.

If you're using phones with a device where output impedance is anything more than phone impedance divided by 8, you're likely not hearing the true sound signature and tonal qualities of the earphone/headphone.

I don't mean to be controlling because personal taste is super important, but for the sake of comparisons, can we talk about the phones when connected to optimal devices? (ie 0-2 ohm outputs for Miracles and similar 15ohm CIEMs)

Don't mean to rant, but I've heard the difference between good impedance matching and poor and it's night and day with the Miracles.

What would you recommend to use for the Miracle?

Quote:

Originally Posted by LarsHP 

AK100 has a moderate or slightly high output impedance of 10 Ohms. Saying you think it sounds very balanced makes quite sense tme, because when using my Balanced Amp module, which also has about 10 Ohms in output impedance, it sounds very close to neutral.

 

Again: my point is that the output impedance of the amp used, will determine how the Miracle will sound.

I think the output impedance of the stock AK100 is 20+   There is a mod done by Red Wine Audio which decreases it to 1. 

I have the Tralucent T1 amplifier (sorry to bring another "T1" into the mix!)

The Tralucent T1 has output impedance of around 0.1-0.2 ohm so it pairs beautifully with anything. It has the slightest hint of colouration (in much the same way as the Miracles have a hint of V-shape signature), but overall the T-T1 is transparent and smooth and makes the Miracles sound the best of anything else I've used them with (mostly due to impedance matching).

I've tried the Miracles with various USB-powered DACs attached to my laptop and am currently awaiting the return of my Miracles to test the Audioquest Dragonfly which is rated for IEMs down below 15 ohms. I've also connected it to my Cowon X7, iPod 5.5G, and Audio-gd NFB-5.2. Nothing comes close to the T-T1.

Of course, there are other amps out there which will do an equal or better job, but the T-T1 is amazing for its price (<$300) and performance combination.

Quote:

Originally Posted by Alias Gu 

V-shape is very common to some IEMs and CIEMs, even though they are very neutral.

I don't think V-shape is because of IEMs themselves, but because of recording of songs and our device.

 

weird