[tgx78]

You can not gauge technicalities from frequency response graph. Maybe waterfall plot but not from those above.

 

[IEMusic]

But why the EJ07 is so bad? Its technically and soundwise on par with Monarch and Clairvoyance.

There are a lot of people who don’t like the EJ07, hence the “short bus”. All that matters is what you think of it. He has the IER-Z1R rated as an “S”, but there are plenty of people that don’t particularly like it.

 

[Green Golden Retriver]

Been looking at a few list and many put IER-Z1R very high on thier list, also the U12t

 

[redrol]

There are a lot of people who don’t like the EJ07, hence the “short bus”. All that matters is what you think of it. He has the IER-Z1R rated as an “S”, but there are plenty of people that don’t particularly like it.

Thanks for saying that. It's a club for 'special' folks.

 

[mjoleksy]

What is your top 3 favorites QDC?

Omg, very tough! This is my best go at this:

1. VX - I have the special black ones only sold by certain vendors
2. Dmagic 3D
3. Gemini
4. 4SS
4. 5SH

I have 6 of their IEMs and 4 of their wires

 

[Green Golden Retriver]

Omg, very tough! This is my best go at this:

1. VX - I have the special black ones only sold by certain vendors
2. Dmagic 3D
3. Gemini
4. 4SS
4. 5SH

I have 6 of their IEMs and 4 of their wires

Nice. What is special about the black vx.

I always wanted to go demo the qdc but the showroom is quite far away.

also the shop told me all models of qdc need to be preorder now , no stock in thailand

 

[dleblanc343]

My current top 5 is:
KSE1500
Z1R
MEST
U12T
IER-M9

 

[Darkestred]

Nice. What is special about the black vx.

I always wanted to go demo the qdc but the showroom is quite far away.

also the shop told me all models of qdc need to be preorder now , no stock in thailand

Doesnt have qdc connectors. instead 2 pin.

 

[Green Golden Retriver]

Doesnt have qdc connectors. instead 2 pin.

Thanks.

Is the qdc unique only to qdc? That means typical 2 pin and mmcx cannot be used right

only have to buy made for qdc connector cable?

 

[Darkestred]

Thanks.

Is the qdc unique only to qdc? That means typical 2 pin and mmcx cannot be used right

only have to buy made for qdc connector cable?

I have seen qdc connectors on a few other iems so im not sure if its unique to qdc or someone else created the standard (if you want to call it that). qdc connectors are still a two pin but they are gapped differently and have an extended casing where cable connects to on the IEM. For the cable there is generally a plastic covering around the 2 pins just like there would be on a qdc styled IEM.

You would either have buy a qdc cable or buy an adapter to use with 2 pin. Not sure if such a thing exists for mmcx. And yes, as mentioned below (edit) you could use 2pins with qdc but generally that comes with caveats and there is a polarity difference.

Images courtesy of moon audio and twister6. Left qdc - Right 2 pin.

 

[IEMusic]

Thanks.

Is the qdc unique only to qdc? That means typical 2 pin and mmcx cannot be used right

only have to buy made for qdc connector cable?

AFAIK, “qdc” is a commonly used name for that type of connector, probably made famous by qdc, but it is certainly not unique to qdc now. It is a rounded, protruding 2 pin socket. I believe that actual qdc sockets have reversed polarity vs traditional 2 pin sockets, but as long as the right and left cables are attached the same way, it doesn’t matter. Regular 2 pin plugs will work with qdc sockets, but the plugs will stick out a lot from the IEM shell. There are also some qdc sockets that take the 0.75mm two pin plugs rather than the 0.78mm plugs, but I think the consensus is that it doesn’t really matter b/c that is such a minute difference, and manufacturing tolerances may even be more than that difference.

 

[doctorjuggles]

There are also some qdc sockets that take the 0.75mm two pin plugs rather than the 0.78mm plugs, but I think the consensus is that it doesn’t really matter b/c that is such a minute difference, and manufacturing tolerances may even be more than that difference

That 0.03mm actually makes a huge difference, if you use a 0.75mm on your 0.78mm sockets, be prepared for your IEMs to go flying across the room if you’re not extremely careful. And using a 0.78mm connector in a 0.75mm socket will result in either not being able to fit the pins in or, worse, stretching the socket.

 

[Green Golden Retriver]

Thank everyone for the explanations on qdc socket.

 

[Green Golden Retriver]

Btw between Z1R, andro , andro 2020 , U12T how you would you rank it by best treble?

 

[dleblanc343]

Btw between Z1R, andro , andro 2020 , U12T how you would you rank it by best treble?

S = U12t silky and fast highs
S = Z1R sharp and fast highs with great transients

A+ = Andro 2020 very linear, fast without grain

B+ = Older andros, sharp treble, peaky. Andro Stainless gets an A for it’s more even and smoother treble (still shimmery and energetic)

I’ve owned all besides U12t. Z1R is safely my favorite.