I thought this thread is supposed to be all about ath M40x. 

Whatever works for you.  Enjoy!

First, the C5 is a big unit with lots of power.  I would use it from headphone out jack on your cell phone to the in on the C5.  Then try your setting Gain on Low.  Like I said, I don't believe Cayin designed this unit to be used with a cell phone.  Therefore, overkill.

Excellent explanation, and on point.

To my ears, overkill with a cell phone.  Best suited to a seperate DAP.

Yes, several.  X5 with Cayin C5, C3 with BH2, DX 50 with E12, among others.  Flat response is very close, unlike the M50x

Go back and read some of the other posts from people who had problems.  I cancelled and got my pay pal refund.

For those waiting for a refund from TOMTOP, I can only speak to my experience. Got a response from them after I cancelled, and it took 5 days to hear from PAYPAL.  Got me refund through Amex and all is well.  Good Luck! 

I got into the habit of never playing anything while charging.  It just seems to work out better that way.

Yes, run S5 headphone line out to C5 line in.  Headphone out from C5 to your hd600.  Set Galaxy volume at 3/4 to start and after turning on C5 raise its volume only slightly so as not to ruin your hearing. There could be a problem with using your S5 but you wont know until you try this. ...

I agree, no more TOMTOP.  I just received my notice this date from Pay Pal that I got a full and complete refund.

I agree, no more TOMTOP.  I just received my notice this date from Pay Pal that I got a full and complete refund.

As I remember the impedance of HD600 is 300ohm.  The NX1 will mot pair well with this fine headphone.  for portable use I would say the Fiio e12 series is or will be discontinued in favor of the A5.  the other unit I know will power your 600's is the Cayin C5 amp.  Hope this helps.

Its not about money or patience.  Its about doing business the right way, not on the come. Now, you know I would not insult your intelligence by suggesting you really believe what you just said. Enjoy!

It is a big deal when you do business.  I buy a product that your Company does not have but yet advertises they do.  I even pay an extra amount of money for expedited shipping. It's called less than honest at any price.

You are on point.  On my next trip to Lisboa, you will have to tell me where to get a great meal.  diverta se.

Why do people order from this TOMTOP when they keep seeing the same results on stock and shipment over and over again!  Find another supplier!  Good Luck, and don't be surprised if you get a note saying TOMTOP out of stock, or on hold.

Ordered mine through PayPal and after BS cancelled order.  Paid with Amex, and they will  make sure I get my money back.  Keep at it and you should get a response from them, hopefully.

What it means is, "We have no stock, and assume we will get some soon".  I cancelled my order.  Can't do business on the come. 

Thanks for the info, I'll check it out.  Like I really need another DAP anyway.

I just cancelled my order that TOM TOP had for a week. They sent my some BS we are out of stock and would you wait for another 5 days.  I will never do business with an UN-honorable company.  In reading the posts here, I'm not the first  person this has happened to, and probably not the last.

Wonderful combo!  I have 2 C3 units, one paired with C&C BH2, that is sadly no longer made, and the other paired with the the NX1A.  The C3 UI is awful but the sound quality being what it is makes it all worthwhile.  Wish the BH2 was still available .

Wait for it to stop blinking.  When all three are lit up the unit is fully charged.

Your headphones specified are open and not designed for mobile use at 300ohms.  For mobile use, I suggest your preference in htheadphones, 100ohms or less with a sensitivity near or north of 100. don't try to recreate  the wheel.  Enjoy!!

Be advised DAP's are for playing your special music.  However, if you wish to use open back high ohm headphones such as your 600 series, well get an amplifier to use with your DAP.  Good hunting!