Fostex T60RP
Jan 18, 2024 at 7:54 AM Post #1,442 of 1,468
scratch. I see zeos using argon t60s with a30 pro so I should be fine.

just to be sure, I have 4.4 cable. the a30 pro hpa has XLR and 4.4, but both are SE output. is it safe to continue using my 4.4 balanced cable in a SE output? I am asking because maybe I am not googling correctly and I also forgot what situation can cause you to blow a hpa.
I am using an SMSL DO400 and it sounds amazing. I don't know what hpa means, but I bought a chinese 4.4 balanced to 3.5mm from aliexpress for about £12 and it works perfectly. I find it very difficult to hear the difference with different earpads, so I'm still on stock. I did try using AutoEQ on the headphoes which changed how they sounded, it wasn't better or worse.... just different.
 
Jan 18, 2024 at 9:47 AM Post #1,443 of 1,468
I am using an SMSL DO400 and it sounds amazing. I don't know what hpa means, but I bought a chinese 4.4 balanced to 3.5mm from aliexpress for about £12 and it works perfectly. I find it very difficult to hear the difference with different earpads, so I'm still on stock. I did try using AutoEQ on the headphoes which changed how they sounded, it wasn't better or worse.... just different.

hpa = headphone amp. I forgot to add I found out the answer on asr in a topping thread. I have an a30 pro on the way and looking for a d30 pro. I didn't know it was discontinued and the last 3 or 5 weeks missed out ~$200+- used sales.
 
Jan 20, 2024 at 11:36 PM Post #1,445 of 1,468
Change the baffles and pads and you will get plenty of bass.
 
Jan 21, 2024 at 6:05 PM Post #1,446 of 1,468
by baffle do you mean the part that holds the driver? I have some blue tack on the way I was going to damp the baffle with and experiment with the vents. I am considering getting some 1mm eva foam for the back of the cup.

gotta slow the spending for a month or two. just spent $600 on an A30 pro and D30 pro and the D30 needs to be picked up in the states. really looking forward to the D30 as many reviews and comments state the soundstage is awesome. not a big fan of cirrus logic DACs but otoh haven't heard a CL DAC for a while.
 
Jan 28, 2024 at 4:04 AM Post #1,447 of 1,468
I decided to make a balanced 4.4 cable for my Fostex T60RP.
I took the pinout from the manual that came with the headphones. I soldered the cable, and it converts the audio signal to mono - this is interesting. Where did I (or someone at Fostex) make a mistake? I downloaded the PDF manual from the Fostex website - the pinout is different, not the same as in the paper manual - it’s strange!
Then I disassembled the headphones and checked the pinout of the connector - it corresponds to the pinout on the PDF manual from the website. Fostex provided incorrect information in the paper manual that came with the headphones. If you want to make a balanced cable according to this manual, you will not succeed, the sound will be mono.
The correct pinout will be L+ R+ L- R- (wrong L+ R+ R- L-)
For an unbalanced connection, it does not matter how the negative contacts are located because they are connected into one, but for a balanced connection this is important.
 

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Apr 6, 2024 at 1:03 AM Post #1,450 of 1,468
for anybody interested I finally got my topping D30 pro. I have it connected with XLR to the A30 pro and the stronger signal really makes the T60s shine now. I probably do not need high gain anymore. I am also quite surprised with the D30 pro itself. I had low expectations but turns out to be a great Cirrus Logic DAC. nice detail and not bright. nice soundstage, sometimes a little floaty but in a good way. bass is adequate now, though rarely punchy but definitely fast. I think this is due more to the ample power and headroom though rather than the tuning itself. anyways, this combo could be endgame for some people including myself for awhile. I am also amazed at how well my zero reds sound now. the detail really shines on those now without being intense. made a great IEM sound even better.
 
May 20, 2024 at 10:37 AM Post #1,452 of 1,468
Hi. I am in the same position as you but very confused.

I am finding it almost impossible to get a 4.4mm balanced jack for my headphone amplifier, to go into a 3.5mm balanced jack to go into my T60RP argon.

I bought a cheapo cable from aliexpress which was meant to be for a DAP, that should have worked - it has 5 poles on the 4.4mm end, and 4 poles on the 3.5mm end. But it doesn't work When I push the 3.5mm end into my T60rp, it actually sends both left and right channels to both drivers - so on a stereo test for right, it comes out of both drivers, and on a stereo test for left it comes out of both. When I try that cable on another unbalanced set of cans like the SHP9500, the left channel comes out correctly, but the right stereo sound comes out of both.

I think the cable is junk.

The T60rp works fine with a unbalanced 3.5mm to 3.5mm stereo jack though.

Can you describe how you made your cable please in more detail?
Thanks!


I decided to make a balanced 4.4 cable for my Fostex T60RP.
I took the pinout from the manual that came with the headphones. I soldered the cable, and it converts the audio signal to mono - this is interesting. Where did I (or someone at Fostex) make a mistake? I downloaded the PDF manual from the Fostex website - the pinout is different, not the same as in the paper manual - it’s strange!
Then I disassembled the headphones and checked the pinout of the connector - it corresponds to the pinout on the PDF manual from the website. Fostex provided incorrect information in the paper manual that came with the headphones. If you want to make a balanced cable according to this manual, you will not succeed, the sound will be mono.
The correct pinout will be L+ R+ L- R- (wrong L+ R+ R- L-)
For an unbalanced connection, it does not matter how the negative contacts are located because they are connected into one, but for a balanced connection this is important.
 
Last edited:
May 20, 2024 at 10:49 AM Post #1,453 of 1,468
Related to my post above. Can anyone explain what the point of the stock T60rp cable is? why does it have a 4 pole connection on one end, and a three pole connection on the other. The female jack on the headphones can take a balanced 3.5mm input, why isn't it just 3 pole on each end? Thanks
 
May 20, 2024 at 11:08 AM Post #1,454 of 1,468
Related to my post above. Can anyone explain what the point of the stock T60rp cable is? why does it have a 4 pole connection on one end, and a three pole connection on the other. The female jack on the headphones can take a balanced 3.5mm input, why isn't it just 3 pole on each end? Thanks
For what it's worth, when I purchased my Fostex T60RP headphones a few years ago they came with some
nice extras. However, I still needed a 4.4mm cable so that I could use these headphones through the balanced
output of my ifi Ican Signature headphone amplifier. I decided to use a 4.4mm male to 3.5mm adaptor
so that I could use the 3.5mm to 3.5mm Fostex headphone cable that was included with my T60 headphones.

The adaptor has worked out well and I did not have to purchase another cable.
 
May 20, 2024 at 11:11 AM Post #1,455 of 1,468
For what it's worth, when I purchased my Fostex T60RP headphones a few years ago they came with some
nice extras. However, I still needed a 4.4mm cable so that I could use these headphones through the balanced
output of my ifi Ican Signature headphone amplifier. I decided to use a 4.4mm male to 3.5mm adaptor
so that I could use the 3.5mm to 3.5mm Fostex headphone cable that was included with my T60 headphones.

The adaptor has worked out well and I did not have to purchase another cable. It's made by a company called Geekria and it costs about $10.
 

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