Thank's to share your impressions :thumbsup: The BB 2604 show a vary good performance in the mids range with good details and giving full body tho the voices, the highs are more recessed or better to warm to stand up. The strange thing is that the bass sims a little dry respect to the others BB...

Glad to be helpfull. :) Ali is my principal source too. I buy the same opamp by different well rated sellers looking at the reviews and do many test to be shure are original. Pay attention some sellers write they are manufacturers and not resellers. The simplest test you may do is to try to...

I've finish my my personal sonic sintetic reviews of all the opamps I've. For who that could be interest: https://www.head-fi.org/threads/dual-op-amps-sound-test-on-dap-and-usb-dac.966422/ This is my last post on this forum. Have fun and good music to all. :)

I've finish my my personal sonic sintetic reviews of all the opamps I've. For who that could be interest: https://www.head-fi.org/threads/dual-op-amps-sound-test-on-dap-and-usb-dac.966422/ This is my last post on this forum. Have fun and good music to all. :)

Great review of a great iem! I fully agree with you. :thumbsup:

I've not experience with the Burson opamps, in my Aiyima A3 Iìm testing the Muses 01 in the I/V stage and works fine velvety and detailed, since the huge dimension of the Burson V6i I imagine them used in a more big enclosures, if I have the possibility I will try in the future the V5i-d. Has...

If you are looking for something not exotic you may try the TI NE5532P or the Philips NE5532N or take a look at the LM4562NA/LME49720NA/LME49860NA as a straight 5532 replacement. If it may help you I have done a comparative test you may found at this link...

Always for those how are interest in dying ther DAP/DAC I have done a comparative test of all tree LM4562NA/LME49720NA/LME49860NA, teorically the same opamps, and I may say that they don't sound the same.

I have done a comparative test of all tree opamps dip socket and I may confirm that they don't sound the same. If someone is interested this is the link: https://www.head-fi.org/threads/dual-opams-audio-test-on-dap-and-usb-dac.966422/

Moved in the tread post.

To share my impressions on the replaciable opamps in the DAC/DAP in more coerent forum way I've open a personal new tread dedicated, for those that could be interested this is the link: https://www.head-fi.org/threads/dual-opams-audio-test-on-dap-and-usb-dac.966422/ Thanks all.

Moved in the tread post.

I've choose to open this thread 'cos as many others forumers I like dying and my couriosity about opamps may influence the sound of a DAP or DAC. Many manufacturers now offer sockable opamps and suggest better opamps solutions to give to the consumers the possibility to increase the...

Serching on Ali by name you may find many options, this is one link with reviews: :wink...

A new dongle Just arrive at home. :) The Jcally JM7 dac ES31993, cheap, very well sounding and more powerfull then JM10.😉😁

Happy new year :) I find the 7HZ 71 dongle DAC AK4377 quiet good, it has 70mv at 32ohms, cost less then half price then Sonata (178mv at 32 ohms) but has less then half output power. An alternative could be the Jcalli JM10 pro DAC CS43131 95mv at 32 ohms.

Hi AmericanSpirit, very interesting comparison,. I don't know if you have the IKKO OH1 but I'm wondering about the sound comparison with the HEXA. OH1 has a titanium coated dd, by the frequency responses comparison it seems that also if the mids are more recessed the male vocals may benefit by...

Great helpfull informations full of passion for our hobby AmericanSpirit! Thank's for sharing! :gs1000smile:

Hi all, for who is interested I have done a test on a different manufacturers NE5532 op amps in the same conditions in The OP AMP ROLLING Thread. :) https://www.head-fi.org/threads/the-op-amp-rolling-thread.146018/

Hi all, I have done a test on a different NE5532 op amps in the same conditions. I've used the Ziku HD X10, only one op amp socked, with IKKO OH1 iems, not a tecnical test, only sound perceived differences. To be shure I've try 2 of every different 5532. JCR 5532D: Deep bass extention not...

Very nice Tzenn, I will investigate 'cos there are many 47amp kits maybe there is one with a buster opamp. 👍

Interesting. 47 amp is a kit?

Always looking for alternative opamps for the Ziku HD X 10 finally I've at home the BB OPA2227P, an opamp projected to works with a battery supplied equipments (as the AD823AN I'm waiting for). It not only has a lesser battery consumption but show a very interesting sonic performance (after a...

Hi Superuser1, Baskingshark just give you a very good choice, as a more cheeper alternative, not only for you but for all like as me that are in a budget, I will share my experience with the Aiyima A3 a DAC with a very good price/performance ratio. I have it at home by a few days to substitute...

To try to give you an idea I may tell you the volume needed to drive the E4000 with a MI9 Lite at a good sound impact. JM10 90,% 7hz 71 80% Avani 78% All this dongles have nice power, but I suspect they are not the top to drive demanding headphones with high impedance. Reading Andy's review...