As the chart linked here shows, even if you are on double blue (which seems unlikely with iems) you still have 10 db of headroom to 0, and much more power available after that...

For iems/headphones? None. For speakers, it depends on what you are driving.

You could always use an optical converter like this: https://www.head-fi.org/threads/chord-mojo-2-thread-___-product-released-january-31-2022-starting-on-page-95-of-thread.885405/page-609#post-17795926

Maybe it’s the high output impedance of the Audio-gd? The specs say 100/200 ohms, which is much higher than the E3.

The bass impact is on the order of dynamic headphones, and more than the Noire’s. You can feel the impact when it’s there, like a dynamic driver. The soundstage is better presented, I think, though I am not typically listening for wide soundstage. It’s not artificial sounding though, like Hedd...

I haven’t heard the Ether Flow, but probably not. But I’m sure the Mojo2 DSP could help you if you felt you needed to tune the frequency response on those.

I had a modified HE-6 for a long time. Assuming I was driving it correctly (which according to many is impossible!) I preferred the E3, and even the Noire’s. I know open vs closed, but I sold the HE-6 also after the E3, along with the Heddphone 1. I only kept the HD-650 (classics!) and the Focal...

I moved from the Noire to E3 (and sold the Noire, along with a couple other headphones). There s more sub-bass and bass detail in the E3 than the Noire, which have a mid-bass hump. E3 has this a little bit, but I’ve become really addicted to a slight tweak (using Mojo2’s DSP)...

IMO, Mojo2 is a great portable solution for E3. Plenty f power, dynamics and DSP, if you need it.

No one needs another headphone…but everyone needs an E3. Tell us how you like it when you get it!

The digital 1s and 0s are transmitted faithfully through the USB to optical conversion. The noisy RFI that travels along the conductive connection is broken by converting to optical but the bits are all there (up to 192kHz).

For very little money you could try a USB to optical converter, which will feed digital without any electrical noise. Something like this: https://www.amazon.com/gp/product/B07VSFBT82/

All this battery talk now… I got my Poly when it was first released (and then the replacement for the power on issue a year later in March 2018j. I’ve used it pretty much daily for about 90 minutes with Mojo and now Mojo2, charging to full along with Mojo/2 when it gets to red. They both seem...

It would be great to see your notes. Moon Audio had a Mojo replacement some years back when I needed it.

Mojo2 is a good pairing. Small difference moving from Mojo2 to TT2, and it’s not about power.