I had the original version briefly and have the Phi now. The difference is not huge. I EQ the lower bass range down sometimes even on the Phi, as it sometimes is quite overbearing. It's deliciously good either way, of course -- better than anything else I've heard. Makes my HD800S sound tinny...

Behold the ingenuity of my new "mod"! Materials: 1 knife 1 the spongy material holding the cables that came with the Abyss box Instructions: Cut the ****ing sponge intro a thin strip Place it under the headband of your $4500 headphones The sponge slightly distributes the weight so that...

I just got these. Super awesome, but super uncomfortable. My head begins to throb where it hits the band after a short while, and there's nowhere to run. :(

It does.   This one is better, though my Opus may be faulty... https://www.oppodigital.com/headphone-amplifier-ha-2SE/

Yeah, running 2.0.3.

I got my Opus#1 today and I'm quite disappointed so far. Might it be faulty? I have 1) Ultimate Ears Triple.Fi 10 Pro 2) Denon AHD2000 1) iDSD Micro 2) Oppo HA-2 3) Cowon D2 Both phones sound better on the first two (Micro & HA-2) and sound comparable on my 10 year old, then half price...

Powered, but their switches are far away at the back. Considered connecting their powers to a closer switch ...

Just picked one up and loving it so far.   Is there a simple way to make it so it only plays through the RCA or headphone jack? It'd be a shame to have to disconnect the cables whenever I want headphones only...  My last amp had a switch so I kind of assumed this'd have one also.

How's the sound compare to my ancient Cowon D2? (I'm using TripleFi 10 Pro)

(double post)

Great! Now I only have to figure out if it's better than my Zero DAC/Amp for powering my Denon AH-2000s and Bx5As.   Thanks.

Is that the norm now in these types of devices?

Thanks.   Do these devices have buttons to switch between RCA output and front headphone output or does connecting headphones silences the RCA output?

Is the 100 MK II now obsolete? 

Bump.