The original, legendary HD 800! Amazing sound, good cosmetic condition with just a handful of tiny dent marks. Early unit, single owner. Manufactured and bought in 2016. Serial number is 12418. Gently cared for in a smokeless and child-free environment. Price includes UPS packaging and ground...

Refault,   Thanks a bunch. Very helpful. I am now leaning towards the ALO. Just a couple of final questions - how would you characterize the differences over the Duet on 1/ the degree of difference in width and depth to the soundstage 2/ high frequency detail/extension and 3/ the amount of...

Hi refault,   Thanks for your great impressions. Since you own both the Duet and the MkIII B+, your opinion carries a lot of weight. On hiss factor alone with sensitive IEMs, on a percentage basis, how much more hiss would you say you hear between tracks at normal listening levels with the ALO...

Great. That's a relief. One less investment to worry about.   Thanks for the heads up.   Regards, Ole.

Sam,   Would a firmware upgrade be available to current AK owners by shipping in their DAPs? How has iRiver handled firmware upgrades in the past?   Thanks, Ole.

Shotgunshane,   Thanks for the great input. I myself had an Algorhythm solo going into an ALO amp before buying the AK120. It really took the sound quality to a whole new level. And having an ALO amp right as we speak, I am definitely familiar with the noise level. I though perhaps they had...

Maricius,   Wow. Thanks a bunch for steering me to these impressions. Just what I was looking for. Boy, this is really a tough one as I do like a little bass slam and impact on the go. But these comments speak to what value even more, wide and deep soundstaging. That's why I went with HD800's...

Shotgunshane,   Noticed in your profile that you own the AK240. How does the Duet marry with this unit? I own the AK 120 B Mod and can't decide between the Duet or the Mark III B. Any thoughts on this would be greatly appreciated. Is the Duet better in a single-ended mode using the Solo DAC or...

Shigzeo,   How would you characterize the Duet vs the Mark III B+ in balanced mode with sensitive IEMS (mine are UE 11 Pros)? I am leaning towards the ALO as my AK120 B Mod is a little lean in the bass (line out) and the warmer signature plus bass "boost" is mighty tempting. Soundstage width...

Maricius,   Found the comments from rudi. Was unaware of this thread until now - thanks for pointing me in the right direction.   This thread is awesome! Will post some pics myself when I finally settle on the amp of choice (leaning towards the Duet but very tempted to go  Mark III B+ - that...

Rudi,   I own the AK120 B Mod and am looking to pair it with a balanced portable. I read elsewhere that you have compared the Mark 3 and the Duet. Would you mind telling me where I can find your impressions? Also, have you had the chance to compare these amps to the SR 71B?   Thanks, Ole.

Papiro2,   Thanks for the feedback. I guess my experience is perhaps driven by the fact that I am using IEMs. I keep the EQ on with boosted highs and lows and though the highs are decent and the detail incredible, the lower register lacks impact and "slam" (and I'm not even a bass enthusiast...

  Greetings midnightwalker,   I own the AK 120 with a B-mod from Vinnie. I am thinking of going for the Duet (currently I am running single-ended through an old Mark II while researching the right amp).   A couple of questions: - do you use IEMs with balanced connector and if so, how did...

That's great to hear. I am glad I spent the extra bucks to get the B-mod on my AK120. Now I am very seriously considering the Duet - it sounds like the current winner in the portable balanced category. Thanks again for the input.

Makes total sense. Portability is a key issue. Thanks for the quick reply. Your comment triggers one more question if you don't mind. Do you hear a noticeable difference when connected balanced mode? Some folks don't notice a difference in reviews of other gear - I have always been a big...