[zachawry]

   
 
lol yup thats hiss it power my alpha dog very well and the bass boost is a nice feature...I currently using my modded JDS C5D as a Dac connect to my B+ connect to the alpha...sound really good.

 
Ha. Well, if that's hiss it's hiss, I guess, but it's hard to even be sure it's there until you turn off the unit.

 

[Law87]

   
Ha. Well, if that's hiss it's hiss, I guess, but it's hard to even be sure it's there until you turn off the unit.

well I have the C5D and pico slim along with me so its easy for me to notice. The alpha dog do hear hiss past 12 o clock on hi gain.

 

[zachawry]

I don't get the blue LED any longer when the unit is running. That's a defect, right? 
Still get green upon charging. 
 
Also, man, the B+ drives my Alpha Primes like crazy!!
 
I was thinking about getting a Cavalli Carbon as an at-home solution when it comes out, but I'm not so sure it's necessary....

 

[Law87]

I don't get the blue LED any longer when the unit is running. That's a defect, right? 
Still get green upon charging. 

Also, man, the B+ drives my Alpha Primes like crazy!!

I was thinking about getting a Cavalli Carbon as an at-home solution when it comes out, but I'm not so sure it's necessary....

Yea mine is blue when running

 

[Mooses9]

Yea mine is blue when running

mine also is blue when running.

 

[Dopaminer]

I have a new-in-box RX mk3B for sale if anyone is looking for one . . .   

 

[SAR14]

Is the gap with b+ really huge ?

 

[bflat]

B+ adds:
 

1. Lower noise floor with highly sensitive IEMs. Still too much hiss for my SE846 though. I can still hear it with some music tracks.
2. Longer batter life by several hours. But the B never had a problem with long battery life to begin with.
3. More linear volume control and channel balance for highly sensitive IEMs.

 
If you plan to use for full size cans and don't care about the longer battery life, then basically no difference between B and B+. Some claim the sound is more refined with the B+, but that is highly subjective and depends on the rest of your components.

 

[Mooses9]

Eh I think B or B+ they are great amplifiers definitely one of the best that I have ever used. You know it's the best when it becomes so expensive to manufacturer that the company has to stop making it.

 

[Law87]

  B+ adds:
 

1. Lower noise floor with highly sensitive IEMs. Still too much hiss for my SE846 though. I can still hear it with some music tracks.
2. Longer batter life by several hours. But the B never had a problem with long battery life to begin with.
3. More linear volume control and channel balance for highly sensitive IEMs.

 
If you plan to use for full size cans and don't care about the longer battery life, then basically no difference between B and B+. Some claim the sound is more refined with the B+, but that is highly subjective and depends on the rest of your components.

I use an impedance adaptor with my westone W60 and the hiss is gone

 

[SAR14]

Thank you. I own the duet but I will probably sell it to try something else. I was interested by the b+ bht I chose the duet. Now I may have an opportunity to buy a b, and since I will not use it with IEMs it will do the job

 

[bflat]

Thank you. I own the duet but I will probably sell it to try something else. I was interested by the b+ bht I chose the duet. Now I may have an opportunity to buy a b, and since I will not use it with IEMs it will do the job

I'm not sure you are going to hear much difference with Duet and RX B given the history with ALO and CL. If you really want to try another premium portable amp with a different sound profile, look into RSA SR-71B if you want both SE and BO options.

 

[b0ssMax]

Thank you. I own the duet but I will probably sell it to try something else. I was interested by the b+ bht I chose the duet. Now I may have an opportunity to buy a b, and since I will not use it with IEMs it will do the job

What will you use the amp for? I have the rx and thought the duet was better with iem's due to the lower noise floor. Better if you could try it first.

 

[SAR14]

I canceled yesterday for the alo.
I am just curious and I tried a lot of things. But this time I will pass on the b version. I already owned a SR71-B and its level is well below the Duet for me, not mentionning it cost me a lot to sent it back to Ray to fix an issue he did not.
To answer all questions, my headphones are : ultrasone signature pro, Victor DX700 (maple cups and custom cable), Noble 4. These are the ones I chose to keep.

 

[Skyfall]

to my ear B+ is an improvement over the previous version.
 
Compare side by side it has a bit bigger dynamics, sound stage , a bit better separation and more refined.
The bass is more defined and it hits lower.
 
I am letting it go on F/S classified