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What Headphone Amplifier To Build? B22 VS EHHA

post #1 of 7
1/23/12 at 4:21pm
Thread Starter 

 

Hello I would like to order a headphone amplifier construction kit from glassjaraudio, which will be used also as pre amp for the stereo sound system.
 
Which of the following suggestions do you think is most suitable?
 
-AMB B22
-Cavalli EHHA
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post #2 of 7
1/23/12 at 6:25pm

Which one do you think you will prefer the sound of? 

 

Now that you have answered build it. 

 

Personal opinion: 

You would have to be kind of crazy to use a fairly high power power op-amp as a preamp. Maybe its just me, but "preamp B22" is like saying that you are going to give your 95 year old grandma a ride down to the senior center to play bridge on a ducati 996. Its just something you don't do. Sometimes the best way is a nice cushy smooth ride. Not necessarily underpowered but with a certain measure of character. A Rolls-Royce comes to mind for similar ability to turn heads to the ducati but a better ride for grams.


Edited by nikongod - 1/23/12 at 6:53pm
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post #3 of 7
1/24/12 at 2:43am
Thread Starter 

I do not know, so I'd love to know what the differences between them.

The main use is headphone amplifier, secondary use would be to be pre-amp.

 

AMB's site indicated that one of the product use is as pre-amp.

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post #4 of 7
1/24/12 at 8:18pm

Just depend on your sound listening taste and the budget will spend:

Beta22 is pure solid state=fast&clean details&great on bass too, the kits will spend $500 easily & mostly more than that

EHHA is Hybrid(tube on front&mosfet on back)= sweet mids(great for vocals, violin) but lacks of bass & sparkling top, the kits will spend $300 easily & likely more than that too

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post #5 of 7
1/24/12 at 9:42pm


 

Quote:
Originally Posted by Tommy Thong View Post

EHHA is Hybrid(tube on front&mosfet on back)= sweet mids(great for vocals, violin) but lacks of bass & sparkling top


Respectfully, the EHHA has absolutely no lack of bass.  Not sure what a "sparkling top" implies or if it is a desirable characteristic.

 

Cannot comment on a B22. Have yet to hear one.

 

Suggest you seek out a meet or another member or two who have those products local to you so that you make your own informed decision.

 

Otherwise, take out the gold teeth and see how they roll....  

 

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post #6 of 7
1/29/12 at 8:29am

I would agree with JD regards the EHHA , it does not lack in bass nor top end detail. I do not own a B22 but the sound is easily comparable with the EHHA. The original EHHA does have the ability to adjust both open and closed loop feedback, this allows for some "tweaking" of the final sound. 

 

Now having said all that, nikongod makes an excellent point, both of these amps are capable of about 20W output into an 8ohm load.( if built with capabilities to do so - correct power supply choice , heatsinking etc )  In other words, they are akin to low powered speaker amps or high powered headphone amps themselves, you certainly don't want to use them as preamplifiers. 

 

..dB

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post #7 of 7
1/29/12 at 4:41pm
Quote:
Originally Posted by dBel84 View Post

 The original EHHA does have the ability to adjust both open and closed loop feedback, this allows for some "tweaking" of the final sound. 

 


The RevA version allows this as well. Although, socketing those resistors makes it a whole lot easier. redface.gif

 

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