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Headphone Systems Everything to do with Headphones

HA-PRO2
HA-PRO2
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Old 1st October 2019, 11:02 AM   #41
evonimos is offline evonimos
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Join Date: May 2019
Quote:
Originally Posted by PRR View Post
So we have three legs at 10.02 ohms, call it 3.3 Ohms.

This IS low enough to drive headphones satisfactorily. (It seems low to me.)
Thanks a lot for the detailed explanation.

I will not pretend that I understand much, but you gave me a nice start to do some more reading.

By the way, do you think I could use another (better?) opamp at stage position?
I have a couple of OPA1641 on DIP8 adapters.

Last edited by evonimos; 1st October 2019 at 11:13 AM.
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Old 1st October 2019, 01:51 PM   #42
AndresTC is offline AndresTC  Spain
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Join Date: Aug 2016
I'm using it to drive two beymas tpl150 to listen close and it sounds really good

Could you use it in mono and put one for each channel? thus increasing its power?

it would be a wonderful amplifier for compression controllers and in general very sensitive speakers
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Old 2nd October 2019, 06:46 PM   #43
evonimos is offline evonimos
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Join Date: May 2019
Are you using the HA-PRO2 to drive speakers?

I'm using it to drive my Sennheiser HD600 and HD559.
One is 300 Ohms and the other is 50 Ohms.

If you use it for speakers with an impedance of 8 Ohms, the current required would push that little headphone amplifier a bit too far..

Maybe you could use it as a preamplifier connected to a power amplifier to drive your speakers.
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Old 2nd October 2019, 07:10 PM   #44
AndresTC is offline AndresTC  Spain
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Well, nothing warms up ... and it sounds with very low distortion, the beyma has 100 db and I am 70 cm away from them I guess it will be for that reason if I get to a w I become deaf hehe
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