This is a review and detailed measurements of the Sabaj A20h balanced headphone amplifier. It is on kind loan from a member. It is discontinued but I see it at one site for just $108.
The look is kind of outdated but it works. Back panel shows the odd choice of putting headphone jacks there:
Member had shipped this to me a year ago (!) but it was hidden on a shelf until he reminded me of it. Since the unit is not in production anymore, I am going to shorten the review a bit by focusing on balanced input and outputs. Unbalanced would be close.
The A20h has resistor ladder relays for volume control which should assure perfect channel balance.
Sabaj A20h Measurements
Our usual dashboard shows excellent performance:
Noise performance is good at unity gain but just slightly above average at 50mv:
Frequency response is nice and flat:
Best news about A20h is its huge amount of output power while keeping noise and distortion at bay:
This should let it drive just about any headphone with ease.
Conclusions
I regret not reviewing the A20h earlier given its excellent performance. Assuming the $108 price is real, it is a superb bargain given the functionality and performance.
I am going to recommend the Sabaj a20h.
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As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
The look is kind of outdated but it works. Back panel shows the odd choice of putting headphone jacks there:
Member had shipped this to me a year ago (!) but it was hidden on a shelf until he reminded me of it. Since the unit is not in production anymore, I am going to shorten the review a bit by focusing on balanced input and outputs. Unbalanced would be close.
The A20h has resistor ladder relays for volume control which should assure perfect channel balance.
Sabaj A20h Measurements
Our usual dashboard shows excellent performance:
Noise performance is good at unity gain but just slightly above average at 50mv:
Frequency response is nice and flat:
Best news about A20h is its huge amount of output power while keeping noise and distortion at bay:
This should let it drive just about any headphone with ease.
Conclusions
I regret not reviewing the A20h earlier given its excellent performance. Assuming the $108 price is real, it is a superb bargain given the functionality and performance.
I am going to recommend the Sabaj a20h.
------------
As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/