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Author Topic: Sony HPA-1 / HPA-2  (Read 3031 times)

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Marvey

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Sony HPA-1 / HPA-2
« on: September 09, 2013, 12:34:57 AM »
Is the TI based chip amp in the Sony HPA-1 / HPA-2 any good? I have interest in the HPA-1/HPA-2, but I've heard that TI chip before, probably in less than ideal implementations, and I did not like it at all.

I wish Sony would make the HPA-X with their own S-master stuff. Damn Sony. That's just like them.
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zerodeefex

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Re: Sony HPA-1 / HPA-2
« Reply #1 on: September 09, 2013, 12:54:17 AM »
You mean the PHA-1? I can send mine your way if you're interested.
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Marvey

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Re: Sony HPA-1 / HPA-2
« Reply #2 on: September 09, 2013, 12:59:57 AM »
Yeah, that would be cool. I have a love / hate thing going with Sony shit.
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munch

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Re: Sony HPA-1 / HPA-2
« Reply #3 on: September 09, 2013, 01:07:39 AM »
I was just wondering the same thing when I saw it on the For Sale section here somewhere.
but 10 O output impedance sounds a bit much maybe for IEMs which I would be using it for.
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Marvey

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Re: Sony HPA-1 / HPA-2
« Reply #4 on: September 09, 2013, 01:21:01 AM »
10 ohms actually works well with UERM for me. UERM has a tendency of sounding a bit too dry. 50 ohms not so much.
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munch

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Re: Sony HPA-1 / HPA-2
« Reply #5 on: September 09, 2013, 01:43:59 AM »
hmm right. mine are 17 Ohm (RE-600) and are already not very dry. didn't sound all that good with the V-Moda DAC/amp combination, I thought. I believe it has a bit higher Output Impedance as well.
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Grahad

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Re: Sony HPA-1 / HPA-2
« Reply #6 on: September 10, 2013, 06:26:42 PM »
PHA1 sounded terribly slow to me, but so did the ALO MK3B. I wasn't particularly interested after that.

Didn't test the DAC portion though.
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funkmeister

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Re: Sony HPA-1 / HPA-2
« Reply #7 on: September 22, 2013, 12:48:51 AM »
From a technology standpoint, if we're talking about the TPA6120, the built-in buck-boost converter which makes the negative rail isn't as well matched to the positive rail as it should be. It runs out of juice a bit early and it's a bit noisier.

I do wonder what this would sound like if we did some hack-a-mod on it and bypassed the 10 Ohm output resistors with some bad-A transformer. Look... drawbacks all around, but I do wonder if it'd actually be cool. We use transformers all the time in live sound, so why not here?
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