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Sony 'Virtual Battery' technology |
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#1 |
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Forum Member
Join Date: Nov 2006
Location: The garden of earthly delights
Posts: 4,513
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Sony 'Virtual Battery' technology
I read that Sony's new premium walkman and the PCM-D100 recorder use something called virtual battery technology on the headphone output. This is designed to make the sound quality better.
I can't find anything about it - anyone heard of it before? I have the D100 recorder and it does sound good but there is nothing in the manual about it. |
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#2 |
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Forum Member
Join Date: Apr 2006
Location: North Derbyshire
Posts: 41,794
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Quote:
I read that Sony's new premium walkman and the PCM-D100 recorder use something called virtual battery technology on the headphone output. This is designed to make the sound quality better.
I can't find anything about it - anyone heard of it before? |
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#3 |
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Join Date: May 2004
Location: Reading
Posts: 27,926
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I've seen "Virtual Battery" mentioned in other contexts. Basically referring to AC-DC power supplies where (so the claim goes) the DC side is especially well isolated from the AC side. Presumably to reduce noise and hum and other crap from the mains supply.
So making the device being powered perform as though battery powered when it truly would be totally isolated from the mains. |
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#4 |
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Forum Member
Join Date: Nov 2006
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Thanks for the input. I found a little more about this from a Sony blog:
"The headphone amp incorporates a high-capacity, ultra-low impedance 0.33F (330000μF) electric double-layer capacitor (EDLC), equivalent to 750 times the capacitance of conventional capacitors. This stable power supply dramatically enhances the headphone power source, enabling high-quality audio to be reproduced even more faithfully." May just be marketing but I am interested in such technology. |
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#5 |
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Forum Member
Join Date: Apr 2006
Location: North Derbyshire
Posts: 41,794
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Quote:
Thanks for the input. I found a little more about this from a Sony blog:
"The headphone amp incorporates a high-capacity, ultra-low impedance 0.33F (330000μF) electric double-layer capacitor (EDLC), equivalent to 750 times the capacitance of conventional capacitors. This stable power supply dramatically enhances the headphone power source, enabling high-quality audio to be reproduced even more faithfully." May just be marketing but I am interested in such technology. Sticking a large capacitor across the power supply is hardly ground-breaking or new
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