At the core of the 840A’s strength is a patent pending, Class XD (crossover displacement) technology.
This unique design gives pure Class A operation at low levels, moving smoothly into an enhanced version of Class B at higher levels. This system should not be confused with Class AB, which inherently generates greater distortion at high levels than a pure Class B design.
XD technology feeds a controlled current into the output stage in a new way so that the usual Class B crossover point no longer occurs at zero volume - the worst possible position in terms of distortion – but at a significant output level.
The result is a smooth and linear transition between the two modes of operation, which differs significantly from the abrupt, distorted gain transition of a Class AB amplifier. 本帖最後由 jasonbiker 於 2009-10-13 18:23 編輯
依部係classic D 當你玩過純A , 你就會知我講咩 .
Azur 840A (Version 2) Class XD amplifier features
Second generation proprietary Class XD technology
120W per channel into 8 Ohms or 200W per channel...
HP2210 發表於 2009-10-13 12:32 http://www.post76.com/discuss/images/common/back.gif
其實840A係Class XD, 是由 ClassA/B改良而來。
應該唔係真正Class D。
每種功放都有自己特點, 無話那種好與唔好!
最重要o岩自己口味!
我明白Class A賣味道, Class D就賣清爽。
係兩款好唔同特性的功放!
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