h********n
发帖数: 4079 | | d******0
发帖数: 22800 | 2 short answer: integrated amplifier= power amp + pre-amp
long answer:
"A power amp usually just takes one signal input (or two for stereo) and
amplifies it so that it can drive a speaker.
An preamp takes several
inputs, provides a mechanism to switch between them, a volume control,
some sort of tone and balance control (usually but not always), and puts
out a single signal at line level. You plug your sources into the
preamp, plug the preamp into the power amp, and the power amp into the
speakers.
An integrated amp is just a preamp and a power amp in the same box. If
it has a radio tuner incorporated as well it's called a receiver. If it
has tubes it's called a tube integrated amp or a tube receiver. " | D**********s
发帖数: 3139 | 3 具体一点，主要还是输入阻抗匹配问题，放大倍数，变压器谐波失真，crosstalk和信
噪比的区别
【在 d******0 的大作中提到】
: short answer: integrated amplifier= power amp + pre-amp
: long answer:
: "A power amp usually just takes one signal input (or two for stereo) and
: amplifies it so that it can drive a speaker.
: An preamp takes several
: inputs, provides a mechanism to switch between them, a volume control,
: some sort of tone and balance control (usually but not always), and puts
: out a single signal at line level. You plug your sources into the
: preamp, plug the preamp into the power amp, and the power amp into the
: speakers.
| h********n
发帖数: 4079 | 4 谢谢.
普通receiver上的pre-amp如果连上power amp, 有意义吗?
【在 d******0 的大作中提到】
: short answer: integrated amplifier= power amp + pre-amp
: long answer:
: "A power amp usually just takes one signal input (or two for stereo) and
: amplifies it so that it can drive a speaker.
: An preamp takes several
: inputs, provides a mechanism to switch between them, a volume control,
: some sort of tone and balance control (usually but not always), and puts
: out a single signal at line level. You plug your sources into the
: preamp, plug the preamp into the power amp, and the power amp into the
: speakers.
| d******0
发帖数: 22800 | 5 你要看它匹配不，像楼上说的。
一般receiver如果是integrated amplifier， 已经有了power amp， 而且，缺德带冒
烟的，不给出中间产物pre-amp的输出。要走hifi的话，还是pre-amp和power amp分开
买，加上电源净化， 就可以不停地分开升级各个部件。
【在 h********n 的大作中提到】
: 谢谢.
: 普通receiver上的pre-amp如果连上power amp, 有意义吗?
| h********n
发帖数: 4079 | 6 谢谢.
【在 d******0 的大作中提到】
: 你要看它匹配不，像楼上说的。
: 一般receiver如果是integrated amplifier， 已经有了power amp， 而且，缺德带冒
: 烟的，不给出中间产物pre-amp的输出。要走hifi的话，还是pre-amp和power amp分开
: 买，加上电源净化， 就可以不停地分开升级各个部件。
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