图片比较小,我就把回复的内容贴出来:
其中一句话就提到:175瓦的版本是采用TO3金封功率管,而190瓦的版本用的非金封的功率管。
Dear Mr. Thomas,
The difference between 175 and 190 watts is not noticeable (just 0.3dB difference).
Your unit is a 190W per channel, built with new power transistors in a different casing. (the W-5-175W per channel used 10 x TO3 power transistor casing.
Now, you need to know that the power will follow the speaker load: If your speakers are rated with 8 ohm, you will have 190W per channel. If your speakers are 4 ohm, you will have 280W per channel available. Keep in mind that we (at Simaudio) are conservative with power amplifiers. Our production is always rated with the lowest level of distortion.
Thank you for your confidence in our product.
Sincerely,
Adrien Rouah
Worldwide Service & Sales Support
95, Chemin du Tremblay Unit # 3
Boucherville, QC, J4B 7K4
Canada
Tel: 450-449-2212 ext:215
Fax:450-449-9947
e-mail: adrien@simaudio.com
www.simaudio.com