LoseHu The 710 only has one tube, and that tube is very expensive, making it difficult to purchase. Yaesu's traditional design doesn't include any protection for the tube; once a tube burns out, the repair cost and difficulty are both very high.
7300 refers to two pieces of tubing. In comparison, those two pieces of tubing cost only around 300 yuan each…
Secondly, there's the speaker itself. If you've ever taken apart a speaker, you know what a "disappointment" is. Because this speaker looks big, but in reality, only about 3-5cm of it is actually the speaker part; the rest is empty space. So someone once joked that you could even put a battery in that space!
Actually, if I spend a few thousand more yuan, buying an DX10 card would still be feasible. At least, if my 7300 breaks down, I would do that.