I bought a new amp cable for the D42, with straight connectors. This was a mistake. one end needs to be 90 degrees.
May I just ask. Why? I have bought countless cables over the years (Even when I wasn't guitaring, I was sound-teching/light teching etc) and have never really seen a point in the 90 degree cables. If anything, they just make stuff more awkward for me. I have tried them, just prefer straight, gold plated, cables.
Not the case here but I have a Vox AD30VT amp. On that and similar models, the input jack is vertical into the top of the amp. One of the main knocks on this amp is that it is fairly easy, with a good tug on the chord, to yank the jack out of position. If loosened too much, the jack assembly can actually drop straight down into the amp. That results in a MAJOR pain. So, in that case, a 90 degree connector is almost a necessity - it greatly reduces the chance of torquing the jack inside the amp.. I also tie a loop through the amp handle before going into the jack. The combination of basement, beer, rock and suspect connectors demands all possible precautions.
The other knock on the 30VT, BTW, is the stock speaker. I was just telling The Lovely Wife, this very minute, that a Celestion G10 Greenback (or Vintage) would make a very nice Christmas gift indeed - nothing quite like new gear to tinker with over the holidays.
It's a great little amp and I love its versatility and tone (through the headphones). But you get what you pay for.