Just to let you guys know I love this FM-DP1 preamp. I’m have so much fun with this preamp…great product. Physically larger output transformers generally sound larger, since they have a larger window for tone to flow through. The FM-DP1 Tube Preamp is a dual channel dedicated guitar preamp for stage and studio use.
You guys sure know how to package; I think that box could’ve fallen off a ten-story building and the amp would’ve survived. The preamp uses two 12AX7s with DC on the filaments to help control noise. The 2 watt power amp section is a wonderful feature! The tone was ok, but it was a one trick pony. Note that the incoming line voltage directly affects all of the voltages in the amp; you may want to read the line voltage occasionally to see if this is happening. Basses used were as follows: Parts P bass (black bass): Bill Lawrence P46, DR flatwounds.
Quiet as a mouse and full of great tones. Be assured I am pleased with the amp you built for me. We will put it through its paces when the season begins in May. Просто сделаем несколько отверстий в диэлектрической основе и в них будем садить ножки элементов. What you’ll be shooting for is a range of adjustment that goes from LESS voltage to MORE voltage than is set by the (existing) fixed resistor. First off, let’s examine what an output transformer is and why someone would inquire about replacing it. The preamp’s controls were set at T: 2, M: 10 and B: 2. To me, this allows for the most transparent sound while giving the best tube breakup. The trim in back came in handy for a particularly sensitive power amp I own.