Up for sale here is this PD01 tone control preamp board rebuild set for the Marantz 4300, Marantz 4400, or Marantz 4270. This is all the parts you need to rebuild a Marantz 4270/4300/4400 PD01 board, which is the little vertical board attached to the back of the tone control board. Over time the PD01 board starts developing issues with capacitors and transistors, and often the old parts are weak and failing. We will make them new again!

If your receiver has a background hiss or other background noise, pull out the rear preamp jumpers and see if the noise goes away. If it does, then this kit will probably fix your problem.

This kit includes all 12 capacitors and all 8 transistors. These are all high-quality brand new genuine parts. The capacitors are all Nichicon Muse bi-polar and Wima film caps at the same uf and improved voltage ratings, and the transistors are Onsemi KSC1845FTA and KSA992, which are the correct subs for the original transistors. These are extremely high-quality parts, the same ones I use when I rebuild Marantz gear.

I will include surprisingly well-written instructions, but this is a moderately complicated repair, and you should know what you're doing and have a decent soldering iron.

US shipping and handling is $5, and international is $18, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.

Looking for more parts? I have power switches, feet, pushbuttons, top case screws, bottom screws, faceplate screws, white LED fuse lamps, blue LED fuse lamps, 6.3v bi-pin bulbs, 8v bi-pin bulbs, 12v bi-pin bulbs, wired 8v 60ma bulbs, new power cords, new main capacitors for the Marantz 1060/2230, wired Pioneer speaker plug replacements, new 630v yellow film capacitors at 13 different values, a large variety of transistors for vintage stereo repair, and more. Just use "add to cart" on everything you want and then check out for combined shipping.