N-scale decoders

I am wanting to put a decoder in a “decoder ready” locomotive which is a Atlas GP38-2. I am wondering if a decoder for just a GP38 will work in it? I have a MRC Tech 6 2.0 Sound Controller I am going to use as well, Would appreciate any information I could get on a good place to get decoders and who has the best selection. I feel like I am kind of a novice on the model RR world and just want to learn as much as I can and beg and borrow as much as I can.

Are you looking for a sound decoder or just a motion decoder?

For reputable retailers of DCC and other items, here’s my list:

Tom

I have a couple of Atlas GP 38’s and GP38-2’s. I used Digitrax decoders and all used the same decoder, specifically the DN163AO.

I use more than 37 mini gold Lenz decoder, they are small, powerful and extremely resistant and consistant in time.

They come whith or whithout harness.

Marc from Belgium

Non sound decoders for that engine are:

Digitrax DN163A0

TCS AMD4

NCE N12A0

Sound decoders:

MRC 1636

Digitrax SDN144A0