Help and opinions needed on pre-amp situation


For this one, I would like to hear from enthusiats instead of people who sell stuff. I’ve been using integrated amplifiers for all my years in this "hobby." I recently went to mono blocks- a pair of the class D Atma-Shpere’s to be specific. I’m using balanced XLR connections straight from a Lumin S1 streamer/dac/preamp into the mono blocks using Lumin’s LeedH volume processing deal. It’s a nice and simple setup with nothing else in the signal path.

The question is: am I missing out on better sound by leaving out an Atma-Sphere MP-3.3 tube preamp? Will adding a preamp improve, diminish, or retain the existing sound quality- as far as soundstage, imaging, depth, tonal balance etc is concerned? This preamp deal is not cheap (for me). Has anyone been in this situation? Did the preamp improve the sound, keep it the same, or make it worse? Am I better off just leaving it as-is with my minimalistic setup?

A couple of other things to consider:

My turntable is collecting dust since changing over to the mono blocks, I didn’t listen to vinyl often even with the integrated since my digital front sound better then my vinyl gear. If it made $ense, it would be nice to have the ability to listen to vinyl again.

At some point I may also have to connect a projector to my system to play audio. Then the issue becomes that projectors do not have balanced XLR output. Most are HDMI. I’m not sure if the MP-3 preamp will work or if a different preamp is better choice here etc. I’d like to keep with the same brand for obvious reasons if possible.

Has anyone been in this situation before and pulled the trigger? If you have- your input, suggestions, and opinions would be greatly appreciated.

veerossi

@veerossi

I am kind of in the same boat as you , do I need or want a preamp ?

I currently have a passive pre with input select and a stepped attenuator .

The question is what do I want from an active preamp ?  I already know that it has to have a stepped attenuator , I would like to have a mono/stereo switch and a balance control ( for older mono records ) but do I need gain ? If so how much ? I'm still on the fence about tube or SS since the phono pre is tube and the CD player has tubes in the output .

So you have to ask yourself what do you want or need ?  Tone controls ? left/right speaker switch , reverse polarity , a/b speakers or the same that I am looking for ?  

A preamp is for input switching. Goods ones are neutral.

Unless you are searching for a tone control.

Go to Ralph with your needs and desires.

Tnanks for the responses. Keep em' coming.

I have no idea how good or bad the Lumin Leed h voume control is in the grand scheme of things. The Lumin S1 was their top of the line/flagship offering prior to the X-1. In the menu it has a setting for "Analog Output Level" and has "Normal" or "Low" for choices. Not sure if that has anything to do with what @atmasphere Ralph mentioned about the balanced output.

Seems like results can vary quite a bit and nothing definite either for or against a preamp. This is going to turn into an experiment. Yes, @vair68robert: I don't care what people have to say: tone control would be great and same goes for balance and a/b speakers, channel gain (MP-3 has this), balanced, tube, and with a remote control for volume. 

I see PS audio has a no hassle trial period. Upscale Audio has a trial also, but not sure if theirs is hassle free or credit towards something else, restock, etc. Any input on the BHK preamp? I also have my previous integrated amp that I need to sell. PS audio take trades, so maybe that could workout. Moonshot here, but if anyone in Socal has an MP-3 sitting around that I can borrow, let me know. I'll pay. That would be fantastic and would put this whole thing to rest. If you know any other companies offer a no hassle/ no strings attached trials, please let me know. Whether new or used, I am not interested in purchasing something to find out waste of money and then be stuck with sitting on it and having to deal with selling it. Also what about these Vincent ones or Zesto? Will they be synergistic with Atma-Sphere or should i only stick to Atma-Sphere since that's probably what they are designed for? 

I used Googles Ai (Bard) to ask as well: 

The best preamplifier for Atma-Sphere Class D mono blocks is a matter of opinion and will depend on your personal preferences and budget. However, some popular and well-regarded options include:

  • Wyred4Sound STP Stage 2
  • First Sound Mark 3 SI Pre
  • Mojo Audio Mystique V3
  • Dartzeel NHB108
  • Lino Channel D3.3

I’d ask Ralph if he might have a demo MP-3 MkIII he might loan you if you agree to pay shipping. Well worth it I’d think.