Preamp suggestions for Atma-Sphere Class D Monoblocks


As I impatiently await the arrival of my Atma-Sphere class-d monos, I am writing to solicit opinions from experienced members on this site. Balanced inputs and outputs as well as the ability to connect a subwoofer are important. Headphone amp would be nice but not critical. Ditto for built-in phono. These are some of the tube and solid state units I am considering (not necessarily exhaustive):

  1. Atma-Sphere MP-3 mk3.3
  2. Cary SLP-05 (ultimate edition, if I can find a pristine used pair at a good price)
  3. Modwright LS-100
  4. PrimaLuna EVO 400
  5. Supratek - Champagne or 6SN7 Cabernet - I have no idea what the difference between these two are and the website is not helpful at all
  6. Anthem STR
  7. Benchmark LA-4/HPA-4
  8. Bryston BR-20 (or one of their purely analog variants - BP-19?) - I am hesitant to bundle streaming and dac into a preamp
  9. NAD M66
  10. ?

I will initially use the Bel Canto DAC2.8 as a dac and preamp with an Auralic Aries G1.1 as the streamer. My speakers are Totem Acoustic Forest Signatures, sub is a REL s/510 that I seldom use. I am unsure whether I can use the speaker level connections with the A-S monos (my current Bel Canto Ref510S class d amp has a chassis grounding screw to which I connect the REL’s ground wire).

Philosophically speaking, I have owned a wide range of equipment over the years - everything from "measurements above all" type gear (a full Benchmark stack), a few tube pieces (PrimaLuna, Tavish Design, Rogue), Class A amplification (Pass Labs XA-30.8) and a completely active Genelec 8351b based system. I seem to be slowly but surely gravitating towards subjectively great sounding gear, regardless of how they measure - the Totems are a case in point. However, I don’t want to find that I have moved too far in any one direction. At the end of the day, I value realism and emotional connection more than the ability to deconstruct the music but I don’t want to listen to a sloppy system that homogenizes everything. I’m sure this is all clear as mud! It is however, a reflection of where I am at the end of 28 years of being on this hamster wheel. All thoughts and suggestions welcome. Thanks in advance.

Ag insider logo xs@2xsrama

In practice the 6SN7s of the line stage hold up quite well- we rarely replace them in warranty (which is a year on tubes).

@atmasphere, Thank you, that is good to know.

To reference @avanti1960’s post above, I assume there will be sufficient gain between the MP-3 and the Class D to power my speakers (Totem Acoustic Forest Signatures)? I certainly don't want to end up with restrained dynamics or the sense that the music is somehow being strangled.

 

 

@srama The MP-3 has no problem driving the class D to clipping, if that's what you mean. It supports +4dBm which is far more Voltage than most power amps need.

The MP-3 has no problem driving the class D to clipping, if that's what you mean. It supports +4dBm which is far more Voltage than most power amps need.

Thank you, that's all I needed to know!

I second the Audio GD HE-1 XLR....10 tubes...it’s own regenerative power supply to optimize the current from the wall plug...nothing under 10K can touch it for soundstage....musicality...life like imaging and just plain sweet with my Class D Amps. Aavik and Peachtree. Call wally @ underwood hi-fi. $4500...a steal in Hi End!

@atmasphere, I just realized that the MP-3 comes with ONLY balanced inputs. My external phono stage only has single ended outputs - can I use a simple rca to xlr cable or do I have to select the version with optional single ended inputs?

Also, does the preamp support connection of a subwoofer through one of its outputs?