Benchmark AHB2 compared to Rogue Atlas Magnum III


Very different amps.  Paired with Revels F208, and a Benchmark DAC3, do you thing there will be a difference in the sound?  I am unsure if the F208's can reveal the differences.  If there were to be a difference with these speakers or an upgraded speaker, what might the differences sound like, or maybe not much difference between two great amps?  Thanks.  I have never owned a tube amp.  I have listened to this Rogue amp on different speakers though.  

12many

Showing 2 responses by asctim

It's not just a matter of the speaker being good enough to reveal differences. It will have a lot to do with the impedance of the speaker at various frequencies, causing the tube amp to produce a slightly different frequency response. A good speaker with stable impedance will sound more similar between the two. A good speaker with bigger peaks and dips in impedance will be more revealing of their differences.

The only way to know for sure if you'll like one better than the other with your F208s is to give them both a try. 

@tvrgeek

My impression of these really well controlled, ultra low distortion amps is similar to yours. Stiff upper lipped is a great description. I’ve used the word "dry" in an attempt at a description of the effect, but they seem to have an iron fist on the speaker, minimizing its ability to express some character in its relationship to the amp. I’m sure it’s technically correct. I do like that sound in some ways but I think I’d need to design a speaker and setup a room around that as a starting point. The upside potential I’d bet is ultimately higher.

No really good speakers with stable impedance? Can you elaborate on that further?

And yes! There is a struggle between perfection that brings out the best in the best recordings vs. a forgiving sloppiness that doesn’t fully reveal the best but is graceful with less than the best. What to do? It’d be nice if you could just flip a switch or turn a knob on your system to go from exacting to more forgiving. With my active crossovers and EQ I can sort of do that. I’ve found that a really flat and extended response sounds great with some good recordings, but on most stuff sounds too edgy and bright. I need more downward slope in the treble to get a forgiving but less airy and spacious sound. Also a tighter directivity with less room reflection is fantastic on some recordings, where others need some room reverb to soften, blur and sort of fatten up the sound. I think there’s more to it than just bad and good recordings, but different kind of recordings needing a different playback to sound their best.

About metal domes, I don’t have a clear opinion on it due to a lack of much experience, but so far my favorite speakers that didn’t use compression drivers had soft dome tweeters. What always amazes me about a soft dome doped silk tweeter is that it can make such detailed, shimmery metallic sounds when they’re in the recording. It’s hard to get my mind around how a slightly rubbery, tacky, soft thing can sound like that.