Thanks for the compliment. Sometimes it is tough to write accurately about equipment you like without veering into overt gushiness.
The sensitivity of the S8e is 89 dB. While not qualifying as a high-efficiency speaker, they do a pretty good job with any power that is fed them. If I found the right model, it looks like your Naim amp is 50 watts. I think that'll be fine with two caveats added. One is that you're not a true head-banger in terms of volume. (If you are, these are probably the wrong speaker for you regardless of amp power.) Second, it also assumes your listening room is not overly large.
My typical average volume for serious listening is usually not more than 85 dB or so. I think you amp would be fine at that level. The key (in my estimation) is whether you are hearing any clipping distortion when you listen. If you need to make a decision before you hear the combo, what is the efficiency of the speakers you're using right now with your Naim? If you're in the same range you should be OK with the Spendors as I haven't found them to be a difficult speaker to drive. (My prior amps were a pair of old 60 watt Dynaco MkIII tube monoblocks.)
As noted in my review above, I did find the S8e a bit pickier about placement than the S5e but still didn't think they were too hard to position. One thing about Spendors is they do have a relatively smallish sweet spot. This is probably due to the fact that crossover from the 8" driver is at 4 KHz. However, this can actually be an advantage in a particularly live room since there isn't quite as much reflection in the range of the upper primary frequencies where the ear is sensitive. The disadvantage is the sense of sound-stage fades quickly as you move out of the ideal listening position.
I find they image very nicely for me, but I will preface that by stating I'm not a imaging freak. I do not require my speakers to have more accurate imaging than what I hear at live venues. Some people are particularly taken by super precise imaging and there are probably other speakers that do that better. However, I find the Spendors are just a beautifully balanced mix of musical characteristics. A great, very accurate midrange tone balance, smooth highs without the tizziness that is popular with some, solid bass, natural transient response, and a realistic sound-stage that doesn't "wander." Best of all for me is that they are more free from listener fatigue than any other speaker I've heard in that price range.
In short, if your goal is to enjoyably listen to lots of music they are simply a great choice.
The sensitivity of the S8e is 89 dB. While not qualifying as a high-efficiency speaker, they do a pretty good job with any power that is fed them. If I found the right model, it looks like your Naim amp is 50 watts. I think that'll be fine with two caveats added. One is that you're not a true head-banger in terms of volume. (If you are, these are probably the wrong speaker for you regardless of amp power.) Second, it also assumes your listening room is not overly large.
My typical average volume for serious listening is usually not more than 85 dB or so. I think you amp would be fine at that level. The key (in my estimation) is whether you are hearing any clipping distortion when you listen. If you need to make a decision before you hear the combo, what is the efficiency of the speakers you're using right now with your Naim? If you're in the same range you should be OK with the Spendors as I haven't found them to be a difficult speaker to drive. (My prior amps were a pair of old 60 watt Dynaco MkIII tube monoblocks.)
As noted in my review above, I did find the S8e a bit pickier about placement than the S5e but still didn't think they were too hard to position. One thing about Spendors is they do have a relatively smallish sweet spot. This is probably due to the fact that crossover from the 8" driver is at 4 KHz. However, this can actually be an advantage in a particularly live room since there isn't quite as much reflection in the range of the upper primary frequencies where the ear is sensitive. The disadvantage is the sense of sound-stage fades quickly as you move out of the ideal listening position.
I find they image very nicely for me, but I will preface that by stating I'm not a imaging freak. I do not require my speakers to have more accurate imaging than what I hear at live venues. Some people are particularly taken by super precise imaging and there are probably other speakers that do that better. However, I find the Spendors are just a beautifully balanced mix of musical characteristics. A great, very accurate midrange tone balance, smooth highs without the tizziness that is popular with some, solid bass, natural transient response, and a realistic sound-stage that doesn't "wander." Best of all for me is that they are more free from listener fatigue than any other speaker I've heard in that price range.
In short, if your goal is to enjoyably listen to lots of music they are simply a great choice.