It sounds to me like there may be a couple of issues at play here.
I looked up your product specs on the web, and the Totems are nominally 4 ohm speakers. It is possible that they may have some serious dips at some frequencies. Given that the Kora is rated from 3 ohms to 12 ohms for full power, there could be a potential problem with the amp handling the impedance curve.
Add to that, the Totem's rep for being a little power hungry at 87db efficiency, and it's entirely possible that it could be straining the Kora a little too much. According to my calculations, with the Totems, your amp will be maxed out at under 105db SPL. This means that 95db would be the highest average listening level with this combo, still leaving 10db for peaks before clipping. Add in the difficult impedance load, and you have some strong potential for problems, especially if you like to listen at louder volumes.
Many speakers that are rated at 4 ohms nominal swing below that at some points and are not particularly "tube friendly".
I would say that you are at a position where some changes will have to be made regarding the amp or speakers, to get a more favorable match.
Personally, with a 4 ohm nominal speaker rating, and 87db efficiency rating, I would have to recommend looking at some solid state amps with a rating of about 250-400 watts at 4 ohms. The efficiency levels and impedance curve virtually demand this, if you are going to maintain a decent damping factor, bass response, and 110db+ max peak SPL.
I am a tube guy, but I don't think that you are going to get any tube amp under $2k that is going to hang with these speakers.
I looked up your product specs on the web, and the Totems are nominally 4 ohm speakers. It is possible that they may have some serious dips at some frequencies. Given that the Kora is rated from 3 ohms to 12 ohms for full power, there could be a potential problem with the amp handling the impedance curve.
Add to that, the Totem's rep for being a little power hungry at 87db efficiency, and it's entirely possible that it could be straining the Kora a little too much. According to my calculations, with the Totems, your amp will be maxed out at under 105db SPL. This means that 95db would be the highest average listening level with this combo, still leaving 10db for peaks before clipping. Add in the difficult impedance load, and you have some strong potential for problems, especially if you like to listen at louder volumes.
Many speakers that are rated at 4 ohms nominal swing below that at some points and are not particularly "tube friendly".
I would say that you are at a position where some changes will have to be made regarding the amp or speakers, to get a more favorable match.
Personally, with a 4 ohm nominal speaker rating, and 87db efficiency rating, I would have to recommend looking at some solid state amps with a rating of about 250-400 watts at 4 ohms. The efficiency levels and impedance curve virtually demand this, if you are going to maintain a decent damping factor, bass response, and 110db+ max peak SPL.
I am a tube guy, but I don't think that you are going to get any tube amp under $2k that is going to hang with these speakers.