OTL amps


I would like your opinions on OTL amps vs those with transformers.
merle

Showing 2 responses by oahuan

I have Joule Electra OTL monoblocks, and I agree with Glide 3 that the performance is somewhat speaker dependent but on suitable speakers, the performance is stunning. I am unfamiliar with the Kharma speakers, but basically, OTLs work best on speakers with higher and relatively stable input impedance loads (definitely above 4 ohms and preferably in the 8 ohm and above range). As for specifics about the sound? My experience is that the OTLs have an extra special "purity" and "clean-ness" that on well-recorded material really makes one appreciate how beautiful music can be. Can other amps of different but well-executed design do as well? They're so many good ones out there that the answer probably has to be "yes." I've just not heard them, so for now, it's the extraordinary purity of OTLs that makes the difference to me.
Merle - Just in case you do have an opportunity to demo (which probably can be arranged through Jed Barber of Joule, if there is no dealer in your area), let me add that from the other posts, the Joule OTLs may indeed be a possibility for use with your Kharma speakers. I use them with Merlin VSM-SEs, the speakers Joule Electra is most often associated with, and the nominal impedance of the Merlins is 6.8 ohms. If your Kharma speakers are basically 6 ohms and fairly stable (i.e., don't drop way down at some point in the frequency spectrum), the Joules will work fine. All the amps mentioned have great reputations. However, if you are curious about OTLs, you should try to give them a listen. Their magic is not at all limited to the mid-range. On the other hand what I hear and love about my OTLs may or may not strike your fancy as much. At the level of all the amps being commented upon, "taste" probably counts more than anything.