There are some very nice options to choose from on the OTL amp market these days. Atma-Sphere, Berning, Joule Electra, and Transcendent Sound to name a few. All of which are very reliable. It's rumored Roger Modjeski at Music Reference is working on a new OTL design. In addition, there are some great speakers that are OTL friendly, including Merlin (Bobby P. uses a Joule Electra set-up at the audio shows), Zu, Audiokinesis (Duke uses Atma-Sphere at the audio shows), Classic Audio, and Tonian Labs.
I myself own an Atma-Sphere S-30 that I use with my Audio Kinesis Jazz Module speakers. The S-30 was actually used to voice the speakers. I also own a Berning Micro ZOTL which although 1 watt, can drive my Tonian Lab TL-D1 speakers nicely in my small room.
I myself own an Atma-Sphere S-30 that I use with my Audio Kinesis Jazz Module speakers. The S-30 was actually used to voice the speakers. I also own a Berning Micro ZOTL which although 1 watt, can drive my Tonian Lab TL-D1 speakers nicely in my small room.