i might recommend the Atmasphere line as one of the the best and most stable OTLs with dynamic speakers. the M-60, MA-1, and MA-2 are all solid and excellent performing.
i used the MA-2 MKII.2 to good result on the very difficult to drive Wilson Watt/Puppy 6s. many less powerfull atmasphere amps are used with numerous dynamic speakers.
personally i own and also recommend Tenor Audio 75Wi monoblocks, an integrated OTL amplifier that i prefer if your speakers are a stable load and 90db or better efficient.
www.atmasphere.com / www.tenoraudio.com
i used the MA-2 MKII.2 to good result on the very difficult to drive Wilson Watt/Puppy 6s. many less powerfull atmasphere amps are used with numerous dynamic speakers.
personally i own and also recommend Tenor Audio 75Wi monoblocks, an integrated OTL amplifier that i prefer if your speakers are a stable load and 90db or better efficient.
www.atmasphere.com / www.tenoraudio.com