beautifully made stereo amps by swiss manufacturer nagra known for its movie soundtrack recorders. with 60w per channel into 8 ohms output or the two channels can be parallel-bridged to reach a double mono output power of 120 watts RMS into 4 ohms. approximate cost $15,000. personally for that price i’d go for  the pass aleph mono blocks but this deserves a post just for its looks. by dd