My Stereo Vacuum tube audio equipment is still around. Here is a photo of the amplifiers and preamp I built: The middle unit is the preamp, and the two identical units are the left and right amplifiers. Here's the preamp before assembly: Here are the amplifiers ...
audiocostruzioni.com
Hornlautsprecher, von Robert Busch
6moons audio reviews: Atelier Audio First Horn
Buschhorn MK II | buschhorn, do it yourself | hifi-forum.de Bildergalerie
Buschhorn MK2 mir Fostex FE127en, Selbstbau / DIY - HIFI-FORUM
Buschhorn MK II | Hörner
Walter Fröhlich - SPEAKER Vertrieb - Distribution von Softwaretools zur Lautsprecherentwicklung - Das Buschhorn Mk3 mit Monacor SPH-135/AD + Vifa 9BGS119/8
Walter Fröhlich - SPEAKER Vertrieb - Distribution von Softwaretools zur Lautsprecherentwicklung - Das Buschhorn Mk3 mit Monacor SPH-135/AD + Vifa 9BGS119/8