Description
Vintage Tube Preamplifier Nortronics RA-100 Microphone/Tape Playback. Got this to make a tube mic pre, but never did. Too many projects. Untested. Power cord is frayed. For parts only. No returns. NORTRONICS This made in Minneapolis Mn. USA Nortronics Model PL-100 is an AC operated audio amplifier using 4 Tubes: 12AX7 12AX7 12BH7A 6X4 for tape playback and microphone. Nortronics made tape heads and transformers for Ampex.