Pre-Amps
- Model 38 <> Magnetic Tape Preamplifier Equalizer <> 3-12mH Tapeheads, +24V, EQ
- Model 365P <> Magnetic Tape Preamplifier Equalizer <> 3-12mH Tapeheads, ±24V, EQ
- Model 365PE <> Magnetic Tape Preamplifier Equalizer <> 3-12mH Tapeheads, ±24V, EQ, Transformerless
- Model 380 <> Magnetic Tape Preamplifier Equalizer <> 200mH-1H Tapeheads, ±24V, EQ
- Model 35 <> Mic or Solar-cell Preamplifier <> +12v to +24v
- Model 36 <> Mic or Solar-cell Preamplifier <> Input Transranformer, +12v to +24v
- Model 350P <> Mic or Solar-cell Preamplifier <> M.P. Projector
- Model 360BM <> Mic Preamplifier <> LOW Noise (-128dbm), Input Transformer
- Model 360M <> Mic Preamplifier <> +22dbm Output, Input Transsformer
- Model 360P <> Mic Preamplifier <> LOW Noise (-125dbm), Input Transformer
- Model EMA <> Electret Microphone Preamplifier <> 60 db Gain
- Model M9C <> Mic/Line Utility Box
- Model M12V <> Mic Preamplifier <> Small-size, +12v, 60db gain
- Model M35B <> Mic Preamplifier <> 9v Battery-Operated
- Model 33 <> Phonograph Disc Pre-Amp RIAA Equalizer - +12v to +24v - for Variable Reluctance Cartridge
- Model 370 <> Phonograph Disc Pre-Amp RIAA Equalizer - ±12v to ±24v - for Variable Reluctance Cartridge
- Model 35 <> Solar-cell / Microphone Preamplifier <> +12v to +24v
- Model 350P <> Solar-cell / Microphone Preamplifier <> M.P. Projector