HiFi preamplifers ( 1) :

• Hi-Fi Preamplifier   

Phono preamplifiers ( 5 ) :

• Phono Preamp - tube design   
• Phono Preamps For All - a collection of phono preamps and equalisation circuits, one of which is sure to meet your requirements   
• QSX Mark II - The extreme phono (RIAA) amplifier   
• RIAA Compensated Stereo Preamp -   
• Three High Accuracy, RIAA/IEC, MC and MM Phono Pre-Amplifiers   

Other preamplifiers ( 2 ) :

• Pre-Amp Head Cassette dengan LM 387   
• The ampage schematic collection - guitar and bass preamplifiers   

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