The Yamaha PB-1 is a professional rackmount bass preamplifier from the early 1980s, prized for its transparent tone, musical EQ section, and exceptional build quality. It was designed to serve both studio and live bassists seeking a clean and flexible front end.
Type
Bass Preamplifier (Rackmount)
Model
PB-1
Manufacturer
Yamaha
Country of Manufacture
Japan
Year of Introduction
1982
Controls
Front-panel knobs for Input Level, Master Volume, and a five-band semi-parametric EQ (with controls for Bass, Low Mid, High Mid, Treble, and Presence), plus switches for EQ in/out and Bright mode.
Input
¼″ instrument input on front panel.
Output
¼″ main line output, balanced XLR output, effects send and return, tuner output.
Notable Features
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Studio-grade low-noise circuitry with wide dynamic range
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Five-band semi-parametric EQ allowing precise tonal shaping
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Bright switch for high-frequency enhancement
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Effects loop and dedicated tuner out for flexible routing
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Clean, punchy tone highly regarded by bassists and engineers alike
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Rugged 1U rackmount chassis built to Yamaha’s professional standards