Amplified Music Products AMP BH-420

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Pros know! Late 80s A.M.P. BH-420 420-watt Bass Head!

The AMP BH-420 is a high-powered rackmount bass amplifier from the late 1980s–early 1990s, known for its clean headroom, studio-style EQ, and professional touring-grade build.

Type
Bass amplifier head

Model
BH-420

Manufacturer
Amplified Music Products (AMP)

Country of Manufacture
USA

Era
Late 1980s–early 1990s

Year of Introduction
Late 1980s

Controls
Gain, Limiter, Enhance, Bass, Treble, semi-parametric EQ bands (multiple frequency and level controls), Tone Balance, Volume, Crossover

Input
2 × 1/4" inputs (Hi/Lo gain), 1 × 1/4" front panel input

Output
Speaker outputs (rear), Direct out

Power Supply
Internal mains power

Wattage
420 watts

Notable Features
Made in USA professional rack unit, semi-parametric multi-band EQ for precise tone shaping, built-in limiter and crossover controls, strong clean power ideal for bass rigs and bi-amping setups, part of AMP’s high-end pre-Gallien-Krueger legacy designs, robust metal chassis designed for touring use

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