preamplifier

Weak signal strengthener

A preamplifier is an electronic device that boosts a weak signal before it reaches the main amplifier.

In audio systems, a preamp strengthens the signal from a turntable, microphone, or instrument pickup to a level the power amplifier can work with: The guitar's signal runs through a preamp before hitting the amp.

Often shortened to preamp.

signal

gain

Positive return received

noise · distortion · bandwidth · feedback · attenuation · signal-to-noise · headroom · clipping · saturation · dynamic range

components

transistor

Semiconductor signal switch

  • capacitorCharge-storing circuit element
  • resistorCurrent-limiting circuit element
  • tubeHollow cylindrical passage

circuit · potentiometer · input · output · selector · attenuator · filter · knob · chassis · jack

audio

phono

Record player, informally

power amp · DAC · tape loop · tone control · equalizer · stereo · channel · aux · source · monitor

fidelity

transparency

State of being see-through

neutrality · soundstage · imaging · detail · resolution · musicality · timbre · articulation · presence · depth

types

solid-state

Using semiconductors, not tubes

portable · battery-powered · standalone · built-in

Categories
Opposites
signal chain position

preamplifierpower amplifier

Circuit that increases signal strength

amplifier · amp

signal processing function

preamplifierattenuator

Signal-reducing device

pad

Family

preamplifiers

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G