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Compact black metal amplifier with silver front panel controls and rear binding posts

Dayton Audio

Dayton Audio APA150 150W Pro Sound Amplifier

SKU CH-KSDG-W3PS1

A Class A/B stereo amplifier delivering 75 watts per channel into 4 ohms with a toroidal transformer, adjustable low-pass filter and auto-on sensing

  • TypeAmplifiers
  • High current discrete transistors deliver clean power
  • Toroidal transformer provides stable energy for 150W output
  • Adjustable 50-150 Hz low-pass filter at 18 dB/octave
  • Auto-on/off with silent turn-off prevents audible transients
  • Gold plated RCA and 5-way binding posts ensure secure connections

Pro Sound Stereo Amplifier

The Dayton Audio APA150 delivers 75 watts RMS per channel into 4 ohms with less than 0.01% THD. Its Class A/B topology and discrete power transistors provide high-current performance for home audio and pro sound applications. A hefty toroidal transformer supports stable power delivery across demanding loads.

Low-Pass Filter and Daisy-Chain Capability

A fully adjustable and defeatable 50-150 Hz low-pass filter at 18 dB/octave allows precise subwoofer integration without external crossovers. Gold-plated RCA line-level outputs enable daisy-chaining multiple APA150 units for expanded multi-room or multi-zone systems. Auto-on sensitivity at 3 mV ensures reliable triggering from any source.

Compact Chassis with Flexible Connectivity

The unit measures 5.6'' H x 5.7'' W x 12.8'' D and operates on 120/230 VAC at 50/60 Hz for global compatibility. Five-way binding posts accept bare wire, spades or banana plugs for secure speaker connections. Low-noise forced-air cooling maintains thermal stability during extended high-output sessions. Not suited for buyers who need built-in wireless streaming or multi-channel surround decoding.

Highlights

  • High current discrete transistors deliver clean power
  • Toroidal transformer provides stable energy for 150W output
  • Adjustable 50-150 Hz low-pass filter at 18 dB/octave
  • Auto-on/off with silent turn-off prevents audible transients
  • Gold plated RCA and 5-way binding posts ensure secure connections

Specifications

TypeAmplifiers

Questions about this item

How much clearance does the 5.6'' high by 12.8'' deep chassis need for the forced-air cooling vents?

Allow at least a few centimetres above and behind the unit so the low-noise forced-air fan can exhaust heat without restriction.

Which binding-post step do installers most often skip when wiring speakers?

Many forget to strip roughly 1/2'' of insulation and fully tighten the 5-way posts, leaving a loose connection that can cause intermittent sound.

When should the internal protection circuitry be expected to activate during normal use?

The thermal-overload and short-circuit safeguards only engage if the amplifier runs excessively hot or a speaker wire shorts; they do not trip under typical listening levels.

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