Fostex / AP25 Power Amplifier

The Fostex AP series of personal amplifiers now includes the new AP25, the top-of-the-line model equipped with a 25W x 25W digital amplifier! Its high-quality design, utilizing audio-specific components throughout, delivers clear and superior sound. Recommended for those who want to enjoy everyday listening and movies/videos in a higher-quality environment.

■Power Amplifier

■25W x 2 (4Ω), 17W x 2 (8Ω)

This is a compact personal amplifier equipped with a 25W + 25W digital amplifier.

Through a high-quality design incorporating audio-specific components to enhance sound quality, it achieves a clear and superior sound befitting the top-of-the-line model in the ""AP Series.""

■Main Features

・High-performance digital amplifier with a maximum output of 25W + 25W, operational amplifiers, and other carefully selected high-quality audio-specific components are used throughout to achieve a clear and superior sound.

・Equipped with pre-out output terminals, allowing for system expansion by connecting active subwoofers, power amplifiers, etc.

・The output terminals for passive speakers use gold-plated terminals compatible with banana plugs.

・Features a compact size (width 133mm, height 42mm, depth 165mm) that matches various settings.


This unit features an auto-standby function compliant with the European Ecodesign Directive for Environmentally Friendly Deployment Design. If the input to this unit remains silent or at a near-silent signal level for an extended period, it automatically switches to standby mode, reducing power consumption to less than 0.5W. Furthermore, this function can be turned ON/OFF and the standby time (1 minute or 12 minutes) can be set using the DIP switches on the bottom of the unit, depending on the operating environment and application.


■Main Specifications

Maximum Output: 25 W + 25 W (4Ω load), 17 W + 17 W (8Ω load)

Suitable Load Impedance: 4 Ω to 8 Ω

Frequency Response: 20 Hz to 20 kHz

Total Harmonic Distortion: 0.01% or less (3W output, 8Ω load, 1 kHz)

S/N Ratio: 100dB or higher

Input Terminal: RCA (1 system) / Input Sensitivity: 300 mV

Output Terminal (PRE OUT): RCA (1 system)

Power Supply: DC 20V (dedicated AC adapter included)

Power Consumption: 68W (maximum), 0.5 W or less (standby)

Dimensions: 133mm (W) x 42mm (H) x 165mm (D) *Including maximum protrusions

Weight: 750g

Accessories: AC adapter × 1. Speaker cable (1.5m) x 2, Stereo RCA cable (1.5m) x 1