New Release! Audiofrog A150.4D

July 30, 2022

Audiofrog designed and built this amplifier using high-tech component applications and circuit design, so you get high power and high fidelity performance from a small rugged amp that'll fit almost anywhere in your car.

The Class D power-switching, modulation, and error correction circuitry all use high-frequency control signalling.

That allows smaller-than-usual electronic components to safely handle the signal — and lets Audiofrog create such a powerful amp that's so small.

A 4-layer circuit board and a dual-purpose heat sink shield both help eliminate noisy electromagnetic interference. Differential inputs also help keep out noise.

Power Output @ 4 Ω: 100 Watts x 4 Channels
Power Output @ 2 Ω: 150 Watts x 4 Channels
Power Output @ 4 Ω: 300 Watts x 2 Channels

THD @ Rated Power: 0.1%
THD @ 20% of Rated Power: 0.05%

Signal to Noise Ratio @ 1 Watt: 80 dB
Signal to Noise Ratio @ Rated Power: 102dB

Frequency Response (=/- 1dB): 10 Hz –  45 kHz

Damping Factor @ 4 Ω: >600

Input Type: Differential
Input Sensitivity (Line Level Inputs): 0.5 Vp – 10 Vp
Maximum Input Voltage (Speaker Level Inputs): 30 Vp
Input Impedance (Line Level Inputs): 10 kΩ
Input Impedance (Speaker Level Inputs): 1.2 kΩ

Turn On Modes: Signal Sense, 6 V Offset Detect, Remote Turn On
Signal Sensing Turn On Threshold (Line Level Inputs): 45 mVp
Signal Sensing Turn ON Threshold (Speaker Level Inputs): 800 mVp

Crossover Filter Slope: 12 dB/Oct
Crossover Filter Type: Bandpass, Highpass, None
Crossover Frequency Ranges: HP: 20 Hz – 400 Hz, 200 Hz – 4 kHz; LP: 50 Hz – 500 Hz, 500 Hz – 5 kHz

Quiescent Current Draw: 0.9 A
Maximum Current Draw: 60 A
Required Power Line Fuse: 60 A

Dimensions: 210 mm x 126mm X 32 mm (8-17/64” x 4-61/64” x 1-17/64”)

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