【MOREL MPS 1.550｜Mono Power Amplifier for Subwoofers】

Even after adding a subwoofer, if you feel like, “I want the bass to go a little deeper” or “when I turn the volume up, the bass gets blurry,” then choosing the right amplifier is important. MOREL MPS 1.550 is a mono power amplifier designed to drive a subwoofer firmly. It’s not just about adding more quantity—it's suited to shaping bass thickness and punch, taking into account how it blends with the front speakers.

With an efficient Class D design and power output of 350W RMS at 4Ω and 550W RMS at 2Ω, it’s a configuration that makes it easier to bring out the subwoofer’s performance. When listening to music, you’ll find it easier to perceive the contour of the kick drum and the movement of the bass, and you’ll get a natural sense of thickness throughout the cabin even without turning the volume up. This is an amplifier for those who want the bass to work as a foundation that supports vocals and instrument sounds—not just sit in the foreground.

Equipped with a variable low-pass filter from 40 to 220Hz, a bass boost adjustable at 45Hz, and a subsonic filter, it can handle tuning according to the subwoofer you pair it with and the vehicle cabin. The use of a balanced differential input—helpful when combining with OEM audio—is also a reassuring point when upgrading your system.

The unit measures 51mm in height, 170mm in width, and 214.5mm in depth, making it relatively compact. It’s a size that’s easy to install even in limited spaces, but the final result will vary depending on the mounting position, power wiring, and how you pair it with the subwoofer. Even with the same amplifier, the impression changes depending on where and how it’s installed and how it’s adjusted.

At Log On, we consider—together with you—an approach that avoids over-emphasizing the bass too much, while confirming your vehicle model, your OEM audio setup, the type of subwoofer, and the music you usually listen to and your preferences. If you want to add bass but want to avoid making the sound noisy inside the car, please consult us while looking at your actual system as a whole. If I were doing it, I would not just finish it with the subwoofer alone—I’d verify the integration with the front speakers as well.

Main Specifications / Specs

【Basic Information】
Product name: MPS 1.550
Brand: MOREL
Type: Mono power amplifier for subwoofers
Design: Class D

【Output】
Rated output: 350W RMS (4Ω)
Rated output: 550W RMS (2Ω)

【Performance】
S/N ratio: 100dB
THD: 0.15%

【Adjustment Functions】
Low-pass filter: Variable 40–220Hz
Bass boost: 0 to +12dB (45Hz)
Subsonic filter: OFF / 25Hz / 35Hz

【Input】
Balanced differential input

【Dimensions】
Height: 51mm
Width: 170mm
Depth: 214.5mm